0000950170-24-063523 | 10-K | XBRL Viewer

Print Document

Schedule of Property, Plant and Equipment Estimated Useful Lives (Detail)	Mar. 31, 2024
Minimum [Member] \| Plants [Member]
Property, Plant and Equipment [Line Items]
Estimated lives of assets - (years)	20 years
Minimum [Member] \| Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated lives of assets - (years)	20 years
Minimum [Member] \| Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated lives of assets - (years)	3 years
Maximum [Member] \| Plants [Member]
Property, Plant and Equipment [Line Items]
Estimated lives of assets - (years)	30 years
Maximum [Member] \| Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated lives of assets - (years)	40 years
Maximum [Member] \| Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated lives of assets - (years)	25 years

Indebtedness - Long-Term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023	Jul. 01, 2021
Debt Instrument [Line Items]
Revolving Credit Facility	$ 170,000	$ 157,000
Long-Term Debt, Gross, Total	1,102,500	1,099,500
Less: Current Portion of Long-term Debt	(10,000)	(10,000)
Less: Unamortized Discounts and Debt Issuance Costs	(9,201)	(10,468)
Long-term Debt	1,083,299	1,079,032
2.500% Senior Unsecured Notes Due 2031 [Member]
Debt Instrument [Line Items]
Long-Term Debt, Gross, Total	750,000	750,000	$ 750,000
Term Loan [Member]
Debt Instrument [Line Items]
Long-Term Debt, Gross, Total	$ 182,500	$ 192,500

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482900/835-30-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69C
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69E
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69E

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69F
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69F

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

+ Details

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value of Senior Notes

The fair value of our senior notes has been estimated based upon our current incremental borrowing rates for similar types of borrowing arrangements. The fair value of our Senior Unsecured Notes at March 31, 2024 is as follows:


	Fair Value
	(dollars in thousands)
2.500% Senior Unsecured Notes Due 2031	$	628,000

Schedule of Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Operating Leases:
Operating Lease Right-of-Use Assets	$ 19,373	$ 20,759
Current Operating Lease Liabilities	7,899	6,009
Noncurrent Operating Lease Liabilities	19,037	24,940
Total Operating Lease Liabilities	$ 26,936	$ 30,949

LEASES (Tables)

12 Months Ended

Mar. 31, 2024

Leases [Abstract]

Schedule of Lease Expense for Operating and Short-Term Leases

Lease expense for our operating and short-term leases is as follows:


	For the Years Ended March 31,
	2024		2023		2022
	(dollars in thousands)
Operating Lease Cost	$	8,030	$	7,339	$	6,543
Short-term Lease Cost		691		593		1,261
Total Lease Cost	$	8,721	$	7,932	$	7,804

Schedule of Balance Sheet Information Related to Leases

The Right-of-Use Assets and Lease Liabilities are reflected on our Balance Sheet as follows:


	March 31,
	2024		2023
	(dollars in thousands)
Operating Leases:
Operating Lease Right-of-Use Assets	$	19,373	$	20,759

Current Operating Lease Liabilities	$	7,899	$	6,009
Noncurrent Operating Lease Liabilities		19,037		24,940
Total Operating Lease Liabilities	$	26,936	$	30,949

Schedule of Future Payments for Operating Leases

Future payments for operating leases are as follows:


	Amount
Fiscal Year	(dollars in thousands)
2025	$	8,650
2026		4,785
2027		3,619
2028		2,752
2029		2,675
Thereafter		11,006
Total Lease Payments	$	33,487
Less: Imputed Interest		(6,551	)
Present Value of Lease Liabilities	$	26,936

Weighted-Average Remaining Lease Term (in years)		9.6
Weighted-Average Discount Rate		4.16	%

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Beginning balance at Mar. 31, 2021	$ 1,358,990	$ 424	$ 62,497	$ 1,299,509	$ (3,440)
Net Income (Loss)	374,247			374,247
Stock Option Exercises and Restricted Share Vesting	21,366	3	21,363
Stock Compensation Expense	14,264		14,264
Shares Redeemed to Settle Employee Taxes	(5,308)		(5,308)
Purchase and Retirement of Common Stock	(589,742)	(40)	(92,816)	(496,886)
Dividends to Stockholders	(40,526)			(40,526)
Unfunded Pension Liability, net of tax	265				265
Ending Balance at Mar. 31, 2022	1,133,556	387		1,136,344	(3,175)
Net Income (Loss)	461,540			461,540
Stock Option Exercises and Restricted Share Vesting	5,418	2	5,416
Stock Compensation Expense	17,155		17,155
Shares Redeemed to Settle Employee Taxes	(6,108)		(6,108)
Purchase and Retirement of Common Stock	(388,455)	(31)	(16,463)	(371,961)
Dividends to Stockholders	(37,040)			(37,040)
Unfunded Pension Liability, net of tax	(372)				(372)
Ending Balance at Mar. 31, 2023	1,185,694	358		1,188,883	(3,547)
Net Income (Loss)	477,639			477,639
Stock Option Exercises and Restricted Share Vesting	17,098	2	17,096
Stock Compensation Expense	19,900		19,900
Shares Redeemed to Settle Employee Taxes	(10,423)	(1)	(10,422)
Purchase and Retirement of Common Stock	(346,706)	(18)	$ (26,574)	(320,114)
Dividends to Stockholders	(34,841)			(34,841)
Unfunded Pension Liability, net of tax	174				174
Ending Balance at Mar. 31, 2024	$ 1,308,535	$ 341		$ 1,311,567	$ (3,373)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482765/220-10-50-6

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480175/815-40-65-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-8

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-9

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-11

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-11

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-4

Reference 13: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480167/946-830-55-10

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483581/946-220-45-7

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(18))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(9))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(1)(d))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-3

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 60B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-60B

Reference 32: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 33: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 34: http://www.xbrl.org/2003/role/disclosureRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483499/205-20-50-7

Reference 35: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-1A

Reference 37: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-1B

Reference 38: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(20))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2

Reference 39: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(22))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1

+ Details

- Definition

Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480167/946-830-55-12

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(19))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.6-05(4))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479617/946-210-S99-2

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(4)(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(6))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-3

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(7))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-3

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 11: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(31))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 13: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 14: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 4.E)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480418/310-10-S99-2

+ Details

Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Cash Payments:
Interest	$ 43,663	$ 31,596	$ 21,298
Income Taxes	124,482	131,512	86,407
Operating Cash Flows Used for Operating Leases	9,286	8,314	8,141
Noncash Financing Activities:
Right-of-use Assets Obtained for Capitalized Operating Lease	6,465	1,711	2,598
Excise Tax on Share Repurchases	$ 3,432	$ 738	$ 0

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ 477,639	$ 461,540	$ 374,247

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Summary of Activity for Nonvested Restricted Shares (Detail) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Nonvested Restricted Stock at Beginning of Year	219,084	258,779	267,090
Number of Shares, Granted	97,257	111,230	113,414
Number of Shares, Vested	(111,695)	(147,678)	(116,507)
Number of Shares, Cancelled	(3,000)	(3,247)	(5,218)
Number of Shares, Nonvested Restricted Stock at End of Year	201,646	219,084	258,779
Weighted Average Grant Date Fair Value, Nonvested Restricted Stock at Beginning of Year	$ 96.54	$ 85.34	$ 62.56
Weighted Average Grant Date Fair Value, Granted	169.62	126.23	139.91
Weighted Average Grant Date Fair Value, Vested	124.78	104.33	87.47
Weighted Average Grant Date Fair Value, Cancelled	30.38	124.82	75.1
Weighted Average Grant Date Fair Value, Nonvested Restricted Stock at End of Year	$ 122.58	$ 96.54	$ 85.34

Business Segments - Summarized Financial Information for Joint Venture Unconsolidated (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Related Party Transaction [Line Items]
Revenue	$ 2,259,297	$ 2,148,069	$ 1,861,522
Gross Margin	685,321	639,266	519,614
Earnings Before Income Taxes	617,937	588,593	$ 475,094
Current Assets	627,693	521,503
Current Liabilities	239,409	212,889
Joint Venture [Member] \| Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Related Party Transaction [Line Items]
Revenue	225,503	227,565
Gross Margin	71,077	77,673
Earnings Before Income Taxes	63,644	71,491
Current Assets	111,164	88,562
Noncurrent Assets	158,618	124,503
Current Liabilities	$ 27,994	$ 29,434

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (bb)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-25

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483467/210-10-45-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(9))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481404/852-10-50-7

+ Details

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (bb)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-25

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 17: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481404/852-10-50-7

+ Details

- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

+ Details

- Definition

Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-25

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (bb)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483467/210-10-45-5

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 19: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481404/852-10-50-7

Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481404/852-10-50-7

Reference 21: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.21)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479941/924-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-40

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-41

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-4

+ Details

Net Interest Expense, Net (Detail) - USD ($) $ in Thousands	12 Months Ended
Net Interest Expense, Net (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Interest Income (Expense), Net [Abstract]
Interest Income	$ (1,043)	$ (421)	$ (39)
Interest Expense	41,403	33,706	21,637
Other Expenses	1,897	1,886	9,275
Interest Expense, net	$ 42,257	$ 35,171	$ 30,873

- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

+ References + Details

ACQUISITION (Tables)

12 Months Ended

Mar. 31, 2024

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The following table summarizes the allocation of the Purchase Price to assets acquired and liabilities assumed:


	(dollars in thousands)
Inventory	$	14,809
Prepaid and Other Assets		179
Property, Plant, and Equipment		12,737
Lease Right-of-Use Assets		1,646
Intangible Assets		16,100
Lease Obligations		(1,646	)
Other Long-term Liabilities		(630	)
Goodwill		11,858
Total Purchase Price	$	55,053

Schedule of Revenue and Operating Earnings Related to Business Acquisition

The following table presents the Revenue and Operating Earnings related to the Stockton Terminal Acquisition that have been included in our Consolidated Statement of Earnings from May 3, 2023 through March 31, 2024.


	For the Year Ended March 31,
	2024
	(dollars in thousands)
Revenue	$	39,345
Operating Earnings	$	(2,420	)

Schedule of Lease Expense for Operating and Short-Term Leases (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Leases [Abstract]
Operating Lease Cost	$ 8,030	$ 7,339	$ 6,543
Short-term Lease Cost	691	593	1,261
Total Lease Cost	$ 8,721	$ 7,932	$ 7,804

Leases - Additional Information (Detail)	Mar. 31, 2024
Minimum [Member]
Lessee Lease Description [Line Items]
Operating lease term	1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Operating lease term	20 years

Income Taxes - Schedule of Effective Tax Rates Vary from Federal Statutory Rates (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Earnings Before Income Taxes	$ 617,937	$ 588,593	$ 475,094
Income Taxes at Statutory Rate	129,766	123,605	99,770
State Income Taxes, net	18,172	16,821	12,743
Statutory Depletion in Excess of Cost	(9,883)	(8,253)	(7,796)
Excess Tax Benefit from Stock Compensation	(5,417)	(1,593)	(3,048)
Meals and Entertainment Disallowance	524	484	279
Limitation on Officers' Compensation	6,513	3,009	2,568
Valuation Allowance	500	(7,205)	(4,556)
Other	123	185	887
Provision for Income Taxes	$ 140,298	$ 127,053	$ 100,847
Effective Tax Rate	23.00%	22.00%	21.00%

Income Taxes - Reconciliation of Consolidated Liability for Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Balance at Beginning of Year	$ 1,284	$ 1,284	$ 1,284
Increase Related to Current Tax Positions	0	0	0
Decrease Related to Current Tax Positions	0	0	0
Payments	0	0	0
Balance at End of Year	$ 1,284	$ 1,284	$ 1,284

PROPERTY, PLANT AND EQUIPMENT

12 Months Ended

Mar. 31, 2024

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPMENT

Cost by major category and Accumulated Depreciation are summarized as follows:


	March 31,
	2024			2023
	(dollars in thousands)
Land and Quarries	$	330,874		$	311,743
Plants		2,501,627			2,423,426
Buildings, Machinery, and Equipment		264,180			226,018
Construction in Progress		68,136			65,455
		3,164,817			3,026,642
Accumulated Depreciation		(1,488,600	)		(1,364,581	)
	$	1,676,217		$	1,662,061

Pension and Profit Sharing Plans - Schedule of Pension Plans Weighted-Average Asset Allocation and Range of Target Allocation (Detail)	Mar. 31, 2024	Mar. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at March 31	100.00%	100.00%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at March 31	0.00%	9.00%
Equity Securities [Member] \| Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Range of Target Allocation	10.00%
Equity Securities [Member] \| Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Range of Target Allocation	20.00%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at March 31	98.00%	89.00%
Debt Securities [Member] \| Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Range of Target Allocation	60.00%
Debt Securities [Member] \| Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Range of Target Allocation	90.00%
Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at March 31	2.00%	2.00%
Other [Member] \| Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Range of Target Allocation	0.00%
Other [Member] \| Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Range of Target Allocation	20.00%

Schedule of Earnings Per Share (Detail) - shares	12 Months Ended
Schedule of Earnings Per Share (Detail) - shares	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Weighted-Average Shares of Common Stock Outstanding	34,811,560	36,798,354	40,547,048
Assumed Exercise of Outstanding Dilutive Options	304,889	418,659	539,309
Less Shares Repurchased from Proceeds of Assumed Exercised Options	(157,457)	(290,590)	(343,917)
Restricted Stock Units	138,879	126,519	187,272
Weighted-Average Common Stock and Dilutive Securities Outstanding	35,097,871	37,052,942	40,929,712

- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of contingently issuable shares. Contingently issuable shares are those shares that are issuable for little or no cash contingent on certain conditions being met.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482662/260-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 23
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-23

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 26
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-26

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 44
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-44

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 51
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-51

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 52
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-52

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 53
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-53

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 54
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-54

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 48
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-48

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 48
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-48

+ Details

Pension and Profit Sharing Plans - Schedule of Reconciliation of Obligations and Fair Values of Plan Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Retirement Benefits [Abstract]
Benefit Obligation at April 1,	$ 29,189	$ 33,909
Interest Cost on Projected Benefit Obligation	1,413	1,240	$ 1,167
Actuarial Gain	(829)	(4,509)
Benefits Paid	(1,643)	(1,451)
Benefit Obligation at March 31,	28,130	29,189	33,909
Fair Value of Plan Assets at April 1,	31,106	36,313
Actual Return on Plan Assets	641	(3,756)
Employer Contributions	20	0
Benefits Paid	(1,643)	(1,451)
Fair Value of Plan Assets at March 31,	30,124	31,106	$ 36,313
Funded Status at March 31,	1,994	1,917
Other Assets	1,994	1,917
Accumulated Other Comprehensive Losses - Net Actuarial Loss	4,454	4,662
Accumulated Other Comprehensive Losses	4,454	4,662
Tax Impact	(1,081)	(1,115)
Accumulated Other Comprehensive Losses, net of tax	$ 3,373	$ 3,547

Fair Value of Financial Instruments (Detail) $ in Thousands	Mar. 31, 2024 USD ($)
2.500% Senior Unsecured Notes Due 2031 [Member]
Fair Value Of Financial Instruments [Line Items]
Fair Value of long term debt	$ 628,000

Business Segments - Financial Information Related to Operations by Segment (Detail) $ in Thousands	12 Months Ended
	Mar. 31, 2024 USD ($) kt	Mar. 31, 2023 USD ($) kt	Mar. 31, 2022 USD ($) kt
Segment Reporting Information [Line Items]
Revenue	$ 2,259,297	$ 2,148,069	$ 1,861,522
Operating Earnings	716,902	674,740	552,102
Corporate General and Administrative Expense	(59,795)	(53,630)	(46,801)
Loss on Early Retirement of Senior Notes	0	0	(8,407)
Other Nonoperating Income (Loss)	3,087	2,654	9,073
Earnings Before Interest and Income Taxes	660,194	623,764	505,967
Interest Expense, net	(42,257)	(35,171)	(30,873)
Earnings Before Income Taxes	617,937	588,593	475,094
Capital Expenditures	120,305	110,143	74,121
Depreciation, Depletion, and Amortization	149,832	138,554	128,811
Segment Assets	2,947,019	2,781,002	2,579,652
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	2,502,687	2,387,337	2,070,422
Depreciation, Depletion, and Amortization	149,832	138,554	128,811
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	(130,654)	(125,750)	(105,001)
Revenue	130,654	125,750	105,001
Consolidation, Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	(112,736)	(113,518)	(103,899)
Cement [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	$ 1,226,017	$ 1,074,070	$ 1,007,094
Cement Sales Volume \| kt	7,289	7,133	7,534
Operating Earnings	$ 338,349	$ 278,762	$ 259,556
Capital Expenditures	65,442	39,049	31,535
Depreciation, Depletion, and Amortization	89,138	81,643	79,560
Segment Assets	$ 2,042,499	$ 1,905,227	$ 1,860,649
Cement [Member] \| Operating Segments [Member] \| Wholly-Owned [Member]
Segment Reporting Information [Line Items]
Cement Sales Volume \| kt	6,610	6,399	6,711
Operating Earnings	$ 306,768	$ 243,288	$ 227,068
Cement [Member] \| Operating Segments [Member] \| Joint Venture [Member]
Segment Reporting Information [Line Items]
Cement Sales Volume \| kt	679	734	823
Operating Earnings	$ 31,581	$ 35,474	$ 32,488
Cement [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	35,363	32,915	22,915
Concrete and Aggregates [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	252,952	239,516	177,122
Operating Earnings	12,401	18,259	18,467
Capital Expenditures	15,103	35,503	5,239
Depreciation, Depletion, and Amortization	19,728	17,413	9,656
Segment Assets	225,485	234,767	89,405
Concrete and Aggregates [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	12,940	0	0
Gypsum Wallboard [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	839,530	872,471	692,152
Operating Earnings	334,536	352,499	261,476
Capital Expenditures	29,127	31,063	32,405
Depreciation, Depletion, and Amortization	23,038	21,744	22,024
Segment Assets	432,122	421,425	397,486
Paperboard [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	184,188	201,280	194,054
Operating Earnings	31,616	25,220	12,603
Capital Expenditures	10,085	2,898	2,579
Depreciation, Depletion, and Amortization	14,811	14,942	14,721
Segment Assets	170,832	163,797	180,025
Paperboard [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue	82,351	92,835	82,086
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	548	1,630	2,363
Depreciation, Depletion, and Amortization	3,117	2,812	2,850
Segment Assets	$ 76,081	$ 55,786	$ 52,087

Business Segments - Additional Information (Detail) $ in Millions		12 Months Ended
	May 01, 2024 USD ($)	Mar. 31, 2024 Terminal Facility Plant Location Segment Sector
Segment Reporting Information [Line Items]
Number of sectors \| Sector		2
Number of reportable business segments \| Segment		4
Cement plant locations \| Location		8
Slag grinding facility \| Facility		1
Cement distribution terminals \| Terminal		30
Readymix concrete batch plants		25
Aggregates processing plants		5
Gypsum wallboard plants		5
Proportionate consolidation of share of joint venture revenues and operating earnings		50.00%
Subsequent Event [Member]
Segment Reporting Information [Line Items]
Required percentage of purchase partnership interest	50.00%
Cost incurred in connection with purchase of partnership interest \| $	$ 550.0
Put option effective period	15 months
Put option expiration date	Aug. 01, 2025
HM Southeast Cement LLC [Member] \| Subsequent Event [Member]
Segment Reporting Information [Line Items]
Partnership interests	50.00%
Minimum [Member] \| Subsequent Event [Member]
Segment Reporting Information [Line Items]
Consideration for the purchase of assets or operations \| $	$ 1,000.0

Acquisition - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Business Acquisition [Line Items]
Goodwill	$ 392,569	$ 380,711
Stockton Terminal Acquisition [Member]
Business Acquisition [Line Items]
Inventory	14,809
Prepaid and Other Assets	179
Property, Plant, and Equipment	12,737
Lease Right-of-Use Assets	1,646
Intangible Assets	16,100
Lease Obligations	(1,646)
Other Long-term Liabilities	(630)
Goodwill	11,858
Total Purchase Price	$ 55,053

BUSINESS SEGMENTS (Tables)

12 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Financial Information Related to Operations by Segment

The following tables set forth certain financial information relating to our operations by segment. We do not allocate interest or taxes at the segment level, only at the consolidated company level.


	For the Years Ended March 31,
	2024			2023			2022
	(dollars in thousands)
Revenue
Cement	$	1,226,017		$	1,074,070		$	1,007,094
Concrete and Aggregates		252,952			239,516			177,122
Gypsum Wallboard		839,530			872,471			692,152
Paperboard		184,188			201,280			194,054
		2,502,687			2,387,337			2,070,422
Less: Intersegment Revenue		(130,654	)		(125,750	)		(105,001	)
Less: Joint Venture Revenue		(112,736	)		(113,518	)		(103,899	)
	$	2,259,297		$	2,148,069		$	1,861,522


	For the Years Ended March 31,
	2024		2023		2022
	(dollars in thousands)
Intersegment Revenue
Cement	$	35,363	$	32,915	$	22,915
Concrete and Aggregates		12,940		—		—
Paperboard		82,351		92,835		82,086
	$	130,654	$	125,750	$	105,001
Cement Sales Volume (M tons)
Wholly Owned		6,610		6,399		6,711
Joint Venture		679		734		823
		7,289		7,133		7,534


	For the Years Ended March 31,
	2024				2023			2022
				(dollars in thousands)
Operating Earnings
Cement	$	338,349			$	278,762		$	259,556
Concrete and Aggregates		12,401				18,259			18,467
Gypsum Wallboard		334,536				352,499			261,476
Paperboard		31,616				25,220			12,603
Sub-Total		716,902				674,740			552,102
Corporate General and Administrative Expense		(59,795	)			(53,630	)		(46,801	)
Loss on Early Retirement of Senior Notes		—				—			(8,407	)
Other Nonoperating Income (Loss)		3,087				2,654			9,073
Earnings Before Interest and Income Taxes		660,194				623,764			505,967
Interest Expense, net		(42,257	)			(35,171	)		(30,873	)
Earnings Before Income Taxes	$	617,937			$	588,593		$	475,094
Cement Operating Earnings
Wholly Owned	$	306,768			$	243,288		$	227,068
Joint Venture		31,581				35,474			32,488
	$	338,349			$	278,762		$	259,556
Capital Expenditures
Cement	$	65,442			$	39,049		$	31,535
Concrete and Aggregates		15,103				35,503			5,239
Gypsum Wallboard		29,127				31,063			32,405
Paperboard		10,085				2,898			2,579
Corporate and Other		548				1,630			2,363
	$	120,305			$	110,143		$	74,121
Depreciation, Depletion, and Amortization
Cement	$	89,138			$	81,643		$	79,560
Concrete and Aggregates		19,728				17,413			9,656
Gypsum Wallboard		23,038				21,744			22,024
Paperboard		14,811				14,942			14,721
Corporate and Other		3,117				2,812			2,850
	$	149,832			$	138,554		$	128,811


	March 31,
	2024		2023		2022
	(dollars in thousands)
Segment Assets
Cement	$	2,042,499	$	1,905,227	$	1,860,649
Concrete and Aggregates		225,485		234,767		89,405
Gypsum Wallboard		432,122		421,425		397,486
Paperboard		170,832		163,797		180,025
Corporate and Other, net		76,081		55,786		52,087
	$	2,947,019	$	2,781,002	$	2,579,652

Segment Breakdown of Goodwill

The segment breakdown of Goodwill at March 31, 2024 and 2023 is as follows:


	For the Years Ended March 31,
	2024		2023
	(dollars in thousands)
Cement	$	227,639	$	215,781
Concrete and Aggregates		40,774		40,774
Gypsum Wallboard		116,618		116,618
Paperboard		7,538		7,538
	$	392,569	$	380,711

Summarized Financial Information for Joint Venture Unconsolidated

Summarized financial information for the Joint Venture that is not consolidated is set out below. The summarized financial information includes the total amount of the Joint Venture and not our 50% interest in those amounts:


	For the Years Ended March 31,
	2024		2023
	(dollars in thousands)
Revenue	$	225,503	$	227,565
Gross Margin	$	71,077	$	77,673
Earnings Before Income Taxes	$	63,644	$	71,491


	As of March 31,
	2024		2023
	(dollars in thousands)
Current Assets	$	111,164	$	88,562
Noncurrent Assets	$	158,618	$	124,503
Current Liabilities	$	27,994	$	29,434

On May 1, 2024, the Company and HM Southeast Cement LLC, a subsidiary of Heidelberg Materials, (our Joint Venture Partner) entered into a put option agreement (Put Option Agreement) that provides for the grant of reciprocal put options by the parties with respect to their 50% partnership interests in the Joint Venture. If the Company or our Joint Venture Partner exercises its put option under the Put Option Agreement, the other party is required to purchase the 50% partnership interest held by the exercising party for approximately $550.0 million, subject to certain customary adjustments. The put option can only be exercised in the event of a triggering event, which is defined as the entry by the exercising party into a binding and effective outside purchase agreement. An outside purchase agreement is a definitive agreement for the purchase of assets or operations to be used in the production or sale of grey cement products or slag in the Joint Venture market area for total consideration equal to or greater than $1 billion. The Put Option Agreement is effective for 15 months, and expires on August 1, 2025.

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482548/350-20-55-24

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-1A

Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482573/350-20-50-2

+ Details

Pension and Profit Sharing Plans - Additional information (Detail)	12 Months Ended
	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($) Employee Compensationplan	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Current actuarial estimates contributions for fiscal year 2023	$ 0
Employees fully vesting in employer's own contributions made beginning in 2007, requirement years		4 years
Costs relating to employer discretionary contributions		$ 9,600,000	$ 9,100,000	$ 8,500,000
Current actuarial estimates contributions		$ 1,800,000	1,400,000	1,300,000
Number of employees covered under multi-employer pension plans \| Employee		50
Number of multi-employer plans \| Compensationplan		2
Expenses related to multi employer plans		$ 1,700,000	$ 1,800,000	$ 1,700,000
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Collective bargaining agreement for employer covered under multi-employer plans, Expiration date, First		Feb. 29, 2024
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Collective bargaining agreement for employer covered under multi-employer plans, Expiration date, First		Mar. 31, 2025
Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Expenses related to multi employer plans	$ 2,000,000

ACCRUED EXPENSES

12 Months Ended

Mar. 31, 2024

Payables and Accruals [Abstract]

ACCRUED EXPENSES

(D) Accrued Expenses

Accrued expenses consist of the following:


	March 31,
	2024		2023
	(dollars in thousands)
Payroll and Incentive Compensation	$	34,274	$	32,742
Benefits		17,507		16,130
Interest		6,374		7,163
Dividends		8,729		9,186
Property Taxes		5,921		6,671
Power and Fuel		2,993		3,051
Freight		2,893		1,663
Excise Tax		4,170		732
Legal and Professional		2,602		1,691
Sales and Use Tax		1,372		1,452
Other		7,492		5,991
	$	94,327	$	86,472

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2024	Mar. 31, 2023
Statement of Financial Position [Abstract]
Preferred Stock, Par Value	$ 0.01	$ 0.01
Preferred Stock, Authorized	5,000,000	5,000,000
Preferred Stock, Issued	0	0
Common Stock, Par Value	$ 0.01	$ 0.01
Common Stock, Authorized	100,000,000	100,000,000
Common Stock, Issued	34,143,945	35,768,376
Common Stock, Outstanding	34,143,945	35,768,376

Fair Value of Financial Instruments (Parenthetical) (Detail) - 2.500% Senior Unsecured Notes Due 2031 [Member]	12 Months Ended
	Mar. 31, 2024	Jul. 01, 2021
Fair Value Of Financial Instruments [Line Items]
Debt instrument, interest rate	2.50%	2.50%
Debt instrument, maturity year	2031

LEASES

12 Months Ended

Mar. 31, 2024

Leases [Abstract]

LEASES

(E) Leases

We lease certain real estate, buildings, and equipment, including rail cars and barges. Certain of these leases contain escalations of rent over the term of the lease, as well as options for us to extend the term of the lease at the end of the original term. These extensions range from periods of one year to twenty years. Our lease agreements do not contain material residual value guarantees or material restrictive covenants. In calculating the present value of future minimum lease payments, we use the rate implicit in the lease if it can be determined. Otherwise, we use our incremental borrowing rate in effect at the commencement of the lease to determine the present value of the future minimum lease payments. Additionally, we lease certain equipment under short-term leases with initial terms of less than 12 months. These short-term equipment leases are not recorded on the balance sheet.

Lease expense for our operating and short-term leases is as follows:


	For the Years Ended March 31,
	2024		2023		2022
	(dollars in thousands)
Operating Lease Cost	$	8,030	$	7,339	$	6,543
Short-term Lease Cost		691		593		1,261
Total Lease Cost	$	8,721	$	7,932	$	7,804

The Right-of-Use Assets and Lease Liabilities are reflected on our Balance Sheet as follows:


	March 31,
	2024		2023
	(dollars in thousands)
Operating Leases:
Operating Lease Right-of-Use Assets	$	19,373	$	20,759

Current Operating Lease Liabilities	$	7,899	$	6,009
Noncurrent Operating Lease Liabilities		19,037		24,940
Total Operating Lease Liabilities	$	26,936	$	30,949

Future payments for operating leases are as follows:


	Amount
Fiscal Year	(dollars in thousands)
2025	$	8,650
2026		4,785
2027		3,619
2028		2,752
2029		2,675
Thereafter		11,006
Total Lease Payments	$	33,487
Less: Imputed Interest		(6,551	)
Present Value of Lease Liabilities	$	26,936

Weighted-Average Remaining Lease Term (in years)		9.6
Weighted-Average Discount Rate		4.16	%

Pension and Profit Sharing Plans - Schedule of Expected Benefit Payments (Detail) $ in Thousands	Mar. 31, 2024 USD ($)
Retirement Benefits [Abstract]
2025	$ 1,843
2026	1,874
2027	1,951
2028	1,988
2029	1,962
2030-2034	$ 9,853

Pension and Profit Sharing Plans - Schedule of Assumptions Used in Net Periodic Benefit Cost and Benefit Obligations (Detail)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Retirement Benefits [Abstract]
Net Periodic Benefit Costs - Discount Rate	4.99%	3.75%	3.33%
Net Periodic Benefit Costs - Expected Return on Plan Assets	5.00%	3.85%	3.50%
Benefit Obligations - Discount Rate	5.27%	4.99%

Income Taxes - Schedule of Components of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Current Provision - Federal	$ 111,690	$ 103,940	$ 87,626
Current Provision - State	20,689	18,520	6,924
Current Provision - Total	132,379	122,460	94,550
Deferred Provision (Benefit) - Federal	5,607	11,321	3,491
Deferred Provision (Benefit) - State	2,312	(6,728)	2,806
Deferred Provision (Benefit) - Total	7,919	4,593	6,297
Provision for Income Taxes	$ 140,298	$ 127,053	$ 100,847

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

NET INTEREST EXPENSE (Tables)

12 Months Ended

Mar. 31, 2024

Banking and Thrift, Interest [Abstract]

Net Interest Expense, Net

The following components are included within Interest Expense, net:


	For the Years Ended March 31,
	2024			2023			2022
	(dollars in thousands)
Interest Income	$	(1,043	)	$	(421	)	$	(39	)
Interest Expense		41,403			33,706			21,637
Other Expenses		1,897			1,886			9,275
Interest Expense, net	$	42,257		$	35,171		$	30,873

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Schedule of Intangible Assets, Including Impact of Impairment Charges (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Cost	$ 554,565	$ 469,657
Intangible Assets, Accumulated Amortization	(96,406)	(88,522)
Goodwill, Cost	380,711	329,137
Goodwill, Additions	11,858	51,574
Goodwill, Net	392,569	380,711
Goodwill and Intangible Assets, Additions	27,958	84,908
Goodwill and Intangible Assets, net	486,117	466,043
Goodwill, Net	$ 392,569	$ 380,711
Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Useful Life		25 years
Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Useful Life		40 years
Customer Contracts And Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Useful Life	15 years	15 years
Intangible Assets, Cost	$ 141,194	$ 108,610
Intangible Assets, Additions	16,100	32,584
Intangible Assets, Accumulated Amortization	(82,077)	(75,413)
Intangible Assets, Net	75,217	65,781
Permits [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Cost	30,760	30,410
Intangible Assets, Additions		350
Intangible Assets, Accumulated Amortization	(13,413)	(12,519)
Intangible Assets, Net	$ 17,347	$ 18,241
Permits [Member] \| Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Useful Life	25 years
Permits [Member] \| Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Useful Life	40 years
Trade Name [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Useful Life	15 years	15 years
Intangible Assets, Cost	$ 1,900	$ 1,500
Intangible Assets, Additions		400
Intangible Assets, Accumulated Amortization	(916)	(590)
Intangible Assets, Net	$ 984	$ 1,310

Acquisition - Schedule of Revenue and Operating Earnings Related to Business Acquisition (Detail) - Stockton Terminal Acquisition [Member] $ in Thousands	12 Months Ended
	Mar. 31, 2024 USD ($)
Business Acquisition [Line Items]
Revenue	$ 39,345
Operating Earnings	$ (2,420)

SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Schedule of Inventories

Inventories consist of the following:


	March 31,
	2024		2023
	(dollars in thousands)
Raw Materials and Materials-in-Progress	$	122,772	$	96,880
Finished Cement		71,396		46,364
Aggregates		12,149		8,309
Gypsum Wallboard		5,242		4,244
Paperboard		14,278		8,651
Repair Parts and Supplies		127,511		112,885
Fuel and Coal		20,575		14,549
	$	373,923	$	291,882

Schedule of Property, Plant and Equipment Estimated Useful Lives

The estimated useful lives of the related assets are as follows:



Plants		20 to 30 years
Buildings		20 to 40 years
Machinery and Equipment		3 to 25 years

Schedule of Intangible Assets, Including Impact of Impairment Charge

Goodwill and Intangible Assets at March 31, 2024 and 2023, consist of the following:


	March 31, 2024
	Amortization Period	Cost		Additions		Accumulated Amortization			Net
	(dollars in thousands)
Goodwill and Intangible Assets:
Customer Contracts and Relationships	15 years	$	141,194	$	16,100	$	(82,077	)	$	75,217
Permits	25-40 years		30,760		—		(13,413	)		17,347
Trade Name	15 years		1,900		—		(916	)		984
Goodwill			380,711		11,858		—			392,569
Total Goodwill and Intangible Assets		$	554,565	$	27,958	$	(96,406	)	$	486,117


	March 31, 2023
	Amortization Period	Cost		Additions		Accumulated Amortization			Net
	(dollars in thousands)
Goodwill and Intangible Assets:
Customer Contracts and Relationships	15 years	$	108,610	$	32,584	$	(75,413	)	$	65,781
Permits	25-40 years		30,410		350		(12,519	)		18,241
Trade Name	15 years		1,500		400		(590	)		1,310
Goodwill			329,137		51,574		—			380,711
Total Goodwill and Intangible Assets		$	469,657	$	84,908	$	(88,522	)	$	466,043

Schedule of Supplemental Cash Flow Information

Supplemental cash flow information is as follows:


	For the Years Ended March 31,
		2024		2023		2022
	(dollars in thousands)
Cash Payments:
Interest	$	43,663	$	31,596	$	21,298
Income Taxes		124,482		131,512		86,407
Operating Cash Flows Used for Operating Leases		9,286		8,314		8,141

Noncash Financing Activities:
Right-of-Use Assets Obtained for Capitalized Operating Leases	$	6,465	$	1,711	$	2,598
Excise Tax on Share Repurchases		3,432		738		—

Schedule of Total Selling, General and Administrative Expenses

Total Selling, General, and Administrative Expenses for each of the periods are summarized as follows:


	For the Years Ended March 31,
	2024		2023		2022
	(dollars in thousands)
Operating Units Selling, G&A	$	75,001	$	65,468	$	56,561
Corporate G&A		59,795		53,630		46,801
	$	134,796	$	119,098	$	103,362

Schedule of Earnings per Share


	For the Years Ended March 31,
	2024			2023			2022
Weighted-Average Shares of Common Stock Outstanding		34,811,560			36,798,354			40,547,048
Effect of Dilutive Shares:
Assumed Exercise of Outstanding Dilutive Options		304,889			418,659			539,309
Less Shares Repurchased from Proceeds of Assumed Exercised Options		(157,457	)		(290,590	)		(343,917	)
Restricted Stock Units		138,879			126,519			187,272
Weighted-Average Common Stock and Dilutive Securities Outstanding		35,097,871			37,052,942			40,929,712

NET INTEREST EXPENSE

12 Months Ended

Mar. 31, 2024

Banking and Thrift, Interest [Abstract]

NET INTEREST EXPENSE

(L) Net Interest Expense

The following components are included within Interest Expense, net:


	For the Years Ended March 31,
	2024			2023			2022
	(dollars in thousands)
Interest Income	$	(1,043	)	$	(421	)	$	(39	)
Interest Expense		41,403			33,706			21,637
Other Expenses		1,897			1,886			9,275
Interest Expense, net	$	42,257		$	35,171		$	30,873

Interest Income includes interest earned on investments of excess Cash and Cash Equivalents. Components of Interest Expense include interest associated with the Revolving Credit Facility, Term Loan, Senior Unsecured Notes, and commitment fees based on the unused portion of the Revolving Credit Facility. Other Expenses include amortization of debt issuance costs and Revolving Credit Facility and Term Loan costs.

STOCK OPTION PLANS (Tables)

12 Months Ended

Mar. 31, 2024

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Period and vesting of performance shares

The stock option performance periods are as follows:


	Options		Performance Period	Vesting Date
One-Year Performance Shares		574	April 1, 2023 to March 31, 2024	May 2024
Two-Year Performance Shares		574	April 1, 2023 to March 31, 2025	May 2025
Three-Year Performance Shares		1,148	April 1, 2023 to March 31, 2026	May 2026

Weighted-Average Assumptions Used to Value Option Awards

The weighted-average assumptions used in the Black-Scholes model to value the option awards in fiscal 2024 and 2023 are as follows:


	2024			2023
Dividend Yield		7.5	%		0.8	%
Expected Volatility		38.8	%		38.2	%
Risk-Free Interest Rate		3.74	%		2.90	%
Expected Life	6.0 years			6.0 years

Stock Option Activity

The following table shows stock option activity for the years presented:


	For the Years Ended March 31,
	2024					2023					2022
	Number of Shares			Weighted- Average Exercise Price		Number of Shares			Weighted- Average Exercise Price		Number of Shares			Weighted- Average Exercise Price
Outstanding Options at Beginning of Year		436,949		$	89.69		456,849		$	83.81		708,501		$	83.85
Granted		5,558		$	172.62		56,621		$	125.90		11,316		$	140.42
Exercised		(189,143	)	$	90.40		(73,343	)	$	80.19		(247,578	)	$	86.97
Cancelled		(1,000	)	$	73.37		(3,178	)	$	109.15		(15,390	)	$	76.63
Outstanding Options at End of Year		252,364		$	91.28		436,949		$	89.69		456,849		$	83.81
Options Exercisable at End of Year		215,913					339,043					314,624
Weighted-Average Fair Value of Options Granted During the Year				$	69.84				$	48.36				$	49.18

Stock Options Outstanding

The following table summarizes information about stock options outstanding at March 31, 2024:


	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number of Shares Outstanding		Weighted- Average Remaining Contractual Life		Weighted- Average Exercise Price		Number of Shares Outstanding		Weighted- Average Exercise Price
$59.32 - $81.28		107,490		5.64	$	62.50		107,490	$	62.50
$91.21 - $106.00		75,608		4.27	$	94.15		73,750	$	94.07
$118.27 - $190.97		69,266		8.08	$	131.95		34,673	$	130.74
		252,364		5.90	$	91.04		215,913	$	84.24

Summary of Activity for Nonvested Restricted Shares

The following table summarizes the activity for nonvested restricted shares during the fiscal years ended March 31, 2024, 2023, and 2022:


	For the Years Ended March 31,
	2024					2023					2022
	Number of Shares			Weighted- Average Grant Date Fair Value		Number of Shares			Weighted- Average Grant Date Fair Value		Number of Shares			Weighted- Average Grant Date Fair Value
Nonvested Restricted Stock at Beginning of Year		219,084		$	96.54		258,779		$	85.34		267,090		$	62.56
Granted		97,257		$	169.62		111,230		$	126.23		113,414		$	139.91
Vested		(111,695	)	$	124.78		(147,678	)	$	104.33		(116,507	)	$	87.47
Cancelled		(3,000	)	$	30.38		(3,247	)	$	124.82		(5,218	)	$	75.10
Nonvested Restricted Stock at End of Year		201,646		$	122.58		219,084		$	96.54		258,779		$	85.34

Performance Vesting Restricted Stock [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Period and vesting of performance shares

The restricted share performance periods are as follows:


	Shares		Performance Period	Vesting Date
One-Year Performance Shares		11,424	April 1, 2023 to March 31, 2024	May 2024
Two-Year Performance Shares		11,424	April 1, 2023 to March 31, 2025	May 2025
Three-Year Performance Shares		22,845	April 1, 2023 to March 31, 2026	May 2026

During fiscal 2024, the return on equity exceeded 20%, therefore all One -Year Performance Shares were earned.

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 35
-Paragraph 1D
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480483/718-10-35-1D

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 35
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480483/718-10-35-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(01)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(02)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(03)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(02)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(03)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(v)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

ACQUISITION

12 Months Ended

Mar. 31, 2024

Business Combinations [Abstract]

ACQUISITION

(B) ACQUISITION

Stockton Terminal Acquisition

On May 3, 2023, we purchased the assets of a cement import terminal in Stockton, California (the Stockton Terminal Acquisition), which was accounted for under the acquisition method. The purchase price of the Stockton Terminal Acquisition was approximately $55.1 million. The purchase price was funded primarily through borrowings under our Revolving Credit Facility. Operations related to the Stockton Terminal Acquisition are included in the Cement business in our segment reporting from May 3, 2023 through March 31, 2024.

The following table summarizes the allocation of the Purchase Price to assets acquired and liabilities assumed:


	(dollars in thousands)
Inventory	$	14,809
Prepaid and Other Assets		179
Property, Plant, and Equipment		12,737
Lease Right-of-Use Assets		1,646
Intangible Assets		16,100
Lease Obligations		(1,646	)
Other Long-term Liabilities		(630	)
Goodwill		11,858
Total Purchase Price	$	55,053

The estimated useful lives assigned to Property, Plant, and Equipment range from 5 to 15 years, while the estimated useful lives assigned to Intangible Assets are 15 years.


	For the Year Ended March 31,
	2024
	(dollars in thousands)
Revenue	$	39,345
Operating Earnings	$	(2,420	)

Included in Operating Earnings shown above is approximately $2.6 million and $3.9 million related to depreciation and amortization and the recording of inventories at fair value, respectively.

Stock Option Activity (Detail) - $ / shares	12 Months Ended
Stock Option Activity (Detail) - $ / shares	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Share-Based Payment Arrangement [Abstract]
Number of Shares, Outstanding Options at Beginning of Year	436,949	456,849	708,501
Number of Shares, Granted	5,558	56,621	11,316
Number of Shares, Exercised	(189,143)	(73,343)	(247,578)
Number of Shares, Cancelled	(1,000)	(3,178)	(15,390)
Number of Shares, Outstanding Options at End of Year	252,364	436,949	456,849
Number of Shares, Options Exercisable at End of Year	215,913	339,043	314,624
Weighted-Average Exercise Price, Outstanding Options at Beginning of Year	$ 89.69	$ 83.81	$ 83.85
Weighted-Average Exercise Price, Granted	172.62	125.9	140.42
Weighted-Average Exercise Price, Exercised	90.4	80.19	86.97
Weighted-Average Exercise Price, Cancelled	73.37	109.15	76.63
Weighted-Average Exercise Price, Outstanding Options at End of Year	91.28	89.69	83.81
Weighted-Average Fair Value of Options Granted During the Year	$ 69.84	$ 48.36	$ 49.18

Acquisition - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	May 03, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Business Acquisition [Line Items]
Purchase price of separate operating segment		$ 55,053	$ 158,451	$ 0
Depreciation		$ 139,500	$ 129,600	$ 122,400
Stockton Terminal Acquisition [Member]
Business Acquisition [Line Items]
Purchase price of separate operating segment	$ 55,100
Acquired intangible assets estimated useful life		15 years
Depreciation		$ 2,600
Amortization		$ 3,900
Stockton Terminal Acquisition [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Property, plant and equipment, estimated useful life		5 years
Stockton Terminal Acquisition [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Property, plant and equipment, estimated useful life		15 years

Consolidated Statements of Comprehensive Earnings (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Unrealized Gain During the Period, tax expense	$ (24)	$ (147)	$ 48
Amortization of Net Actuarial Loss, tax benefit	$ 59	$ 30	$ 39

Schedule Of Period And Vesting Of Performance Share (Detail) - shares	1 Months Ended	12 Months Ended
	May 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares available for future grant		1,411,799
Options granted		5,558	56,621	11,316
One-Year Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares available for future grant	11,424
Vesting Date	2024-05
One-Year Performance Shares [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Performance Period	Apr. 01, 2023
One-Year Performance Shares [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Performance Period	Mar. 31, 2024
Two-Year Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares available for future grant	11,424
Vesting Date	2025-05
Two-Year Performance Shares [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Performance Period	Apr. 01, 2023
Two-Year Performance Shares [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Performance Period	Mar. 31, 2025
Three-Year Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares available for future grant	22,845
Vesting Date	2026-05
Three-Year Performance Shares [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Performance Period	Apr. 01, 2023
Three-Year Performance Shares [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Performance Period	Mar. 31, 2026
Long Term Compensation Plan [Member] \| One-Year Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Options granted	574
Vesting Date	2024-05
Long Term Compensation Plan [Member] \| One-Year Performance Shares [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Performance Period	Apr. 01, 2023
Long Term Compensation Plan [Member] \| One-Year Performance Shares [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Performance Period	Mar. 31, 2024
Long Term Compensation Plan [Member] \| Two-Year Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Options granted	574
Vesting Date	2025-05
Long Term Compensation Plan [Member] \| Two-Year Performance Shares [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Performance Period	Apr. 01, 2023
Long Term Compensation Plan [Member] \| Two-Year Performance Shares [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Performance Period	Mar. 31, 2025
Long Term Compensation Plan [Member] \| Three-Year Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Options granted	1,148
Vesting Date	2026-05
Long Term Compensation Plan [Member] \| Three-Year Performance Shares [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Performance Period	Apr. 01, 2023
Long Term Compensation Plan [Member] \| Three-Year Performance Shares [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Performance Period	Mar. 31, 2026

Business Segments - Segment Breakdown of Goodwill (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Goodwill	$ 392,569	$ 380,711
Cement [Member]
Segment Reporting Information [Line Items]
Goodwill	227,639	215,781
Concrete and Aggregates [Member]
Segment Reporting Information [Line Items]
Goodwill	40,774	40,774
Gypsum Wallboard [Member]
Segment Reporting Information [Line Items]
Goodwill	116,618	116,618
Paperboard [Member]
Segment Reporting Information [Line Items]
Goodwill	$ 7,538	$ 7,538

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References + Details

SIGNIFICANT ACCOUNTING POLICIES (Policies)

12 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Basis of Presentation

The consolidated financial statements include the accounts of Eagle Materials Inc. and its majority-owned subsidiaries (the Company), which may be referred to as we, our, or us. All intercompany balances and transactions have been eliminated. The Company is a holding company whose assets consist of its investments in its subsidiaries, a joint venture, intercompany balances, and holdings of cash and cash equivalents. The businesses of the consolidated group are conducted through the Company’s subsidiaries. The Company conducts one of its cement plant operations through a joint venture, Texas Lehigh Cement Company L.P., which is located in Buda, Texas (the Joint Venture). Our investment in the Joint Venture is accounted for using the equity method of accounting, and those results have been included for the same period as our March 31 fiscal year end.

The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents

Cash Equivalents include short-term, highly liquid investments with original maturities of three months or less and are recorded at cost, which approximates market value.

Accounts and Notes Receivable

Accounts and Notes Receivable have been shown net of the allowance for doubtful accounts of $6.7 million and $6.9 million at March 31, 2024 and 2023, respectively. We perform ongoing credit evaluations of our customers’ financial condition and generally require no collateral from our customers. The allowance for non-collection of receivables is based on our assessment of the collectability of outstanding accounts receivable, and includes a provision for probable losses based on historical write-offs, adjusted for current economic trends in the construction industry, and a specific reserve for accounts deemed at risk. We have no significant credit risk concentration among our diversified customer bases. Bad debt expense was approximately $0.3 million, $0.3 million, and $0.3 million for the fiscal years ended March 31, 2024, 2023, and 2022, respectively. Write-offs of accounts receivable were approximately $0.6 million, $0.1 million, and $1.6 million for the fiscal years ended March 31, 2024, 2023, and 2022, respectively.

We had Notes Receivable totaling approximately $8.5 million at March 31, 2023, of which $1.1 million was classified as current. On April 28, 2023, we collected the entire $8.5 million balance owed under the Notes Receivable. From time to time, we lend funds to certain companies in the ordinary course of business. The notes are generally collateralized by certain assets of the borrowers, namely property and equipment. We monitor the credit risk of each borrower by focusing on the timeliness of payments, credit history review, credit metrics, and interaction with the borrowers.

Inventories

Inventories are stated at the lower of average cost (including applicable material, labor, depreciation, and plant overhead) or net realizable value. Raw Materials and Materials-in-Progress include clinker, which is an intermediary product before it is ground into cement powder. Quantities of Raw Materials and Materials-in-Progress, Aggregates and Coal inventories, are based on measured volumes, subject to estimation based on the size and location of the inventory piles, and then converted to tonnage using standard inventory density factors. Inventories consist of the following:


	March 31,
	2024		2023
	(dollars in thousands)
Raw Materials and Materials-in-Progress	$	122,772	$	96,880
Finished Cement		71,396		46,364
Aggregates		12,149		8,309
Gypsum Wallboard		5,242		4,244
Paperboard		14,278		8,651
Repair Parts and Supplies		127,511		112,885
Fuel and Coal		20,575		14,549
	$	373,923	$	291,882

Property, Plant and Equipment

Property, Plant, and Equipment

Property, Plant, and Equipment are stated at cost. Major renewals and improvements are capitalized and depreciated. Annual maintenance is expensed as incurred. Depreciation is provided on a straight-line basis over the estimated useful lives of depreciable assets and totaled $139.5 million, $129.6 million, and $122.4 million, for the fiscal years ended March 31, 2024, 2023, and 2022, respectively. Raw material deposits are depleted as such deposits are extracted for production utilizing the units-of-production method. Costs and accumulated depreciation applicable to assets retired or sold are eliminated from the accounts and any resulting gains or losses are recognized at such time. The estimated useful lives of the related assets are as follows:



Plants		20 to 30 years
Buildings		20 to 40 years
Machinery and Equipment		3 to 25 years

Maintenance and repair expenses are included in each segment’s costs and expenses. We incurred $220.1 million, $173.4 million, and $147.8 million of maintenance and repair expenses in the fiscal years ended March 31, 2024, 2023, and 2022, respectively, which is included in Cost of Goods Sold on the Consolidated Statement of Earnings.

Goodwill and Intangible Assets

Goodwill

We annually assess Goodwill in the fourth quarter of our fiscal year, or more frequently when indicators of impairment exist. Impairment testing for Goodwill is done at the reporting unit, which is consistent with the reportable segment.

Goodwill is considered impaired if the carrying value of the reporting unit exceeds its fair value. Prior to performing the Step 1 quantitative test, we may, at our discretion, perform an optional qualitative analysis, or we may choose to proceed directly to the Step 1 quantitative test. The qualitative analysis considers

the impact of the following events and circumstances on the reporting unit being tested: macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, and other relevant entity-specific events. If, as a result of this qualitative analysis, we conclude that it is more likely than not (a likelihood of greater than 50%) that the fair value of the reporting unit exceeds its carrying value, then an impairment does not exist and the Step 1 quantitative test is not required. If we are unable to conclude that it is more likely than not that the fair value of the reporting unit exceeds its carrying value, then we proceed to the Step 1 quantitative test.

Step 1 of the quantitative test for impairment compares the fair value of the reporting unit to its carrying value. If the carrying value exceeds the fair value, then an impairment is indicated. If facts and circumstances related to our business change in subsequent years, we may choose to perform a quantitative analysis in those future years. If we perform a Step 1 quantitative test and the carrying value of the reporting unit exceeds its fair value, then an impairment charge equal to the difference, not to exceed the total amount of Goodwill, is recorded.

The fair values of the reporting units are estimated by using both the market and income approaches. The market approach considers market factors and certain multiples in comparison to similar companies, while the income approach uses discounted cash flows to determine the estimated fair values of the reporting units. We also perform an overall comparison of all reporting units to our market capitalization in order to test the reasonableness of our fair value calculations.

We elected to perform a Step 1 quantitative test on all of our reporting units with Goodwill during the fourth quarter of fiscal 2024. We estimated the fair value of the reporting unit using a discounted cash flow model as well as a market analysis. Key assumptions in the model included estimated average net sales prices, sales volumes, and the estimated weighted average cost of capital specific to each industry. Based on the results of the Step 1 quantitative analysis, we concluded that the fair values of the reporting units substantially exceeded their carrying values, and therefore no impairment was recognized.

We performed qualitative assessments on all of our reporting units in the fourth quarter of fiscal years 2023 and 2022. As a result of these qualitative assessments, we determined it was not more likely than not that an impairment existed; therefore, we did not perform a Step 1 quantitative test in either fiscal 2023 or fiscal 2022.

Goodwill and Intangible Assets

Goodwill and Intangible Assets at March 31, 2024 and 2023, consist of the following:


	March 31, 2024
	Amortization Period	Cost		Additions		Accumulated Amortization			Net
	(dollars in thousands)
Goodwill and Intangible Assets:
Customer Contracts and Relationships	15 years	$	141,194	$	16,100	$	(82,077	)	$	75,217
Permits	25-40 years		30,760		—		(13,413	)		17,347
Trade Name	15 years		1,900		—		(916	)		984
Goodwill			380,711		11,858		—			392,569
Total Goodwill and Intangible Assets		$	554,565	$	27,958	$	(96,406	)	$	486,117


	March 31, 2023
	Amortization Period	Cost		Additions		Accumulated Amortization			Net
	(dollars in thousands)
Goodwill and Intangible Assets:
Customer Contracts and Relationships	15 years	$	108,610	$	32,584	$	(75,413	)	$	65,781
Permits	25-40 years		30,410		350		(12,519	)		18,241
Trade Name	15 years		1,500		400		(590	)		1,310
Goodwill			329,137		51,574		—			380,711
Total Goodwill and Intangible Assets		$	469,657	$	84,908	$	(88,522	)	$	466,043

Amortization expense of intangibles was $7.9 million, $6.8 million, and $4.4 million for the fiscal years ended March 31, 2024, 2023, and 2022, respectively. Amortization expense is expected to be approximately $7.7 million in fiscal 2025, $7.6 million in fiscal 2026, $7.5 million in fiscal 2027, $7.4 million in fiscal 2028, and $7.1 million in fiscal 2029.

Impairment or Disposal of Long-Lived and Intangible Assets

We assess our long-lived assets, including mining and related assets, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset, or group of assets, may not be recoverable. Long-lived assets, or group of assets, are evaluated for impairment at the lowest level for which cash flows are largely independent of the cash flows of other assets. We assess recoverability of assets, or group of assets, by comparing the carrying amount of an asset, or group of assets, to the future undiscounted net cash flows that we expect the asset, or group of assets, to generate. These impairment evaluations are significantly affected by estimates of future revenue, costs and expenses, and other factors. If the carrying value of the assets, or group of assets, exceeds the undiscounted cash flows, then an impairment is indicated. If such assets, or group of assets, are considered to be impaired, the impairment is recognized as the amount by which the carrying amount of the asset, or group of assets, exceeds the fair value of the asset, or group of assets. Any assets held for sale are reflected at the lower of their carrying amount or fair value less cost to sell. There were no indicators of impairment related to our long-lived assets during fiscal 2024.

Other Assets

Other Assets are primarily composed of financing costs related to our Revolving Credit Facility, deferred expenses, and deposits.

Income Taxes

We account for Income Taxes using the asset and liability method. The effect on deferred taxes of a change in tax rates is recognized in earnings in the period that includes the enactment date. We recognize deferred taxes for the differences between financial statement carrying amounts and the tax bases of existing assets and liabilities by applying enacted statutory tax rates for future years. In addition, we recognize future tax benefits to the extent that such benefits are more likely than not to be realized. See Footnote (I) for more information.

Stock Repurchases

Shares repurchased by the Company are considered retired and available for future issuance. When shares are repurchased, the Company first reduces Capital in Excess of Par Value, and if there is no balance in this account, the purchases are recorded as a reduction of Retained Earnings.

On May 17, 2022, the Board authorized the Company to repurchase an additional 7,500,000 shares. During fiscal years 2024, 2023, and 2022, we repurchased 1,863,534, 3,075,788, and 3,982,657 shares, respectively, at average prices of $243.02, $126.05, and $148.08, respectively. At March 31, 2024, the remaining authorized shares for repurchase totaled 5,883,670 shares.

Revenue Recognition

We earn Revenue primarily from the sale of products, which include cement, concrete, aggregates, gypsum wallboard, and recycled paperboard. The majority of Revenue from the sale of concrete, aggregates, and gypsum wallboard is originated by purchase orders from our customers, who are mainly third-party contractors and suppliers. Revenue from the sale of cement is sold point-of-sale to customers under sales orders. Revenue from our Recycled Paperboard segment is generated mostly through long-term supply agreements. These agreements do not have a stated maturity date, but may be terminated by either party with a two- to three-year notice period. We invoice customers upon shipment, and our collection terms range from 30 to 75 days. Revenue from the sale of cement, concrete, aggregates, and gypsum wallboard that is not related to long-term supply agreements is recognized upon shipment of the related products to customers, which is when title and ownership are transferred, and the customer is obligated to pay.

Revenue from sales under our long-term supply agreements is also recognized upon transfer of control to the customer, which occurs at the time the product is shipped from the production facility. Our long-term supply agreements with customers define, among other commitments, the volume of product we must provide and the volume the customer must purchase by the end of the defined periods. Pricing structures under our agreements are generally market-based, but are subject to certain contractual adjustments. Shortfall amounts, if applicable under these arrangements, are constrained and not recognized as Revenue until agreement is reached with the customer and there is no risk of reversal.

The Company offers certain of its customers, including those with long-term supply agreements, rebates and incentives, which we treat as variable consideration. We adjust the amount of revenue recognized for the variable consideration using the most likely amount method based on past history and projected volumes in the rebate and incentive period. Any amounts billed to customers for taxes are excluded from Revenue.

The Company has elected to treat freight and delivery charges we pay for the delivery of goods to our customers as a fulfilment activity rather than a separate performance obligation. When we arrange for a third party to deliver products to customers, fees for shipping and handling billed to the customer are recorded as Revenue, while costs incurred for shipping and handling are recorded as expenses and included in Cost of Goods Sold.

Approximately $215.3 million, $229.6 million, and $199.1 million of freight for the fiscal years ended March 31, 2024, 2023, and 2022, respectively, were included in both Revenue and Cost of Goods Sold in our Consolidated Statement of Earnings.

Other Nonoperating Income includes lease and rental income, asset sale income, non-inventoried aggregates sales income, and trucking income, as well as other miscellaneous revenue items and costs that have not been allocated to a business segment.

See Footnote (H) for disaggregation of Revenue by segment.

Comprehensive Income/Losses

As of March 31, 2024, we have an Accumulated Other Comprehensive Loss of $3.4 million, which is net of income taxes of $1.1 million, in connection with recognizing the difference between the fair value of the pension assets and the projected benefit obligation.

Consolidated Cash Flows - Supplemental Disclosures

Consolidated Cash Flows – Supplemental Disclosures

Supplemental cash flow information is as follows:


	For the Years Ended March 31,
		2024		2023		2022
	(dollars in thousands)
Cash Payments:
Interest	$	43,663	$	31,596	$	21,298
Income Taxes		124,482		131,512		86,407
Operating Cash Flows Used for Operating Leases		9,286		8,314		8,141

Noncash Financing Activities:
Right-of-Use Assets Obtained for Capitalized Operating Leases	$	6,465	$	1,711	$	2,598
Excise Tax on Share Repurchases		3,432		738		—

Selling, General and Administrative Expenses

Selling, General, and Administrative Expenses

Selling, General, and Administrative Expenses of the operating units are included in Cost of Goods Sold on the Consolidated Statements of Earnings. Corporate General and Administrative (Corporate G&A) Expenses include administration, financial, legal, employee benefits, and other corporate activities, and are shown separately in the Consolidated Statements of Earnings. Corporate G&A also includes stock compensation expense. See Footnote (K) for more information.

Total Selling, General, and Administrative Expenses for each of the periods are summarized as follows:


	For the Years Ended March 31,
	2024		2023		2022
	(dollars in thousands)
Operating Units Selling, G&A	$	75,001	$	65,468	$	56,561
Corporate G&A		59,795		53,630		46,801
	$	134,796	$	119,098	$	103,362

Earnings Per Share

Earnings per Share


	For the Years Ended March 31,
	2024			2023			2022
Weighted-Average Shares of Common Stock Outstanding		34,811,560			36,798,354			40,547,048
Effect of Dilutive Shares:
Assumed Exercise of Outstanding Dilutive Options		304,889			418,659			539,309
Less Shares Repurchased from Proceeds of Assumed Exercised Options		(157,457	)		(290,590	)		(343,917	)
Restricted Stock Units		138,879			126,519			187,272
Weighted-Average Common Stock and Dilutive Securities Outstanding		35,097,871			37,052,942			40,929,712

The line Less Shares Repurchased from Proceeds of Assumed Exercised Options includes unearned compensation related to outstanding stock options.

There were 16,609, 52,375, and 6,053 stock options at an average exercise price of $133.91 per share, $127.06 per share, and $139.80 per share, respectively, that were excluded from the computation of

diluted earnings per share for the fiscal years ended March 31, 2024, 2023, and 2022, because such inclusion would have been anti-dilutive.

Share-Based Compensation

All share-based compensation is valued at the grant date and expensed over the requisite service period, which is generally identical to the vesting period of the award. Forfeitures of share-based awards are recognized in the period in which they occur.

Fair Value Measures

Certain assets and liabilities are required to be recorded or disclosed at fair value. The estimated fair values of those assets and liabilities have been determined using market information and valuation methodologies. Changes in assumptions or estimation methods could affect the fair value estimates; however, we do not believe any such changes would have a material impact on our financial condition, results of operations, or cash flows. There are three levels of inputs that may be used to measure fair value:

Level 1 – Quoted prices for identical assets and liabilities in active markets;

Level 2 – Quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data; and

Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies, and similar techniques that use significant unobservable inputs.

Recent Accounting Pronouncements

RECENTLY ADOPTED

None.

PENDING ADOPTION

In November 2023, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (ASU 2023-07), which is intended to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. ASU 2023-07 will become effective for public companies during annual reporting periods beginning after December 15, 2023, and interim reporting periods beginning after December 15, 2024, with early adoption permitted. The Company is currently evaluating the impact of adopting this guidance on its Consolidated Financial Statements.

In December 2023, the FASB issued Accounting Standards Update No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (ASU 2023-09), which focuses on the rate reconciliation and income taxes paid. ASU 2023-09 requires public entities to disclose, on an annual basis, a tabular rate reconciliation using both percentages and currency amounts organized by specified categories with certain reconciling items broken out by nature and jurisdiction to the extent those items exceed a specified threshold. Additionally, all entities are required to disclose income taxes paid, net of refunds received, disaggregated by federal, state, and local, and by individual jurisdiction if the amount is at least 5% of the total income tax payments, net of refunds received. ASU 2023-09 is effective prospectively for annual periods beginning after December 15, 2024. Early adoption and retrospective application are

permitted. ASU 2023-09 will not have any impact on the Company's results of operations, cash flows, and financial condition.

STOCK OPTION PLANS

12 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

STOCK OPTION PLANS

(K) Stock Option Plans

On August 3, 2023, our stockholders approved the Eagle Materials Inc. 2023 Equity Incentive Plan (the 2023 Plan), which reserves 1,425,000 shares for future grants of stock awards. Under the terms of the 2023 Plan, we can issue equity awards, including stock options, restricted stock units, restricted stock, and stock appreciation rights to employees of the Company, members of the Board of Directors, consultants, independent contractors, and agents of the Company. The Compensation Committee of our Board (the Compensation Committee) specifies grant terms for awards under the Plan.

Long-Term Compensation Plans

Options

In May 2023, under the 2013 Amended and Restated Incentive Plan (the Prior Plan), the Compensation Committee of the Board approved the granting to certain officers and key employees an aggregate of 2,296 performance-vesting stock options that would be earned only if certain performance conditions were satisfied (the Fiscal 2024 Employee Performance Stock Option Award). The performance criterion for the Fiscal 2024 Employee Performance Stock Option Award was based upon the achievement of certain levels of return on equity (as defined in the option agreements), ranging from 10% to 20%, from the performance periods described below. All stock options in each performance period will be earned if the return on equity is 20% or greater. If the return on equity is less than 20% but at least 10% in any performance period, the amount of stock options earned in such period will be reduced proportionately using straight-line interpolation, such that approximately 66.7% of the amount of stock options granted will be earned if the return on equity is 10%. If the Company does not achieve a return on equity of at least 10% during any performance period, all stock option awards for the performance period will be forfeited.

The stock option performance periods are as follows:


	Options		Performance Period	Vesting Date
One-Year Performance Shares		574	April 1, 2023 to March 31, 2024	May 2024
Two-Year Performance Shares		574	April 1, 2023 to March 31, 2025	May 2025
Three-Year Performance Shares		1,148	April 1, 2023 to March 31, 2026	May 2026

The stock options have a term of 10 years from the grant date. During fiscal 2024, the return on equity exceeded 20%, therefore all of the One-Year Performance Shares were earned.

The Compensation Committee also approved the granting of 1,914 time-vesting stock options to the same officers and key employees, which vest ratably over three years.

In August 2023, under the 2023 Plan, the Compensation Committee granted 1,348 options to members of the Board (the Fiscal 2024 Board Stock Option Award). Options granted under the Fiscal 2024 Board Stock Option Award vest one year after the date of grant, and can be exercised from the vesting date until their expiration on the tenth anniversary of the grant date.

All stock options issued during fiscal 2024 and 2023 were valued at the grant date using the Black-Scholes option pricing model. The weighted-average assumptions used in the Black-Scholes model to value the option awards in fiscal 2024 and 2023 are as follows:


	2024			2023
Dividend Yield		7.5	%		0.8	%
Expected Volatility		38.8	%		38.2	%
Risk-Free Interest Rate		3.74	%		2.90	%
Expected Life	6.0 years			6.0 years

In addition to the stock options described above, we issue stock options to certain employees from time to time. Any options issued are valued using the Black-Scholes option pricing model on the grant date and expensed over the vesting period.

Stock option expense for all outstanding stock option awards was approximately $2.0 million, $3.4 million, and $3.4 million for the years ended March 31, 2024, 2023, and 2022, respectively. At March 31, 2024, there was approximately $1.7 million of unrecognized compensation cost related to outstanding stock options, which is expected to be recognized over a weighted-average period of 1.9 years.

The following table shows stock option activity for the years presented:


	For the Years Ended March 31,
	2024					2023					2022
	Number of Shares			Weighted- Average Exercise Price		Number of Shares			Weighted- Average Exercise Price		Number of Shares			Weighted- Average Exercise Price
Outstanding Options at Beginning of Year		436,949		$	89.69		456,849		$	83.81		708,501		$	83.85
Granted		5,558		$	172.62		56,621		$	125.90		11,316		$	140.42
Exercised		(189,143	)	$	90.40		(73,343	)	$	80.19		(247,578	)	$	86.97
Cancelled		(1,000	)	$	73.37		(3,178	)	$	109.15		(15,390	)	$	76.63
Outstanding Options at End of Year		252,364		$	91.28		436,949		$	89.69		456,849		$	83.81
Options Exercisable at End of Year		215,913					339,043					314,624
Weighted-Average Fair Value of Options Granted During the Year				$	69.84				$	48.36				$	49.18

The following table summarizes information about stock options outstanding at March 31, 2024:


	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number of Shares Outstanding		Weighted- Average Remaining Contractual Life		Weighted- Average Exercise Price		Number of Shares Outstanding		Weighted- Average Exercise Price
$59.32 - $81.28		107,490		5.64	$	62.50		107,490	$	62.50
$91.21 - $106.00		75,608		4.27	$	94.15		73,750	$	94.07
$118.27 - $190.97		69,266		8.08	$	131.95		34,673	$	130.74
		252,364		5.90	$	91.04		215,913	$	84.24

At March 31, 2024, the aggregate intrinsic value for outstanding and exercisable options was approximately $45.6 million and $40.5 million, respectively. The total intrinsic value of options exercised during the fiscal years ended March 31, 2024, 2023, and 2022 was approximately $18.8 million, $4.4 million and $15.7 million, respectively.

Restricted Stock

In May 2023, under the Prior Plan, the Compensation Committee approved the granting to certain officers and key employees an aggregate of 45,693 shares of performance-vesting restricted stock that would be earned only if certain performance conditions were satisfied (the Fiscal 2024 Employee Restricted Stock Performance Award). The performance criterion for the Fiscal 2024 Employee Restricted Stock Performance Award was based upon the achievement of certain levels of return on equity (as defined in the agreement), ranging from 10% to 20%, for the performance periods described below. All stock options in each performance period will be earned if the return on equity is 20% or greater. If the return on equity is less than 20% but at least 10% in any performance period, the amount of stock options earned in such period will be reduced proportionately using straight-line interpolation, such that approximately 66.7% of the amount of stock options granted will be earned if the return on equity is 10%. If the Company does not achieve a return on equity of at least 10% during any performance period, all awards for the period will be forfeited. The restricted share performance periods are as follows:


	Shares		Performance Period	Vesting Date
One-Year Performance Shares		11,424	April 1, 2023 to March 31, 2024	May 2024
Two-Year Performance Shares		11,424	April 1, 2023 to March 31, 2025	May 2025
Three-Year Performance Shares		22,845	April 1, 2023 to March 31, 2026	May 2026

During fiscal 2024, the return on equity exceeded 20%, therefore all One -Year Performance Shares were earned.

The Compensation Committee also approved the granting of 38,072 shares of time-vesting restricted stock to the same officers and key employees, which vest ratably over three years (the Fiscal 2024 Employee Restricted Stock Time-Vesting Award). The Fiscal 2024 Employee Restricted Stock Performance Award and the Fiscal 2024 Employee Restricted Stock Time-Vesting Award were valued at the closing price of the stock on the date of grant and are being expensed over a three-year period.

In August 2023, under the 2023 Plan, we granted 10,755 shares of restricted stock to members of the Board (the Fiscal 2024 Board Restricted Stock Award). Restrictions on these shares will lapse one year after the grant date. The Fiscal 2024 Board Restricted Stock Award was valued at the closing price of the stock on the grant date and is being expensed over a one-year period.

In addition to the restricted stock described above, from time to time we issue restricted stock to certain employees. These awards are valued at the closing price of the stock on the grant date and expensed over the vesting period.

The fair value of restricted stock is estimated based on the stock price at the date of the grant. The following table summarizes the activity for nonvested restricted shares during the fiscal years ended March 31, 2024, 2023, and 2022:


	For the Years Ended March 31,
	2024					2023					2022
	Number of Shares			Weighted- Average Grant Date Fair Value		Number of Shares			Weighted- Average Grant Date Fair Value		Number of Shares			Weighted- Average Grant Date Fair Value
Nonvested Restricted Stock at Beginning of Year		219,084		$	96.54		258,779		$	85.34		267,090		$	62.56
Granted		97,257		$	169.62		111,230		$	126.23		113,414		$	139.91
Vested		(111,695	)	$	124.78		(147,678	)	$	104.33		(116,507	)	$	87.47
Cancelled		(3,000	)	$	30.38		(3,247	)	$	124.82		(5,218	)	$	75.10
Nonvested Restricted Stock at End of Year		201,646		$	122.58		219,084		$	96.54		258,779		$	85.34

Expense related to restricted shares was $17.9 million, $13.7 million, and $10.9 million in fiscal years ended March 31, 2024, 2023, and 2022, respectively. At March 31, 2024, there were approximately 201,000 shares with remaining restrictions, for which $17.4 million of unearned compensation will be recognized over a weighted-average period of 1.4 years.

The number of shares available for future grants of stock options, restricted stock units, stock appreciation rights, and restricted stock under the 2023 Plan was 1,411,799 shares at March 31, 2024.

Schedule of Total Selling, General and Administrative Expenses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Accounting Policies [Abstract]
Operating Units Selling, G&A	$ 75,001	$ 65,468	$ 56,561
Corporate G&A	59,795	53,630	46,801
Total selling, general and administrative expenses	$ 134,796	$ 119,098	$ 103,362

Significant Accounting Policies - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Apr. 28, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	May 17, 2022
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts		$ 6,700	$ 6,900
Bad debt expense		300	300	$ 300
Write-offs of accounts receivable		600	100	1,600
Notes receivable, total			8,500
Notes receivable, current			1,100
Proceeds from collection of notes receivable	$ 8,500
Depreciable assets		$ 139,500	129,600	122,400
Basis of valuation		Property, Plant, and Equipment are stated at cost.
Depreciation Method		straight-line basis over the estimated useful lives
Goodwill impairment more likely than not a likelihood as greater percentage of fair value of reportable unit exceeds its carrying value		50.00%
Intangible Assets, Amortization Expense		$ 7,900	$ 6,800	$ 4,400
Amortization expense, expected, for fiscal year 2025		7,700
Amortization expense, expected, for fiscal year 2026		7,600
Amortization expense, expected, for fiscal year 2027		7,500
Amortization expense, expected, for fiscal year 2028		7,400
Amortization expense, expected, for fiscal year 2029		$ 7,100
Number of additional shares authorized to be repurchased					7,500,000
Repurchase of shares		1,863,534	3,075,788	3,982,657
Shares repurchased average price		$ 243.02	$ 126.05	$ 148.08
Stock repurchase remaining number of shares authorized to be repurchased		5,883,670
Freight expense		$ 1,573,976	$ 1,508,803	$ 1,341,908
Accumulated other comprehensive loss		3,373	3,547
Net of income taxes for accumulated other comprehensive loss		1,100
Maintenance and repair expenses		$ 220,100	$ 173,400	$ 147,800
Stock options excluded from computation of diluted earnings per share		16,609	52,375	6,053
Stock options, average exercise price per share		$ 133.91	$ 127.06	$ 139.8
Freight [Member]
Significant Accounting Policies [Line Items]
Freight expense		$ 215,300	$ 229,600	$ 199,100
Minimum [Member]
Significant Accounting Policies [Line Items]
Long term supply agreements term of termination notice period		2 years
Revenue from contract with customer collection terms		30 days
Maximum [Member]
Significant Accounting Policies [Line Items]
Long term supply agreements term of termination notice period		3 years
Revenue from contract with customer collection terms		75 days

SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

SIGNIFICANT ACCOUNTING POLICIES

(A) Significant Accounting Policies

Basis of Presentation

Cash and Cash Equivalents

Cash Equivalents include short-term, highly liquid investments with original maturities of three months or less and are recorded at cost, which approximates market value.

Accounts and Notes Receivable

Inventories


	March 31,
	2024		2023
	(dollars in thousands)
Raw Materials and Materials-in-Progress	$	122,772	$	96,880
Finished Cement		71,396		46,364
Aggregates		12,149		8,309
Gypsum Wallboard		5,242		4,244
Paperboard		14,278		8,651
Repair Parts and Supplies		127,511		112,885
Fuel and Coal		20,575		14,549
	$	373,923	$	291,882

Property, Plant, and Equipment



Plants		20 to 30 years
Buildings		20 to 40 years
Machinery and Equipment		3 to 25 years

Goodwill and Intangible Assets

Goodwill

Goodwill and Intangible Assets

Goodwill and Intangible Assets at March 31, 2024 and 2023, consist of the following:


	March 31, 2024
	Amortization Period	Cost		Additions		Accumulated Amortization			Net
	(dollars in thousands)
Goodwill and Intangible Assets:
Customer Contracts and Relationships	15 years	$	141,194	$	16,100	$	(82,077	)	$	75,217
Permits	25-40 years		30,760		—		(13,413	)		17,347
Trade Name	15 years		1,900		—		(916	)		984
Goodwill			380,711		11,858		—			392,569
Total Goodwill and Intangible Assets		$	554,565	$	27,958	$	(96,406	)	$	486,117


	March 31, 2023
	Amortization Period	Cost		Additions		Accumulated Amortization			Net
	(dollars in thousands)
Goodwill and Intangible Assets:
Customer Contracts and Relationships	15 years	$	108,610	$	32,584	$	(75,413	)	$	65,781
Permits	25-40 years		30,410		350		(12,519	)		18,241
Trade Name	15 years		1,500		400		(590	)		1,310
Goodwill			329,137		51,574		—			380,711
Total Goodwill and Intangible Assets		$	469,657	$	84,908	$	(88,522	)	$	466,043

Impairment or Disposal of Long-Lived and Intangible Assets

Other Assets

Other Assets are primarily composed of financing costs related to our Revolving Credit Facility, deferred expenses, and deposits.

Income Taxes

Stock Repurchases

Revenue Recognition

See Footnote (H) for disaggregation of Revenue by segment.

Comprehensive Income/Losses

Consolidated Cash Flows – Supplemental Disclosures

Supplemental cash flow information is as follows:


	For the Years Ended March 31,
		2024		2023		2022
	(dollars in thousands)
Cash Payments:
Interest	$	43,663	$	31,596	$	21,298
Income Taxes		124,482		131,512		86,407
Operating Cash Flows Used for Operating Leases		9,286		8,314		8,141

Noncash Financing Activities:
Right-of-Use Assets Obtained for Capitalized Operating Leases	$	6,465	$	1,711	$	2,598
Excise Tax on Share Repurchases		3,432		738		—

Selling, General, and Administrative Expenses

Total Selling, General, and Administrative Expenses for each of the periods are summarized as follows:


	For the Years Ended March 31,
	2024		2023		2022
	(dollars in thousands)
Operating Units Selling, G&A	$	75,001	$	65,468	$	56,561
Corporate G&A		59,795		53,630		46,801
	$	134,796	$	119,098	$	103,362

Earnings per Share


	For the Years Ended March 31,
	2024			2023			2022
Weighted-Average Shares of Common Stock Outstanding		34,811,560			36,798,354			40,547,048
Effect of Dilutive Shares:
Assumed Exercise of Outstanding Dilutive Options		304,889			418,659			539,309
Less Shares Repurchased from Proceeds of Assumed Exercised Options		(157,457	)		(290,590	)		(343,917	)
Restricted Stock Units		138,879			126,519			187,272
Weighted-Average Common Stock and Dilutive Securities Outstanding		35,097,871			37,052,942			40,929,712

The line Less Shares Repurchased from Proceeds of Assumed Exercised Options includes unearned compensation related to outstanding stock options.

diluted earnings per share for the fiscal years ended March 31, 2024, 2023, and 2022, because such inclusion would have been anti-dilutive.

Share-Based Compensation

Fair Value Measures

Level 1 – Quoted prices for identical assets and liabilities in active markets;

Recent Accounting Pronouncements

RECENTLY ADOPTED

None.

PENDING ADOPTION

permitted. ASU 2023-09 will not have any impact on the Company's results of operations, cash flows, and financial condition.

INDEBTEDNESS (Tables)

12 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Long-Term Debt

Long-term debt consists of the following:


	As of March 31,
	2024			2023
	(dollars in thousands)
Revolving Credit Facility	$	170,000		$	157,000
2.500% Senior Unsecured Notes Due 2031		750,000			750,000
Term Loan		182,500			192,500
Total Debt		1,102,500			1,099,500
Less: Current Portion of Long-term Debt		(10,000	)		(10,000	)
Less: Unamortized Discount and Debt Issuance Costs		(9,201	)		(10,468	)
Long-term Debt	$	1,083,299		$	1,079,032

Schedule of Maturities of Long-Term Debt

Our maturities of long-term debt during the next five fiscal years are as follows:


Fiscal Year	Amount
2025	$	10,000
2026		10,000
2027		10,000
2028		322,500
2029		—
Thereafter		750,000
Total	$	1,102,500

INCOME TAXES

12 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

INCOME TAXES

(I) Income Taxes

The provision for income taxes from continuing operations includes the following components:


	For the Years Ended March 31,
	2024		2023			2022
	(dollars in thousands)
Current Provision
Federal	$	111,690	$	103,940		$	87,626
State		20,689		18,520			6,924
		132,379		122,460			94,550
Deferred Provision (Benefit)
Federal		5,607		11,321			3,491
State		2,312		(6,728	)		2,806
		7,919		4,593			6,297
Provision for Income Taxes	$	140,298	$	127,053		$	100,847

The effective tax rates vary from the federal statutory rates due to the following items:


	For the Years Ended March 31,
	2024			2023			2022
	(dollars in thousands)
Earnings Before Income Taxes	$	617,937		$	588,593		$	475,094
Income Taxes at Statutory Rate	$	129,766		$	123,605		$	99,770
Increases (Decreases) in Tax Resulting from
State Income Taxes, net		18,172			16,821			12,743
Statutory Depletion in Excess of Cost		(9,883	)		(8,253	)		(7,796	)
Excess Tax Benefit from Stock Compensation		(5,417	)		(1,593	)		(3,048	)
Meals and Entertainment Disallowance		524			484			279
Limitation on Officer's Compensation		6,513			3,009			2,568
Valuation Allowance		500			(7,205	)		(4,556	)
Other		123			185			887
Provision for Income Taxes	$	140,298		$	127,053		$	100,847
Effective Tax Rate		23	%		22	%		21	%

Components of deferred income taxes are as follows:


	March 31,
	2024			2023
	(dollars in thousands)
Items Giving Rise to Deferred Tax Liabilities
Excess Tax Depreciation and Amortization	$	(260,577	)	$	(253,541	)
Investment in Joint Venture Basis Differences		(4,294	)		(8,744	)
Depletable Assets		(7,710	)		(3,876	)
Right-of-Use Assets		(4,774	)		(5,202	)
Inventory		—			(406	)
Other		(2,956	)		(2,908	)
Total Deferred Tax Liabilities	$	(280,311	)	$	(274,677	)
Items Giving Rise to Deferred Tax Assets
Change in Accruals	$	13,313		$	12,886
Bad Debts		1,621			1,662
Long-term Incentive Compensation Plan		3,622			3,515
Credits and Other Carryforwards		11,466			12,995
Lease Liability		6,598			7,647
Inventory		307			—
Pension		1,087			1,128
Subtotal		38,014			39,833
Valuation Allowance		(2,500	)		(2,000	)
Total Deferred Tax Assets	$	35,514		$	37,833

We record Deferred Tax Assets and Liabilities based upon estimates of their realizable value with such estimates based upon likely future tax consequences. In assessing the need for a Valuation Allowance, we consider both positive and negative evidence related to the likelihood of realization of the Deferred Tax Assets. If, based on the weight of available evidence, it is more likely than not that a Deferred Tax Asset will not be realized, we record a Valuation Allowance.

We had state net operating loss carryforwards of $1.6 million at March 31, 2024, compared with $2.3 million at March 31, 2023, net of Valuation Allowance. We had state income tax credit carryforwards of $9.9 million at March 31, 2024, compared with $10.7 million at March 31, 2023, net of Valuation Allowance. The state income tax credits may be carried forward indefinitely.

We file income tax returns in U.S. federal and various state jurisdictions. The Company is currently subject to U.S. federal income tax examinations for the year ended March 31, 2019, and forward.

Uncertain Tax Positions

We are subject to audit examinations at federal, state, and local levels by tax authorities in those jurisdictions who may challenge the treatment or reporting of any return item. The tax matters challenged by the tax authorities are typically complex; therefore, the ultimate outcome of these challenges is subject to uncertainty.

We review and assess all tax positions subject to uncertainty on a more-likely-than-not standard with respect to the ultimate outcome if challenged. We measure and record tax benefit or expense only when

the more-likely-than-not threshold is met. The change in unrecognized tax benefits for the years ended March 31, 2024, 2023, and 2022 was as follows:


	For the Years Ended March 31,
	2024		2023		2022
	(dollars in thousands)
Balance at Beginning of Year	$	1,284	$	1,284	$	1,284
Increase Related to Current Tax Positions		—		—		—
Decrease Related to Current Tax Positions		—		—		—
Payments		—		—		—
	$	1,284	$	1,284	$	1,284

We classify interest and penalties related to uncertain tax positions as current income tax expense. We recorded no interest and penalties for each of the fiscal years ended March 31, 2024, 2023, and 2022.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//740/tableOfContent

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-14

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-21

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482526/740-270-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-17

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.5.Q1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482603/740-30-50-2

+ Details

Consolidated Statements of Earnings - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Revenue	$ 2,259,297	$ 2,148,069	$ 1,861,522
Cost of Goods Sold	1,573,976	1,508,803	1,341,908
Gross Profit	685,321	639,266	519,614
Equity in Earnings of Unconsolidated Joint Venture	31,581	35,474	32,488
Corporate General and Administrative Expense	(59,795)	(53,630)	(46,801)
Loss on Early Retirement of Senior Notes	0	0	(8,407)
Other Nonoperating Income	3,087	2,654	9,073
Interest Expense, net	(42,257)	(35,171)	(30,873)
Earnings Before Income Taxes	617,937	588,593	475,094
Income Taxes	(140,298)	(127,053)	(100,847)
Net Earnings	$ 477,639	$ 461,540	$ 374,247
EARNINGS PER SHARE
Basic	$ 13.72	$ 12.54	$ 9.23
Diluted	$ 13.61	$ 12.46	$ 9.14
AVERAGE SHARES OUTSTANDING
Basic	34,811,560	36,798,354	40,547,048
Diluted	35,097,871	37,052,942	40,929,712
CASH DIVIDENDS PER SHARE	$ 1	$ 1	$ 0.75

COMMITMENTS AND CONTINGENCIES

12 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

(J) Commitments and Contingencies

Our operations and properties are subject to extensive and changing federal, state, and local laws; regulations and ordinances governing the protection of the environment; as well as laws relating to worker health and workplace safety. We carefully consider the requirements mandated by such laws and regulations and have procedures in place at all of our operating units to monitor compliance. Any matters that are identified as potential exposures under these laws and regulations are carefully reviewed by management to determine our potential liability. Although management is not aware of any material exposures that require an accrual under generally accepted accounting principles, there can be no assurance that prior or future operations will not ultimately result in violations, claims, or other liabilities associated with these regulations.

We have certain deductible limits under our workers’ compensation and liability insurance policies for which reserves are established based on the undiscounted estimated costs of known and anticipated claims. We have entered into standby letter of credit agreements relating to workers’ compensation, auto, and general liability self-insurance. At March 31, 2024, we had contingent liabilities under these outstanding letters of credit of approximately $8.3 million.

We are currently contingently liable for performance under $29.3 million in performance bonds required by certain states and municipalities, and their related agencies. The bonds are principally for certain reclamation obligations and mining permits. We have indemnified the underwriting insurance company against any exposure under the performance bonds. In our experience, no material claims have been made against these financial instruments.

Other

In the ordinary course of business, we execute contracts involving indemnifications that are standard in the industry and indemnifications specific to a transaction, such as the sale of a business. These indemnifications might include claims relating to any of the following: environmental and tax matters; intellectual property rights; governmental regulations and employment-related matters; customer, supplier, construction contractor, and other commercial contractual relationships; and financial matters. While the maximum amount to which we may be exposed under such agreements cannot be estimated, it is the opinion of management that these indemnifications are not expected to have a material adverse effect on the Company’s consolidated financial position, results of operations, or cash flows. We currently have no outstanding guarantees of third-party debt.

We have certain forward purchase contracts, primarily for natural gas, that expire during calendar years 2024 and 2025. The contracts comprise approximately 35% of our anticipated natural gas usage.

Commitments and Contingencies - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2024 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Letters of credit outstanding, amount	$ 8,300,000
Contingently liable for performance, current	29,300,000
Outstanding guarantees	$ 0
Percentage of expected natural gas usage	35.00%

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Current Assets
Cash and Cash Equivalents	$ 34,925	$ 15,242
Accounts and Notes Receivable, net	202,985	195,052
Inventories	373,923	291,882
Income Tax Receivable	9,910	16,267
Prepaid and Other Assets	5,950	3,060
Total Current Assets	627,693	521,503
Property, Plant, and Equipment, net	1,676,217	1,662,061
Notes Receivable	0	7,382
Investment in Joint Venture	113,478	89,111
Operating Lease Right-of-Use Assets	19,373	20,759
Goodwill and Intangible Assets, net	486,117	466,043
Other Assets	24,141	14,143
Total Assets	2,947,019	2,781,002
Current Liabilities
Accounts Payable	127,183	110,408
Accrued Liabilities	94,327	86,472
Operating Lease Liabilities	7,899	6,009
Current Portion of Long-term Debt	10,000	10,000
Total Current Liabilities	239,409	212,889
Long-term Debt	1,083,299	1,079,032
Noncurrent Operating Lease Liabilities	19,037	24,940
Other Long-term Liabilities	51,942	41,603
Deferred Income Taxes	244,797	236,844
Total Liabilities	1,638,484	1,595,308
Stockholders' Equity
Preferred Stock, Par Value $0.01; Authorized 5,000,000 Shares; None Issued	0	0
Common Stock, Par Value $0.01; Authorized 100,000,000 Shares; Issued and Outstanding 34,143,945 and 35,768,376 Shares, respectively	341	358
Capital in Excess of Par Value	0	0
Accumulated Other Comprehensive Losses	(3,373)	(3,547)
Retained Earnings	1,311,567	1,188,883
Total Stockholders’ Equity	1,308,535	1,185,694
Total Liabilities and Stockholders' Equity	$ 2,947,019	$ 2,781,002

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
Document and Entity Information - USD ($) $ in Billions	Mar. 31, 2024	May 17, 2024	Sep. 30, 2023
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Mar. 31, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Trading Symbol	EXP
Entity Registrant Name	EAGLE MATERIALS INC.
Entity Central Index Key	0000918646
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		33,915,345
Entity Public Float			$ 5.7
Title of 12(b) Security	Common Stock (par value $.01 per share)
Security Exchange Name	NYSE
Entity File Number	1-12984
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	75-2520779
Entity Address, Address Line One	5960 Berkshire Lane
Entity Address, Address Line Two	Suite 900
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75225
City Area Code	214
Local Phone Number	432-2000
Document Annual Report	true
Document Transition Report	false
Document Financial Statement Error Correction [Flag]	false
Documents Incorporated by Reference	Portions of the Proxy Statement for the Annual Meeting of Stockholders of Eagle Materials Inc. to be held on August 1, 2024 are incorporated by reference in Part III of this Report.
Auditor Firm ID	42
Auditor Location	Dallas, Texas
Auditor Name	Ernst & Young LLP

Indebtedness - Schedule of Maturities of Long-Term Debt (Detail) $ in Thousands	Mar. 31, 2024 USD ($)
Debt Disclosure [Abstract]
2025	$ 10,000
2026	10,000
2027	10,000
2028	322,500
2029	0
Thereafter	750,000
Total	$ 1,102,500

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References + Details

Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Accounts Payable and Accrued Liabilities, Current [Abstract]
Payroll and Incentive Compensation	$ 34,274	$ 32,742
Benefits	17,507	16,130
Interest	6,374	7,163
Dividends	8,729	9,186
Property Taxes	5,921	6,671
Power and Fuel	2,993	3,051
Freight	2,893	1,663
Excise Tax	4,170	732
Legal and Professional	2,602	1,691
Sales and Use Tax	1,372	1,452
Other	7,492	5,991
Accrued Expenses, Total	$ 94,327	$ 86,472

Pension and Profit Sharing Plans - Schedule of Fair Values of Defined Benefit Plans Determined Using Fair Value Hierarchy of Inputs (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	$ 30,124	$ 31,106	$ 36,313
Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	583	417
Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	29,541	30,689
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	0	2,878
Equity Securities [Member] \| Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	0	2,878
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	29,541	27,811
Fixed Income Securities [Member] \| Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	29,541	27,811
Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	583	417
Cash Equivalents [Member] \| Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	$ 583	$ 417

- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References + Details

ACCRUED EXPENSES (Tables)

12 Months Ended

Mar. 31, 2024

Payables and Accruals [Abstract]

Schedule of Accrued Expenses

Accrued expenses consist of the following:


	March 31,
	2024		2023
	(dollars in thousands)
Payroll and Incentive Compensation	$	34,274	$	32,742
Benefits		17,507		16,130
Interest		6,374		7,163
Dividends		8,729		9,186
Property Taxes		5,921		6,671
Power and Fuel		2,993		3,051
Freight		2,893		1,663
Excise Tax		4,170		732
Legal and Professional		2,602		1,691
Sales and Use Tax		1,372		1,452
Other		7,492		5,991
	$	94,327	$	86,472

Schedule of Future Payments for Operating Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Leases [Abstract]
2025	$ 8,650
2026	4,785
2027	3,619
2028	2,752
2029	2,675
Thereafter	11,006
Total Lease Payments	33,487
Less: Imputed Interest	(6,551)
Present Value of Lease Liabilities	$ 26,936	$ 30,949
Weighted-Average Remaining Lease Term (in years)	9 years 7 months 6 days
Weighted-Average Discount Rate	4.16%

Property Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 3,164,817	$ 3,026,642
Accumulated Depreciation	(1,488,600)	(1,364,581)
Property, Plant and Equipment, Net	1,676,217	1,662,061
Land And Quarries [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	330,874	311,743
Plants [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	2,501,627	2,423,426
Buildings Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	264,180	226,018
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 68,136	$ 65,455

BUSINESS SEGMENTS

12 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

BUSINESS SEGMENTS

(H) Business Segments

Operating segments are defined as components of an enterprise that engage in business activities that earn revenue, incur expenses, and prepare separate financial information that is evaluated regularly by our chief operating decision maker in order to allocate resources and assess performance.

Our business is organized into two sectors within which there are four reportable business segments. The Heavy Materials sector includes the Cement and Concrete and Aggregates segments. The Light Materials sector includes the Gypsum Wallboard and Recycled Paperboard segments.

Our primary products are commodities that are essential in commercial and residential construction; public construction projects to build, expand, and repair roads and highways; and repair and remodel activities. Demand for our products is generally cyclical and seasonal, depending on economic and geographic conditions. We distribute our products across many United States markets, which provides us with regional economic diversification. Our operations are conducted in the U.S. and include the mining of limestone for the manufacture, production, distribution, and sale of portland cement (a basic construction material that is the essential binding ingredient in concrete); the grinding and sale of slag; the mining of gypsum for the manufacture and sale of gypsum wallboard; the manufacture and sale of recycled paperboard to the gypsum wallboard industry and other paperboard converters; the sale of readymix concrete; and the mining and sale of aggregates (crushed stone, sand, and gravel).

We operate eight modern cement plants (one of which is operated through a joint venture located in Buda, Texas), one slag grinding facility, and over 30 cement distribution terminals, including terminals acquired in the Stockton Terminal Acquisition. Our cement companies focus on the U.S. heartland and operate as an integrated network selling product primarily in California, Colorado, Illinois, Indiana, Iowa, Kansas, Kentucky, Missouri, Nebraska, Nevada, Ohio, Oklahoma, Tennessee, and Texas. We operate over 25 readymix concrete batch plants and five aggregates processing plants in markets that are complementary to our cement network.

We operate five gypsum wallboard plants and a recycled paperboard mill. We distribute gypsum wallboard and recycled paperboard throughout the continental U.S., with the exception of the Northeast.

We account for intersegment sales at market prices. For segment reporting purposes only, we proportionately consolidate our 50% share of the Joint Venture Revenue and Operating Earnings, consistent with the way management reports the segments within the Company for making operating decisions and assessing performance.

The following tables set forth certain financial information relating to our operations by segment. We do not allocate interest or taxes at the segment level, only at the consolidated company level.


	For the Years Ended March 31,
	2024			2023			2022
	(dollars in thousands)
Revenue
Cement	$	1,226,017		$	1,074,070		$	1,007,094
Concrete and Aggregates		252,952			239,516			177,122
Gypsum Wallboard		839,530			872,471			692,152
Paperboard		184,188			201,280			194,054
		2,502,687			2,387,337			2,070,422
Less: Intersegment Revenue		(130,654	)		(125,750	)		(105,001	)
Less: Joint Venture Revenue		(112,736	)		(113,518	)		(103,899	)
	$	2,259,297		$	2,148,069		$	1,861,522


	For the Years Ended March 31,
	2024		2023		2022
	(dollars in thousands)
Intersegment Revenue
Cement	$	35,363	$	32,915	$	22,915
Concrete and Aggregates		12,940		—		—
Paperboard		82,351		92,835		82,086
	$	130,654	$	125,750	$	105,001
Cement Sales Volume (M tons)
Wholly Owned		6,610		6,399		6,711
Joint Venture		679		734		823
		7,289		7,133		7,534


	For the Years Ended March 31,
	2024				2023			2022
				(dollars in thousands)
Operating Earnings
Cement	$	338,349			$	278,762		$	259,556
Concrete and Aggregates		12,401				18,259			18,467
Gypsum Wallboard		334,536				352,499			261,476
Paperboard		31,616				25,220			12,603
Sub-Total		716,902				674,740			552,102
Corporate General and Administrative Expense		(59,795	)			(53,630	)		(46,801	)
Loss on Early Retirement of Senior Notes		—				—			(8,407	)
Other Nonoperating Income (Loss)		3,087				2,654			9,073
Earnings Before Interest and Income Taxes		660,194				623,764			505,967
Interest Expense, net		(42,257	)			(35,171	)		(30,873	)
Earnings Before Income Taxes	$	617,937			$	588,593		$	475,094
Cement Operating Earnings
Wholly Owned	$	306,768			$	243,288		$	227,068
Joint Venture		31,581				35,474			32,488
	$	338,349			$	278,762		$	259,556
Capital Expenditures
Cement	$	65,442			$	39,049		$	31,535
Concrete and Aggregates		15,103				35,503			5,239
Gypsum Wallboard		29,127				31,063			32,405
Paperboard		10,085				2,898			2,579
Corporate and Other		548				1,630			2,363
	$	120,305			$	110,143		$	74,121
Depreciation, Depletion, and Amortization
Cement	$	89,138			$	81,643		$	79,560
Concrete and Aggregates		19,728				17,413			9,656
Gypsum Wallboard		23,038				21,744			22,024
Paperboard		14,811				14,942			14,721
Corporate and Other		3,117				2,812			2,850
	$	149,832			$	138,554		$	128,811


	March 31,
	2024		2023		2022
	(dollars in thousands)
Segment Assets
Cement	$	2,042,499	$	1,905,227	$	1,860,649
Concrete and Aggregates		225,485		234,767		89,405
Gypsum Wallboard		432,122		421,425		397,486
Paperboard		170,832		163,797		180,025
Corporate and Other, net		76,081		55,786		52,087
	$	2,947,019	$	2,781,002	$	2,579,652

Segment Operating Earnings, including the proportionately consolidated 50% interest in the revenue and expenses of the Joint Venture, represent Revenue less direct operating expenses, segment Depreciation, and segment Selling, General, and Administrative expenses. Segment Operating Earnings don’t include certain nonrecurring losses, such as impairment and legal settlements. We account for intersegment sales at market prices. Corporate assets consist primarily of cash and cash equivalents, general office assets, and miscellaneous other assets.

The basis used to disclose Identifiable Assets; Capital Expenditures; and Depreciation, Depletion, and Amortization conforms with the equity method, and is similar to how we disclose these accounts in our Consolidated Balance Sheets and Consolidated Statements of Earnings.

The segment breakdown of Goodwill at March 31, 2024 and 2023 is as follows:


	For the Years Ended March 31,
	2024		2023
	(dollars in thousands)
Cement	$	227,639	$	215,781
Concrete and Aggregates		40,774		40,774
Gypsum Wallboard		116,618		116,618
Paperboard		7,538		7,538
	$	392,569	$	380,711


	For the Years Ended March 31,
	2024		2023
	(dollars in thousands)
Revenue	$	225,503	$	227,565
Gross Margin	$	71,077	$	77,673
Earnings Before Income Taxes	$	63,644	$	71,491


	As of March 31,
	2024		2023
	(dollars in thousands)
Current Assets	$	111,164	$	88,562
Noncurrent Assets	$	158,618	$	124,503
Current Liabilities	$	27,994	$	29,434

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-15

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-40

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//280/tableOfContent

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-26

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-34

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-41

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-21

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-21

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

+ Details

PENSION AND PROFIT SHARING PLANS

12 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

PENSION AND PROFIT SHARING PLANS

(M) Pension and Profit Sharing Plans

We offer our employees multiple retirement and profit sharing plans.

Pension Plans

We have several defined benefit and defined contribution retirement plans that together cover substantially all of our employees. Benefits paid under the defined benefit plans covering certain hourly employees are based on years of service and each employee’s qualifying compensation over the last few years of employment. During fiscal 2020, the last of our pension plans that was still accruing benefits was frozen; therefore, none of our pension plans are accruing additional benefits. Our funding policy is to generally contribute amounts to ensure our pension assets are consistent with our pension liabilities. The annual measurement date is March 31 for the benefit obligations, fair value of plan assets, and the funded status of the defined benefit plans.

The following table provides a reconciliation of the Benefit Obligations and Fair Values of Plan Assets for all defined benefit plans for the years ended March 31, 2024 and 2023, as well as a statement of the funded status for the same periods:


	For the Years Ended March 31,
	2024			2023
	(dollars in thousands)
Reconciliation of Benefit Obligations
Benefit Obligation at April 1,	$	29,189		$	33,909
Interest Cost on Projected Benefit Obligation		1,413			1,240
Actuarial Gain		(829	)		(4,509	)
Benefits Paid		(1,643	)		(1,451	)
Benefit Obligation at March 31,	$	28,130		$	29,189
Reconciliation of Fair Value of Plan Assets
Fair Value of Plan Assets at April 1,	$	31,106		$	36,313
Actual Return on Plan Assets		641			(3,756	)
Employer Contributions		20			—
Benefits Paid		(1,643	)		(1,451	)
Fair Value of Plan Assets at March 31,		30,124			31,106
Funded Status
Funded Status at March 31,	$	1,994		$	1,917
Amounts Recognized in the Balance Sheet Include:
Other Assets	$	1,994		$	1,917
Accumulated Other Comprehensive Losses
Net Actuarial Loss		4,454			4,662
Accumulated Other Comprehensive Losses	$	4,454		$	4,662
Tax Impact		(1,081	)		(1,115	)
Accumulated Other Comprehensive Losses, net of tax	$	3,373		$	3,547

Net periodic pension cost for the fiscal years ended March 31, 2024, 2023, and 2022, included the following components:


	For the Years Ended March 31,
	2024			2023			2022
	(dollars in thousands)
Interest Cost of Projected Benefit Obligation		1,413			1,240			1,167
Expected Return on Plan Assets		(1,512	)		(1,366	)		(1,299	)
Recognized Net Actuarial Loss		250			123			143
Net Periodic Pension Cost	$	151		$	(3	)	$	11

Expected benefit payments over the next five years, and the following five years under the pension plans are expected to be as follows (dollars in thousands):


Fiscal Years	Total
2025	$	1,843
2026	$	1,874
2027	$	1,951
2028	$	1,988
2029	$	1,962
2030-2034	$	9,853

The following tables set forth the assumptions used in the actuarial calculations of the present value of Net Periodic Benefit Costs and Benefit Obligations:


	March 31,
	2024			2023			2022
Net Periodic Benefit Costs
Discount Rate		4.99	%		3.75	%		3.33	%
Expected Return on Plan Assets		5.00	%		3.85	%		3.50	%
Rate of Compensation Increase	n/a			n/a			n/a


	March 31,
		2024			2023
Benefit Obligations
Discount Rate		5.27	%		4.99	%
Rate of Compensation Increase	n/a			n/a

The expected long-term rate of return on plan assets is an assumption reflecting the anticipated weighted-average rate of earnings on the portfolio over the long term. To determine this rate, we developed estimates of the key components underlying capital asset returns that include: market-based estimates of inflation, real risk-free rates of return, yield curve structure, credit-risk premiums, and equity-risk premiums. Because our pension plans were frozen beginning in fiscal 2021, the rate of compensation increase is not applicable. We used these components as appropriate to develop benchmark estimates for the expected long-term management approach that we employ.

The pension plans’ approximate weighted-average asset allocation at March 31, 2024 and 2023, and the range of target allocation are as follows:


		Percentage of Plan Assets at March 31,
	Range of Target Allocation	2024			2023
Asset Category
Equity Securities	10 – 20%		—			9	%
Debt Securities	60 – 90%		98	%		89	%
Other	0 – 20%		2	%		2	%
Total			100	%		100	%

Our pension investment strategies have been developed as part of a comprehensive management process that considers the interaction between the assets and liabilities within each plan. These strategies consider not only the expected risks and returns on plan assets, but also the detailed actuarial projections of liabilities as well as plan-level objectives, such as projected contributions, expense, and funded status.

The principal pension investment strategies include asset allocation and active asset management. The range of target asset allocations has been determined given the current funded status of the plan. Each asset class is actively managed by one or more external money managers with the objective of generating returns, net of management fees, that exceed market-based benchmarks. None of the plans hold any Company stock.

Based on our current actuarial estimates, we do not anticipate making any contributions to our defined benefit plans for fiscal 2025.

The fair values of our defined benefit plans’ consolidated assets by category as of March 31, 2024 and 2023 were as follows:


	March 31,
	2024		2023
	(dollars in thousands)
Equity Securities	$	—	$	2,878
Fixed Income Securities		29,541		27,811
Cash Equivalents		583		417
Total	$	30,124	$	31,106

The fair values of our defined benefit plans’ consolidated assets were determined using the fair value hierarchy of inputs described in Footnote (A) to the Consolidated Financial Statements.

The fair values by category of inputs as of March 31, 2024, were as follows:


	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Asset Categories	(dollars in thousands)
Equity Securities	$	—	$	—	$	—	$	—
Fixed Income Securities		—		29,541		—		29,541
Cash Equivalents		583		—		—		583
	$	583	$	29,541	$	—	$	30,124

The fair values by category of inputs as of March 31, 2023, were as follows:


	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Asset Categories	(dollars in thousands)
Equity Securities	$	—	$	2,878	$	—	$	2,878
Fixed Income Securities		—		27,811		—		27,811
Cash Equivalents		417		—		—		417
	$	417	$	30,689	$	—	$	31,106

Equity securities consist of funds that are not actively traded. These funds are maintained by an investment manager and are primarily invested in indexes. The remaining funds, excluding cash, primarily consist of investments in institutional funds.

Profit Sharing Plans

We also provide profit sharing plans, which cover substantially all salaried and certain hourly employees. The profit sharing plans are defined contribution plans funded by employer discretionary contributions; employees may also contribute a certain percentage of their base annual salary. Employees are fully vested in their own contributions and become fully vested in any Company contributions over a four-year period. Costs relating to the employer discretionary contributions for our plan totaled $9.6 million, $9.1 million, and $8.5 million in fiscal years 2024, 2023, and 2022, respectively.

We also made matching contributions to the hourly profit sharing plan for certain of our entities totaling $1.8 million, $1.4 million, and $1.3 million for these employees during fiscal years 2024, 2023, and 2022, respectively.

Approximately 50 of our employees belong to two different multi-employer plans. One of the collective bargaining agreements for the employees who participate in the multi-employer plans expired in February 2024 and is currently being renegotiated, and the other expires in March 2025. Our expense related to these plans was approximately $1.7 million, $1.8 million, and $1.7 million during fiscal years 2024, 2023, and 2022, respectively. We anticipate the total expense in fiscal 2025 related to these plans will be approximately $2.0 million.

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480794/715-70-50-1

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480482/715-20-55-17

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(03)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (q)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (l)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//715/tableOfContent

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (o)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (p)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (r)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (r)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480126/715-20-S99-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480266/715-60-50-3

+ Details

INCOME TAXES (Tables)

12 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Schedule of Components of Provision for Income Taxes

The provision for income taxes from continuing operations includes the following components:


	For the Years Ended March 31,
	2024		2023			2022
	(dollars in thousands)
Current Provision
Federal	$	111,690	$	103,940		$	87,626
State		20,689		18,520			6,924
		132,379		122,460			94,550
Deferred Provision (Benefit)
Federal		5,607		11,321			3,491
State		2,312		(6,728	)		2,806
		7,919		4,593			6,297
Provision for Income Taxes	$	140,298	$	127,053		$	100,847

Schedule of Effective Tax Rates Vary from Federal Statutory Rates

The effective tax rates vary from the federal statutory rates due to the following items:


	For the Years Ended March 31,
	2024			2023			2022
	(dollars in thousands)
Earnings Before Income Taxes	$	617,937		$	588,593		$	475,094
Income Taxes at Statutory Rate	$	129,766		$	123,605		$	99,770
Increases (Decreases) in Tax Resulting from
State Income Taxes, net		18,172			16,821			12,743
Statutory Depletion in Excess of Cost		(9,883	)		(8,253	)		(7,796	)
Excess Tax Benefit from Stock Compensation		(5,417	)		(1,593	)		(3,048	)
Meals and Entertainment Disallowance		524			484			279
Limitation on Officer's Compensation		6,513			3,009			2,568
Valuation Allowance		500			(7,205	)		(4,556	)
Other		123			185			887
Provision for Income Taxes	$	140,298		$	127,053		$	100,847
Effective Tax Rate		23	%		22	%		21	%

Schedule of Components of Deferred Income Taxes

Components of deferred income taxes are as follows:


	March 31,
	2024			2023
	(dollars in thousands)
Items Giving Rise to Deferred Tax Liabilities
Excess Tax Depreciation and Amortization	$	(260,577	)	$	(253,541	)
Investment in Joint Venture Basis Differences		(4,294	)		(8,744	)
Depletable Assets		(7,710	)		(3,876	)
Right-of-Use Assets		(4,774	)		(5,202	)
Inventory		—			(406	)
Other		(2,956	)		(2,908	)
Total Deferred Tax Liabilities	$	(280,311	)	$	(274,677	)
Items Giving Rise to Deferred Tax Assets
Change in Accruals	$	13,313		$	12,886
Bad Debts		1,621			1,662
Long-term Incentive Compensation Plan		3,622			3,515
Credits and Other Carryforwards		11,466			12,995
Lease Liability		6,598			7,647
Inventory		307			—
Pension		1,087			1,128
Subtotal		38,014			39,833
Valuation Allowance		(2,500	)		(2,000	)
Total Deferred Tax Assets	$	35,514		$	37,833

Reconciliation of Consolidated Liability for Gross Unrecognized Tax Benefits

The change in unrecognized tax benefits for the years ended March 31, 2024, 2023, and 2022 was as follows:


	For the Years Ended March 31,
	2024		2023		2022
	(dollars in thousands)
Balance at Beginning of Year	$	1,284	$	1,284	$	1,284
Increase Related to Current Tax Positions		—		—		—
Decrease Related to Current Tax Positions		—		—		—
Payments		—		—		—
	$	1,284	$	1,284	$	1,284

Stock Options Outstanding (Detail)	12 Months Ended
Stock Options Outstanding (Detail)	Mar. 31, 2024 $ / shares shares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Options Outstanding, Number of Shares Outstanding \| shares	252,364
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	5 years 10 months 24 days
Options Outstanding, Weighted-Average Exercise Price	$ 91.04
Options Exercisable , Number of Shares Outstanding \| shares	215,913
Options Exercisable, Weighted-Average Exercise Price	$ 84.24
$59.32 - $81.28 [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	59.32
Range of Exercise Prices, Upper Range	$ 81.28
Options Outstanding, Number of Shares Outstanding \| shares	107,490
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	5 years 7 months 20 days
Options Outstanding, Weighted-Average Exercise Price	$ 62.5
Options Exercisable , Number of Shares Outstanding \| shares	107,490
Options Exercisable, Weighted-Average Exercise Price	$ 62.5
$87.37 - $93.03 [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	91.21
Range of Exercise Prices, Upper Range	$ 106
Options Outstanding, Number of Shares Outstanding \| shares	75,608
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	4 years 3 months 7 days
Options Outstanding, Weighted-Average Exercise Price	$ 94.15
Options Exercisable , Number of Shares Outstanding \| shares	73,750
Options Exercisable, Weighted-Average Exercise Price	$ 94.07
$99.37 - $143.09 [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	118.27
Range of Exercise Prices, Upper Range	$ 190.97
Options Outstanding, Number of Shares Outstanding \| shares	69,266
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	8 years 29 days
Options Outstanding, Weighted-Average Exercise Price	$ 131.95
Options Exercisable , Number of Shares Outstanding \| shares	34,673
Options Exercisable, Weighted-Average Exercise Price	$ 130.74

Weighted-Average Assumptions Used to Value Option Awards (Detail) - Long Term Compensation Plan [Member] - Employee Stock Option	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend Yield	7.50%	0.80%
Expected Volatility	38.80%	38.20%
Risk-Free Interest Rate	3.74%	2.90%
Expected Life	6 years	6 years

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Indebtedness - Long-Term Debt (Parenthetical) (Detail) - 2.500% Senior Unsecured Notes Due 2031 [Member]	12 Months Ended
	Mar. 31, 2024	Jul. 01, 2021
Debt Instrument [Line Items]
Debt instrument, interest rate	2.50%	2.50%
Debt instrument, maturity year	2031

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

PROPERTY, PLANT AND EQUIPMENT (Tables)

12 Months Ended

Mar. 31, 2024

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Cost by major category and Accumulated Depreciation are summarized as follows:


	March 31,
	2024			2023
	(dollars in thousands)
Land and Quarries	$	330,874		$	311,743
Plants		2,501,627			2,423,426
Buildings, Machinery, and Equipment		264,180			226,018
Construction in Progress		68,136			65,455
		3,164,817			3,026,642
Accumulated Depreciation		(1,488,600	)		(1,364,581	)
	$	1,676,217		$	1,662,061

Indebtedness - Additional Information (Detail) $ in Thousands					1 Months Ended	12 Months Ended
	May 05, 2022 USD ($)	Jul. 19, 2021 USD ($)	Jul. 02, 2021 USD ($)	Jul. 01, 2021 USD ($)	May 31, 2022 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)
Debt Instrument [Line Items]
Weighted-average interest rate						6.60%	3.70%	1.50%
Interest rate of debt instrument						6.70%	6.00%
Repayment of Term Loan						$ (10,000)	$ (7,500)	$ (665,000)
Interest coverage ratio			250.00%
Borrowings outstanding under Credit Facility						170,000	157,000
Outstanding borrowings						571,700
Outstanding letters of credit , amount						8,300
Debt instrument, principal amount						$ 1,102,500	$ 1,099,500
Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Unused line of credit commitment fee based on leverage ratio			9.00%
Maximum [Member]
Debt Instrument [Line Items]
Unused line of credit commitment fee based on leverage ratio			22.50%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] \| Minimum [Member] \| Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Variable margin			100.00%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] \| Maximum [Member] \| Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Variable margin			162.50%
NYFRB [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Variable margin			0.00%
NYFRB [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Variable margin			62.50%
Term Loan [Member]
Debt Instrument [Line Items]
Weighted-average interest rate						6.60%	4.40%
Term loan facility, unused borrowing capacity, Amount	$ 200,000
Term loan Maturity Date					May 05, 2027
Debt instrument, principal amount						$ 182,500	$ 192,500
Quarterly principle payments	2,500
Term Loan Agreement [Member]
Debt Instrument [Line Items]
Repayment of Term Loan				$ 665,000
2.500% Senior Unsecured Notes Due 2026
Debt Instrument [Line Items]
Debt issuance costs		$ 6,100
4.500% Senior Unsecured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Repayments of Other Long-term Debt		$ 350,000
Redemption date		Jul. 17, 2021
Termination premium		$ 8,400
Term loan Maturity Date		Jul. 19, 2021
Debt instrument, maturity period		2026-08
2.500% Senior Unsecured Notes Due 2031 [Member]
Debt Instrument [Line Items]
Interest rate of debt instrument				2.60%
Debt instrument, original issue discount				$ 6,300
Interest payment period			10-year
Semi annual basis, treasury rate			20.00%
Percentage of aggregate amount repurchased			101.00%
Credit Facility, termination date			Jul. 01, 2021
Debt instrument, principal amount				$ 750,000		$ 750,000	$ 750,000
Debt instrument, interest rate				2.50%		2.50%
Debt instrument, maturity period			2031-07
2.500% Senior Unsecured Notes Due 2031 [Member] \| Redeemable On or After April 1, 2031 [Member]
Debt Instrument [Line Items]
Percentage of principal amount redeemable			100.00%
Debt instrument, interest rate				2.50%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Borrowings outstanding under Credit Facility						$ 170,000
Outstanding borrowings						$ 571,700
Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Supplementary leverage ratio				0.035
Revolving Credit Facility [Member] \| Swingline Loan [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 25,000
Revolving Credit Facility [Member] \| Unsecured Debt
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 750,000
Revolving Credit Facility [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					$ 200,000
Line of Credit \| Maximum [Member]
Debt Instrument [Line Items]
Amount of increase in borrowing capacity			$ 375,000
Line of Credit \| NYFRB [Member]
Debt Instrument [Line Items]
Variable margin			0.50%
Letter of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				1,125,000
Letter of Credit Facility				$ 40,000
Unused line of credit commitment fee based on leverage ratio						12.50%
Outstanding letters of credit , amount						$ 8,300

Income Taxes - Additional Information (Detail) - USD ($)	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Income Tax [Line Items]
Accrued penalties on uncertain tax position	$ 0	$ 0	$ 0
State Income Tax [Member]
Income Tax [Line Items]
Net operating loss carryforwards	1,600,000	2,300,000
Income tax credit	$ 9,900,000	$ 10,700,000

Income Taxes - Schedule of Components of Deferred Income Taxes (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Excess Tax Depreciation and Amortization	$ (260,577)	$ (253,541)
Investment in Joint Venture Basis Differences	(4,294)	(8,744)
Depletable Assets	(7,710)	(3,876)
Right-of-Use Assets	(4,774)	(5,202)
Inventory	0	(406)
Other	(2,956)	(2,908)
Total Deferred Tax Liabilities	(280,311)	(274,677)
Change in Accruals	13,313	12,886
Bad Debts	1,621	1,662
Long-term Incentive Compensation Plan	3,622	3,515
Credits and Other Carryforwards	11,466	12,995
Lease Liability	6,598	7,647
Inventory	307	0
Pension	1,087	1,128
Subtotal	38,014	39,833
Valuation Allowance	(2,500)	(2,000)
Total Deferred Tax Assets	$ 35,514	$ 37,833

FAIR VALUE OF FINANCIAL INSTRUMENTS

12 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

FAIR VALUE OF FINANCIAL INSTRUMENTS

(G) Fair Value of Financial Instruments


	Fair Value
	(dollars in thousands)
2.500% Senior Unsecured Notes Due 2031	$	628,000

The estimated fair value of our long-term debt was based on publicly quoted prices of these debt instruments (level 1 input). The carrying values of cash and cash equivalents, accounts and notes receivable, accounts payable, and accrued liabilities approximate their fair values at March 31, 2024, due to the short-term maturities of these assets and liabilities. The fair value of our Revolving Credit Facility and Term Loan also approximates its carrying values at March 31, 2024.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

PENSION AND PROFIT SHARING PLANS (Tables)

12 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Schedule of Reconciliation of Benefit Obligations and Fair Values of Plan Assets


	For the Years Ended March 31,
	2024			2023
	(dollars in thousands)
Reconciliation of Benefit Obligations
Benefit Obligation at April 1,	$	29,189		$	33,909
Interest Cost on Projected Benefit Obligation		1,413			1,240
Actuarial Gain		(829	)		(4,509	)
Benefits Paid		(1,643	)		(1,451	)
Benefit Obligation at March 31,	$	28,130		$	29,189
Reconciliation of Fair Value of Plan Assets
Fair Value of Plan Assets at April 1,	$	31,106		$	36,313
Actual Return on Plan Assets		641			(3,756	)
Employer Contributions		20			—
Benefits Paid		(1,643	)		(1,451	)
Fair Value of Plan Assets at March 31,		30,124			31,106
Funded Status
Funded Status at March 31,	$	1,994		$	1,917
Amounts Recognized in the Balance Sheet Include:
Other Assets	$	1,994		$	1,917
Accumulated Other Comprehensive Losses
Net Actuarial Loss		4,454			4,662
Accumulated Other Comprehensive Losses	$	4,454		$	4,662
Tax Impact		(1,081	)		(1,115	)
Accumulated Other Comprehensive Losses, net of tax	$	3,373		$	3,547

Components of Net Periodic Cost

Net periodic pension cost for the fiscal years ended March 31, 2024, 2023, and 2022, included the following components:


	For the Years Ended March 31,
	2024			2023			2022
	(dollars in thousands)
Interest Cost of Projected Benefit Obligation		1,413			1,240			1,167
Expected Return on Plan Assets		(1,512	)		(1,366	)		(1,299	)
Recognized Net Actuarial Loss		250			123			143
Net Periodic Pension Cost	$	151		$	(3	)	$	11

Schedule of Expected Benefit Payments

Expected benefit payments over the next five years, and the following five years under the pension plans are expected to be as follows (dollars in thousands):


Fiscal Years	Total
2025	$	1,843
2026	$	1,874
2027	$	1,951
2028	$	1,988
2029	$	1,962
2030-2034	$	9,853

Schedule of Assumptions Used in Net Periodic Benefit Cost and Benefit Obligations

The following tables set forth the assumptions used in the actuarial calculations of the present value of Net Periodic Benefit Costs and Benefit Obligations:


	March 31,
	2024			2023			2022
Net Periodic Benefit Costs
Discount Rate		4.99	%		3.75	%		3.33	%
Expected Return on Plan Assets		5.00	%		3.85	%		3.50	%
Rate of Compensation Increase	n/a			n/a			n/a


	March 31,
		2024			2023
Benefit Obligations
Discount Rate		5.27	%		4.99	%
Rate of Compensation Increase	n/a			n/a

Schedule of Pension Plans Weighted-Average Asset Allocation and Range of Target Allocation

The pension plans’ approximate weighted-average asset allocation at March 31, 2024 and 2023, and the range of target allocation are as follows:


		Percentage of Plan Assets at March 31,
	Range of Target Allocation	2024			2023
Asset Category
Equity Securities	10 – 20%		—			9	%
Debt Securities	60 – 90%		98	%		89	%
Other	0 – 20%		2	%		2	%
Total			100	%		100	%

Schedule of Fair Values of Defined Benefit Plans

The fair values of our defined benefit plans’ consolidated assets by category as of March 31, 2024 and 2023 were as follows:


	March 31,
	2024		2023
	(dollars in thousands)
Equity Securities	$	—	$	2,878
Fixed Income Securities		29,541		27,811
Cash Equivalents		583		417
Total	$	30,124	$	31,106

Schedule of Fair Values of Defined Benefit Plans Determined Using Fair Value Hierarchy of Inputs

The fair values by category of inputs as of March 31, 2024, were as follows:


	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Asset Categories	(dollars in thousands)
Equity Securities	$	—	$	—	$	—	$	—
Fixed Income Securities		—		29,541		—		29,541
Cash Equivalents		583		—		—		583
	$	583	$	29,541	$	—	$	30,124

The fair values by category of inputs as of March 31, 2023, were as follows:


	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Asset Categories	(dollars in thousands)
Equity Securities	$	—	$	2,878	$	—	$	2,878
Fixed Income Securities		—		27,811		—		27,811
Cash Equivalents		417		—		—		417
	$	417	$	30,689	$	—	$	31,106

Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 477,639	$ 461,540	$ 374,247
Net Actuarial Change in Defined Benefit Plans:
Unrealized (Loss) Gain During the Period, net of tax (benefit) expense of $(24), $(147), and $48	(53)	(465)	161
Amortization of Net Actuarial Gain (Loss), net of tax (expense) benefit of $59, $30, and $39	192	93	104
Comprehensive Earnings	$ 477,778	$ 461,168	$ 374,512

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income (Loss)	$ 477,639	$ 461,540	$ 374,247
Adjustments to Reconcile Net Earnings to Net Cash Provided by Operating Activities, Net of Effect of Noncash Activity:
Depreciation, Depletion, and Amortization	149,832	138,554	128,811
Write-off of debt issuance costs	0	0	6,101
Deferred Income Tax Provision	7,953	4,475	6,383
Stock Compensation Expense	19,900	17,155	14,264
Equity in Earnings of Unconsolidated Joint Venture	(31,581)	(35,474)	(32,488)
Distributions from Joint Venture	7,000	27,000	27,250
Changes in Operating Assets and Liabilities:
Accounts and Notes Receivable	(551)	(12,035)	(29,209)
Inventories	(67,232)	(47,946)	(912)
Accounts Payable and Accrued Liabilities	13,794	(7,797)	27,192
Other Assets	(20,468)	4,955	(1,331)
Income Taxes Receivable	7,652	(8,701)	(3,137)
Net Cash Provided by Operating Activities	563,938	541,726	517,171
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant, and Equipment	(120,305)	(110,143)	(74,121)
Acquisition Spending	(55,053)	(158,451)	0
Proceeds from Sale of Businesses	0	0	0
Net Cash Provided by (Used in) Investing Activities	(175,358)	(268,594)	(74,121)
CASH FLOWS FROM FINANCING ACTIVITIES
Borrowings Under Revolving Credit Facility	13,000	200,000	200,000
Repayment of Borrowings Under Revolving Credit Facility	0	(43,000)	0
Proceeds from 2.500% Senior Unsecured Notes	0	0	743,692
Repayment of 4.500% Senior Unsecured Notes	0	0	(350,000)
Repayment of Term Loan	(10,000)	(7,500)	(665,000)
Dividends Paid to Stockholders	(35,298)	(37,496)	(30,770)
Purchase and Retirement of Common Stock	(343,274)	(387,717)	(589,742)
Proceeds from Stock Option Exercises	17,098	5,418	21,366
Premium Paid on Early Retirement of Senior Notes	0	0	(8,407)
Payment of Debt Issuance Costs	0	(903)	(7,985)
Shares Redeemed to Settle Employee Taxes on Stock Compensation	(10,423)	(6,108)	(5,308)
Net Cash Used in Financing Activities	(368,897)	(277,306)	(692,154)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	19,683	(4,174)	(249,104)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	15,242	19,416	268,520
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 34,925	$ 15,242	$ 19,416

INDEBTEDNESS

12 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

INDEBTEDNESS

(F) Indebtedness

Long-term debt consists of the following:


	As of March 31,
	2024			2023
	(dollars in thousands)
Revolving Credit Facility	$	170,000		$	157,000
2.500% Senior Unsecured Notes Due 2031		750,000			750,000
Term Loan		182,500			192,500
Total Debt		1,102,500			1,099,500
Less: Current Portion of Long-term Debt		(10,000	)		(10,000	)
Less: Unamortized Discount and Debt Issuance Costs		(9,201	)		(10,468	)
Long-term Debt	$	1,083,299		$	1,079,032

The weighted-average interest rate of borrowings under our Revolving Credit Facility during fiscal years 2024, 2023, and 2022 was approximately 6.6%, 3.7%, and 1.5%, respectively. The weighted-average interest rate on our Term Loan was approximately 6.6% and 4.4% during fiscal years 2024 and 2023, respectively. The interest rate on the Revolving Credit Facility and Term Loan was approximately 6.7% and 6.0% at March 31, 2024 and 2023, respectively.

Revolving Credit Facility

We have an unsecured $750.0 million revolving credit facility that was amended on May 5, 2022 (such facility, as amended, the Revolving Credit Facility). The Revolving Credit Facility includes a separate $200.0 million term loan facility (the Term Loan) and also provides the Company the option to increase the borrowing capacity by up to $375.0 million (for a total borrowing capacity of $1,125.0 million, excluding the Term Loan), provided that the existing lenders, or new lenders, agree to such increase. The Revolving Credit Facility includes a $40.0 million letter of credit facility and a swingline loan sub-facility of $25.0 million, and expires on May 5, 2027.

The Revolving Credit Facility contains customary covenants for an unsecured investment-grade facility, including covenants that restrict the Company’s and/or its subsidiaries’ ability to incur additional debt; encumber assets; merge with or transfer or sell assets to other persons; and enter into certain affiliate transactions. The Revolving Credit Facility also requires the Company to maintain at the end of each fiscal quarter a Leverage Ratio of 3.50:1.00 or less and an Interest Coverage Ratio (both ratios, as defined in the Revolving Credit Facility) equal to or greater than 2.50 to 1.00 (collectively, the Financial Covenants).

At the Company’s option, outstanding loans under the Revolving Credit Facility bear interest, at a variable rate equal to either (i) the adjusted term SOFR rate (secured overnight financing rate), plus 10 basis points, plus an agreed spread (ranging from 100 to 162.5 basis points, which is established based on the Company's credit rating); (ii) in respect of any Revolving Loans (until such time as the then-existing Benchmark (as defined in the Revolving Credit Facility) is replaced in accordance with the Revolving Credit Facility), the adjusted daily simple SOFR rate, plus 10 basis points, plus an agreed spread (ranging from 100 to 162.5 basis points, which is established based on the Company's credit rating) or (iii) an Alternate Base Rate (as defined in the Revolving Credit Facility), which is the highest of (a) the Prime Rate (as defined in the Revolving Credit Facility) in effect on any applicable day, (b) the NYFRB Rate (as defined in the Revolving Credit Facility) in effect on any applicable day, plus ½ of 1%, and (c) the Adjusted Term SOFR (as defined in the Revolving Credit Facility) for a one-month interest period on any applicable day, or if such day is not a business day, the immediately preceding business day, plus 1.0%, in each case plus an agreed upon spread (ranging from 0 to 62.5 basis points), which is established quarterly based on the Company's credit rating. The Company is also required to pay a facility fee on unused available borrowings under the Revolving Credit Facility ranging from 9 to 22.5 basis points, which is established based on the Company's then credit rating.

The Company pays each lender a participation fee with respect to such lender’s participation in letters of credit, and the fee accrues at the same Applicable Rate (as defined in the Revolving Credit Facility) used to determine the interest rate applicable to Eurodollar Revolving Loans (as defined in the Revolving Credit Facility), plus a fronting fee for each letter of credit issued by the issuing bank in an amount equal to 12.5 basis points per annum on the daily maximum amount then available to be drawn under such letter of credit. The Company also pays each issuing bank such bank’s standard fees with respect to issuance, amendment or extensions of letters of credit and other processing fees, and other standard costs and charges relating to such issuing bank’s letters of credit from time to time.

There was $170.0 million of outstanding borrowings under the Revolving Credit Facility, plus $8.3 million of outstanding letters of credit as of March 31, 2024, leaving us with $571.7 million of available borrowings under the Revolving Credit Facility, net of outstanding letters of credit. We were in compliance with all covenants at March 31, 2024; therefore, all $571.7 million is available for future borrowings.

Term Loan

On May 5, 2022, we borrowed the $200.0 million Term Loan under the Revolving Credit Facility, and used these proceeds to, among other things, pay down a portion of the Revolving Credit Facility. The Term Loan requires quarterly principal payments of $2.5 million, with any unpaid amounts due upon maturity on May 5, 2027. At the Company’s option, principal amounts outstanding under the Term Loan bear interest as set forth in the Revolving Credit Facility (but not, for the avoidance of doubt, at a daily simple SOFR rate unless and until such time as the then-existing Benchmark [as defined in the Revolving Credit Facility] is replaced in accordance with the Revolving Credit Facility).

2.500% Senior Unsecured Notes Due 2031

On July 1, 2021, we issued $750.0 million aggregate principal amount of 2.500% senior notes due July 2031 (the 2.500% Senior Unsecured Notes). The 2.500% Senior Unsecured Notes are senior unsecured obligations of the Company and are not guaranteed by any of our subsidiaries. The 2.500% Senior Unsecured Notes were issued net of the original issue discount of $6.3 million and have an effective interest rate of approximately 2.6%. The original issue discount is being amortized by the effective interest method over the 10-year term of the notes. The 2.500% Senior Unsecured Notes are redeemable prior to April 1, 2031, at a redemption price equal to 100% of the aggregate principal amount of the 2.500% Senior Unsecured Notes being redeemed, plus the present value of remaining scheduled payments of principal and interest from the applicable redemption date to April 1, 2031, discounted to the redemption date on a semi-annual basis at the Treasury rate plus 20 basis points. The 2.500% Senior Unsecured Notes are redeemable on or after April 1, 2031, at a redemption price equal to 100% of the aggregate principal amount of the 2.500% Senior Unsecured Notes being redeemed, plus accrued and unpaid interest to, but excluding, the applicable redemption date. If we experience certain change of control triggering events, we would be required to offer to repurchase the 2.500% Senior Unsecured Notes at a purchase price equal to 101% of the aggregate principal amount of the 2.500% Senior Unsecured Notes being repurchased, plus accrued and unpaid interest to, but excluding, the applicable redemption date. The indenture governing the 2.500% Senior Unsecured Notes contains certain covenants that limit our ability to create or permit to exist certain liens; enter into sale and leaseback transactions; and consolidate, merge, or transfer all or substantially all of our assets, and provides for certain events of default that, if any occurred, would permit or require the principal of and accrued interest on the 2.500% Senior Unsecured Notes to become or be declared due and payable.

Our maturities of long-term debt during the next five fiscal years are as follows:


Fiscal Year	Amount
2025	$	10,000
2026		10,000
2027		10,000
2028		322,500
2029		—
Thereafter		750,000
Total	$	1,102,500

Retirement of Debt

In connection with the issuance of the 2.500% Senior Unsecured notes, on July 1, 2021, we repaid all outstanding amounts and terminated our $665.0 million term loan credit agreement (the Term Loan Facility). The Term Loan Facility was used to pay a portion of the purchase price for the Kosmos Acquisition, and fees and expenses incurred in connection with the Kosmos Acquisition in March 2020.

Additionally, on July 19, 2021, (the first business day following the redemption date), we redeemed and paid in full all outstanding amounts due under the $350.0 million aggregate principal amount of 4.500% senior notes (4.500% Senior Unsecured Notes) due August 2026, using proceeds from the 2.500% Senior Unsecured Notes, the Revolving Credit Facility and cash on hand. The 4.500% Senior Unsecured Notes redemption price included all of the outstanding principal and accrued interest through the redemption date of July 17, 2021, as well as an early termination premium of approximately $8.4 million. In connection with the termination and repayment of the Term Loan Facility and the redemption of the 4.500% Senior Unsecured Notes, we expensed approximately $6.1 million of related debt issuance costs in July 2021.

Pension and Profit Sharing Plans - Components of Net Periodic Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Retirement Benefits [Abstract]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense	Interest Expense	Interest Expense
Interest Cost of Projected Benefit Obligation	$ 1,413	$ 1,240	$ 1,167
Expected Return on Plan Assets	(1,512)	(1,366)	(1,299)
Recognized Net Actuarial Loss	250	123	143
Net Periodic Pension Cost	$ 151	$ (3)	$ 11

Stock Option Plans - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Aug. 31, 2023	May 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022	Aug. 03, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Reserved future issuance						1,425,000
Number of shares available for future grant			1,411,799
Stock option expense			$ 2.0	$ 3.4	$ 3.4
Aggregate intrinsic value for outstanding options			45.6
Aggregate intrinsic value for exercisable options			40.5
Total intrinsic value of options exercised			18.8	4.4	15.7
Restricted stock or unit expense			$ 17.9	$ 13.7	$ 10.9
Options granted			5,558	56,621	11,316
Long Term Compensation Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of average return on invested capital			20.00%
Long Term Compensation Plan [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of average return on invested capital		10.00%
Long Term Compensation Plan [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of average return on invested capital		20.00%
Performance Vesting Stock Options [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of average return on invested capital			10.00%
Performance Vesting Stock Options [Member] \| Long Term Compensation Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant		2,296
Percentage of average return on invested capital			20.00%
Reduced percentage of shares earned in stock options plan			66.70%
Stock based compensation plan, description			The performance criterion for the Fiscal 2024 Employee Performance Stock Option Award was based upon the achievement of certain levels of return on equity (as defined in the option agreements), ranging from 10% to 20%, from the performance periods described below. All stock options in each performance period will be earned if the return on equity is 20% or greater. If the return on equity is less than 20% but at least 10% in any performance period, the amount of stock options earned in such period will be reduced proportionately using straight-line interpolation, such that approximately 66.7% of the amount of stock options granted will be earned if the return on equity is 10%. If the Company does not achieve a return on equity of at least 10% during any performance period, all stock option awards for the performance period will be forfeited.
Share-based compensation award expiration term		10 years
Performance Vesting Stock Options [Member] \| Long Term Compensation Plan [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of average return on invested capital		10.00%
Performance Vesting Stock Options [Member] \| Long Term Compensation Plan [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of average return on invested capital		20.00%
Time Vesting Stock Options [Member] \| Long Term Compensation Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant		1,914
Share-based compensation vesting period		3 years
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average period of recognition of unrecognized compensation cost				1 year 10 months 24 days
Unrecognized compensation cost			$ 1.7
Employee Stock Option \| Long Term Compensation Plan [Member] \| Members of the Board [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation award expiration term	10 years
Options granted	1,348
Performance Vesting Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant		45,693
Percentage of average return on invested capital			20.00%
Stock based compensation plan, description			The performance criterion for the Fiscal 2024 Employee Restricted Stock Performance Award was based upon the achievement of certain levels of return on equity (as defined in the agreement), ranging from 10% to 20%, for the performance periods described below. All stock options in each performance period will be earned if the return on equity is 20% or greater. If the return on equity is less than 20% but at least 10% in any performance period, the amount of stock options earned in such period will be reduced proportionately using straight-line interpolation, such that approximately 66.7% of the amount of stock options granted will be earned if the return on equity is 10%. If the Company does not achieve a return on equity of at least 10% during any performance period, all awards for the period will be forfeited.
Reduced percentage of restricted shares			66.70%
Performance Vesting Restricted Stock [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of average return on invested capital		10.00%	10.00%
Performance Vesting Restricted Stock [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of average return on invested capital		20.00%
Time Vesting Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant		38,072
Share-based compensation vesting period		3 years	3 years
Time Vesting Restricted Stock [Member] \| Members of the Board [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation vesting period		1 year
Share-based compensation award expiration term		1 year
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant			201,000
Weighted-average period of recognition of unrecognized compensation cost			1 year 4 months 24 days
Unrecognized compensation cost			$ 17.4
Restricted Stock [Member] \| Members of the Board [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant	10,755

Pension and Profit Sharing Plans - Schedule of Fair Values of Defined Benefit Plans (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	$ 30,124	$ 31,106	$ 36,313
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	0	2,878
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	29,541	27,811
Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	$ 583	$ 417

- Definition

+ References + Details

Schedule of Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Inventory [Line Items]
Inventories	$ 373,923	$ 291,882
Raw Materials and Material-in-Progress [Member]
Inventory [Line Items]
Inventories	122,772	96,880
Finished Cement [Member]
Inventory [Line Items]
Inventories	71,396	46,364
Aggregates [Member]
Inventory [Line Items]
Inventories	12,149	8,309
Gypsum Wallboard [Member]
Inventory [Line Items]
Inventories	5,242	4,244
Paperboard [Member]
Inventory [Line Items]
Inventories	14,278	8,651
Repair Parts and Supplies [Member]
Inventory [Line Items]
Inventories	127,511	112,885
Fuel and Coal [Member]
Inventory [Line Items]
Inventories	$ 20,575	$ 14,549