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Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Jun. 30, 2012	Aug. 03, 2012
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2012
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Trading Symbol	EXP
Entity Registrant Name	EAGLE MATERIALS INC
Entity Central Index Key	0000918646
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		45,381,794

Consolidated Statements of Earnings - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Revenues	$ 154,042	$ 119,807
Cost of Goods Sold	131,145	115,434
Gross Profit	22,897	4,373
Equity in Earnings of Unconsolidated Joint Venture	6,468	5,448
Corporate General and Administrative Expense	(5,416)	(4,118)
Other Income (Expense)	(270)	(79)
Interest Expense, Net	(3,765)	(4,585)
Earnings Before Income Taxes	19,914	1,039
Income Taxes	(5,936)	(232)
Net Earnings	$ 13,978	$ 807
EARNINGS PER SHARE
Basic	$ 0.31	$ 0.02
Diluted	$ 0.31	$ 0.02
AVERAGE SHARES OUTSTANDING
Basic	44,670,359	44,180,039
Diluted	45,078,734	44,709,262
CASH DIVIDENDS PER SHARE	$ 0.10	$ 0.10

Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Net Earnings	$ 13,978	$ 807
Change in Funded Status of Pension Plan, net of tax	116
Comprehensive Earnings	$ 14,094	$ 807

- Definition

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References + Details

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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+ Details

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2012	Mar. 31, 2012
Current Assets -
Cash and Cash Equivalents	$ 3,707	$ 6,481
Accounts and Notes Receivable	73,304	56,197
Inventories	114,441	123,606
Income Tax Receivable		1,133
Prepaid and Other Assets	3,366	4,424
Total Current Assets	194,818	191,841
Property, Plant and Equipment -	1,145,195	1,140,744
Less: Accumulated Depreciation	(572,351)	(560,236)
Property, Plant and Equipment, net	572,844	580,508
Notes Receivable	3,360	3,436
Investment in Joint Venture	39,407	38,939
Goodwill and Intangible Assets	150,743	150,902
Other Assets	19,224	19,519
Assets, Total	980,396	985,145
Current Liabilities -
Accounts Payable	34,517	38,747
Accrued Liabilities	30,275	33,619
Income Taxes Payable	8,192
Current Portion of Long-term Debt	4,677	4,677
Total Current Liabilities	77,661	77,043
Long-term Debt	249,259	262,259
Other Long-term Liabilities	39,774	39,467
Deferred Income Taxes	129,760	133,865
Total Liabilities	496,454	512,634
Stockholders' Equity -
Preferred Stock, Par Value $0.01; Authorized 5,000,000 Shares; None Issued
Common Stock, Par Value $0.01; Authorized 100,000,000 Shares; Issued and Outstanding 45,362,170 and 45,269,493 Shares, respectively	454	453
Capital in Excess of Par Value	39,564	37,692
Accumulated Other Comprehensive Losses	(5,400)	(5,516)
Retained Earnings	449,324	439,882
Total Stockholders' Equity	483,942	472,511
Liabilities and Stockholders' Equity, Total	$ 980,396	$ 985,145

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2012	Mar. 31, 2012
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	45,362,170	45,269,493
Common Stock, Outstanding	45,362,170	45,269,493

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net Earnings	$ 13,978	$ 807
Adjustments to Reconcile Net Earnings to Net Cash Provided by Operating Activities -
Depreciation, Depletion and Amortization	12,661	12,320
Deferred Income Tax Provision	(4,174)	(939)
Stock Compensation Expense	1,563	835
Excess Tax Benefits from Share Based Payment Arrangements	(21)	(30)
Equity in Earnings of Unconsolidated Joint Venture	(6,468)	(5,448)
Distributions from Joint Venture	6,000	5,000
Changes in Operating Assets and Liabilities:
Accounts and Notes Receivable	(17,031)	(10,150)
Inventories	9,165	1,113
Accounts Payable and Accrued Liabilities	(6,911)	(5,315)
Other Assets	1,014	1,866
Income Taxes Payable	9,316	1,082
Net Cash Provided by Operating Activities	19,092	1,141
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant and Equipment	(4,685)	(3,812)
Net Cash Used in Investing Activities	(4,685)	(3,812)
CASH FLOWS FROM FINANCING ACTIVITIES
Increase (Decrease) in Credit Facility	(13,000)	9,000
Dividends Paid to Stockholders	(4,521)	(4,526)
Proceeds from Stock Option Exercises	1,177	128
Shares Redeemed to Settle Employee Taxes on Restricted Shares	(858)	(357)
Excess Tax Benefits from Share Based Payment Arrangements	21	30
Net Cash Provided by (Used in) Financing Activities	(17,181)	4,275
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(2,774)	1,604
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	6,481	1,874
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 3,707	$ 3,478

BASIS OF PRESENTATION

3 Months Ended

Jun. 30, 2012

BASIS OF PRESENTATION

(A) BASIS OF PRESENTATION

The accompanying unaudited consolidated financial statements as of and for the three month period ended June 30, 2012 include the accounts of Eagle Materials Inc. and its majority-owned subsidiaries (the “Company”, “us” or “we”) and have been prepared by the Company, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission. These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in our Annual Report on Form 10-K filed with the Securities and Exchange Commission on May 25, 2012.

Certain information and footnote disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations, although we believe that the disclosures are adequate to make the information presented not misleading. In our opinion, all adjustments (consisting solely of normal recurring adjustments) necessary to present fairly the information in the following unaudited consolidated financial statements of the Company have been included. The results of operations for interim periods are not necessarily indicative of the results for the full year.

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

Recent Accounting Pronouncements

There are no recent accounting pronouncements that we expect will materially impact our financial statements during the current fiscal year.

- Definition

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

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+ Details

CASH FLOW INFORMATION - SUPPLEMENTAL	3 Months Ended
CASH FLOW INFORMATION - SUPPLEMENTAL	Jun. 30, 2012
CASH FLOW INFORMATION - SUPPLEMENTAL	(B) CASH FLOW INFORMATION – SUPPLEMENTAL Cash payments made for interest were $6.4 and $8.6 million for the three months periods ended June 30, 2012 and 2011, respectively. Net payments made for federal and state income taxes during the three months ended June 30, 2012 and 2011, were $0.2 and $1.4 million, respectively.

ACCOUNTS AND NOTES RECEIVABLE

3 Months Ended

Jun. 30, 2012

ACCOUNTS AND NOTES RECEIVABLE

(C) ACCOUNTS AND NOTES RECEIVABLE

Accounts and notes receivable have been shown net of the allowance for doubtful accounts of $5.0 million at both June 30, 2012 and March 31, 2012, 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 upon analysis of economic trends in the construction industry, detailed analysis of the expected collectability of accounts receivable that are past due and the expected collectability of overall receivables. We have no significant credit risk concentration among our diversified customer base.

We had notes receivable totaling approximately $4.3 million at June 30, 2012, of which approximately $0.9 million has been classified as current and presented with accounts receivable on the balance sheet. We lend funds to certain companies in the ordinary course of business, and the notes bear interest, on average, at the prime rate plus 1.5%. Remaining unpaid amounts, plus accrued interest, mature on various dates between 2012 and 2017. The notes are collateralized by certain assets of the borrowers, namely property and equipment and are generally payable monthly. We monitor the credit risk of each borrower by focusing on the timeliness of payments, review of credit history and credit metrics and interaction with the borrowers. At June 30, 2012, approximately $0.6 million of our allowance for doubtful accounts is related to our notes receivable.

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

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+ Details

STOCKHOLDERS' EQUITY

3 Months Ended

Jun. 30, 2012

STOCKHOLDERS' EQUITY

(D) STOCKHOLDERS’ EQUITY

A summary of changes in stockholders’ equity follows:


	For the Three Months Ended June 30, 2012 (dollars in thousands)
Common Stock –
Balance at Beginning of Period	$	453
Stock Option Exercises		1

Balance at End of Period		454

Capital in Excess of Par Value –
Balance at Beginning of Period		37,692
Stock Compensation Expense		1,563
Shares Redeemed to Settle Employee Taxes		(858	)
Stock Option Exercises		1,167

Balance at End of Period		39,564

Retained Earnings –
Balance at Beginning of Period		439,882
Dividends Declared to Stockholders		(4,536	)
Net Earnings		13,978

Balance at End of Period		449,324

Accumulated Other Comprehensive Losses –
Balance at Beginning of Period, net of tax		(5,516	)
Pension Plan Actuarial losses		116

Balance at End of Period, net of tax		(5,400	)

Total Stockholders’ Equity	$	483,942

There were no open market share repurchases during the three month period ended June 30, 2012.As of June 30, 2012, we have authorization to purchase an additional 717,300 shares.

- Definition

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

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-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Section B
-Paragraph 7, 11A
-Chapter 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph d
-Article 4

Reference 18: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 20: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 21: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

Reference 22: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 3, 4, 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 23: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

INVENTORIES

3 Months Ended

Jun. 30, 2012

INVENTORIES

(E) INVENTORIES

Inventories are stated at the lower of average cost (including applicable material, labor, depreciation, and plant overhead) or market, and consist of the following:


	As of
	June 30, 2012		March 31, 2012
	(dollars in thousands)
Raw Materials and Material-in-Progress	$	40,509	$	46,336
Finished Cement		7,096		10,391
Gypsum Wallboard		5,895		6,215
Aggregates		14,109		14,155
Paperboard		2,371		2,443
Repair Parts and Supplies		39,882		40,352
Fuel and Coal		4,579		3,714

	$	114,441	$	123,606

ACCRUED EXPENSES

3 Months Ended

Jun. 30, 2012

ACCRUED EXPENSES

(F) ACCRUED EXPENSES

Accrued expenses consist of the following:


	As of
	June 30, 2012		March 31, 2012
	(dollars in thousands)
Payroll and Incentive Compensation	$	5,160	$	7,320
Benefits		9,089		8,583
Interest		2,049		4,904
Insurance		4,724		5,068
Property Taxes		4,380		3,865
Other		4,873		3,879

	$	30,275	$	33,619

SHARE-BASED EMPLOYEE COMPENSATION

3 Months Ended

Jun. 30, 2012

SHARE-BASED EMPLOYEE COMPENSATION

(G) SHARE-BASED EMPLOYEE COMPENSATION

On January 8, 2004, our stockholders approved an incentive plan (the “Plan”) that combined and amended the two previously existing stock option plans. In August 2009, our shareholders approved an amendment to the Plan which, among other things, increased the number of shares available for award under the Plan by 3.0 million shares. Under the terms of the Plan, we can issue equity awards, including stock options, restricted stock units (“RSUs”), restricted stock and stock appreciation rights (collectively, the “Equity Awards”) to employees of the Company and members of the Board of Directors. The Compensation Committee of our Board of Directors specifies the terms for grants of Equity Awards under the Plan.

Long-Term Compensation Plans -

Options. In June 2012, the Compensation Committee of the Board of Directors approved an incentive equity award of an aggregate of 448,833 stock options pursuant to the Plan to certain individuals that vest ratably over a three year period (the “Fiscal 2013 Employee Stock Option Grant”). The options have a term of ten years from the date of grant. In June 2012, we granted 42,336 options to members of the Board of Directors (the “Fiscal 2013 Board of Directors Grant”). Options granted under the Fiscal 2013 Board of Directors Grant vest six months after issuance, in December 2012, and can be exercised from that date until their expiration at the end of ten years. The Fiscal 2013 Employee Stock Option Grant and Fiscal 2013 Board of Directors Grant 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 2013 are as follows:


	Fiscal 2012
Dividend Yield		2.0	%
Expected Volatility		44.0	%
Risk Free Interest Rate		1.3	%
Expected Life		7.9 years

Stock option expense for all outstanding stock option awards totaled approximately $0.5 million and $0.3 million for the three month periods ended June 30, 2012 and 2011, respectively. At June 30, 2012, there was approximately $9.7 million of unrecognized compensation cost related to outstanding stock options, net of estimated forfeitures, which is expected to be recognized over a weighted-average period of 2.6 years.

The following table represents stock option activity for the quarter ended June 30, 2012:


	Number of Shares			Weighted- Average Exercise Price
Outstanding Options at Beginning of Period		3,241,322		$	36.11
Granted		531,179		$	33.66
Exercised		(42,131	)	$	27.93
Cancelled		(42,278	)	$	42.21

Outstanding Options at End of Period		3,688,092		$	35.78

Options Exercisable at End of Period		1,604,458

Weighted-Average Fair Value of Options Granted during the Period	$	12.90

The following table summarizes information about stock options outstanding at June 30, 2012:


	Outstanding Options						Exercisable Options
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
$ 11.56—$ 11.76		88,536		0.87	$	11.74		88,536	$	11.74
$ 23.17—$ 30.74		1,482,846		5.52	$	26.68		1,204,091	$	26.37
$ 33.08—$ 40.78		801,849		7.00	$	35.13		253,970	$	37.97
$ 47.53—$ 62.83		1,314,861		2.03	$	48.05		57,861	$	59.44

		3,688,092		4.48	$	35.78		1,604,458	$	28.59

At June 30, 2012, the aggregate intrinsic value for outstanding options was $5.8 million and the aggregate intrinsic value of exercisable options was $14.0 million. The total intrinsic value of options exercised during the three month period ended June 30, 2012 was approximately $0.3 million.

Restricted Stock Units. Expense related to RSUs was approximately $0.4 million and $0.3 million for the three month periods ended June 30, 2012 and 2011, respectively. At June 30, 2012, there was approximately $1.3 million of unearned compensation from RSUs, net of estimated forfeitures, which will be recognized over a weighted-average period of 1.1 years.

Restricted Stock. In June 2012, the Compensation Committee also approved the granting of an aggregate of 57,443 shares of restricted stock to certain key employees at both the corporate and subsidiary level (the “Fiscal 2013 Employee Restricted Share Award”) that will be earned if our ten year average return on equity exceeds 15% at March 31, 2013. If this criterion is not met, all of the shares will be forfeited. If the criterion is met, restrictions on the shares will lapse ratably over five years, with the first fifth lapsing immediately, and the remaining restrictions lapsing on March 31, 2014 through 2017. The value of the Fiscal 2013 Restricted Share Award, net of estimated forfeitures, is being expensed over a five year period. In June 2012, we granted 16,251 shares of restricted stock to members of the Board of Directors (the “Board of Directors Fiscal 2013 Restricted Stock Award”). Awards issued under the Board of Directors Fiscal 2013 Restricted Stock Award vest upon the retirement of each director, which occurs at the date of the annual shareholders meeting after the director reaches seventy-two years of age.

Expense related to restricted shares was $0.6 million and $0.3 million for the three month period ended June 30, 2012 and 2011, respectively. At June 30, 2012, there was approximately $15.3 million of unearned compensation from restricted stock, net of estimated forfeitures, which will be recognized over a weighted-average period of 4.7 years.

The number of shares available for future grants of stock options, restricted stock units, stock appreciation rights and restricted stock under the Plan was 1,340,269 at June 30, 2012.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

COMPUTATION OF EARNINGS PER SHARE

3 Months Ended

Jun. 30, 2012

COMPUTATION OF EARNINGS PER SHARE

(H) COMPUTATION OF EARNINGS PER SHARE

The calculation of basic and diluted common shares outstanding is as follows:


	For the Three Months Ended June 30,
	2012			2011
Weighted-Average Shares of Common Stock Outstanding		44,670,359			44,180,039
Effect of Dilutive Shares:
Assumed Exercise of Outstanding Dilutive Options		1,146,584			1,265,517
Less Shares Repurchased from Assumed Proceeds of Assumed Exercised Options		(954,464	)		(1,088,803	)
Restricted Shares		216,255			352,509

Weighted-Average Common and Common Equivalent Shares Outstanding		45,078,734			44,709,262

At June 30, 2012 and 2011, 2,318,124 and 2,205,352 stock options, respectively, were excluded from the diluted earnings per share calculation, as their effect was anti-dilutive.

PENSION AND EMPLOYEE BENEFIT PLANS

3 Months Ended

Jun. 30, 2012

PENSION AND EMPLOYEE BENEFIT PLANS

(I) PENSION AND EMPLOYEE BENEFIT PLANS

We sponsor several defined benefit and defined contribution pension plans which together cover substantially all our employees. Benefits paid under the defined benefit plans covering certain hourly employees are based on years of service and the employee’s qualifying compensation over the last few years of employment.

The following table shows the components of net periodic cost for our plans:


	For the Three Months Ended June 30,
	2012			2011
	(dollars in thousands)
Service Cost – Benefits Earned during the Period	$	132		$	139
Interest Cost of Benefit Obligations		268			265
Expected Return on Plan Assets		(342	)		(291	)
Recognized Net Actuarial Loss		177			86
Amortization of Prior-Service Cost		14			20

Net Periodic Pension Cost	$	249		$	219

- Definition

The entire disclosure for pension and other postretirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Implementation Guide (Q and A)
-Number FAS88
-Paragraph 63
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 03-2
-Paragraph 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph q
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph h
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 8
-Subparagraph m
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 158
-Paragraph 7, 21, 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS106-2
-Paragraph 20, 21, 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 30
-Paragraph 26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

INCOME TAXES

3 Months Ended

Jun. 30, 2012

INCOME TAXES

(J) INCOME TAXES

Income taxes for the interim period presented have been included in the accompanying financial statements on the basis of an estimated annual effective tax rate. In addition to the amount of tax resulting from applying the estimated annual effective tax rate to pre-tax income, we will, when appropriate, include certain items treated as discrete events to arrive at an estimated overall tax amount. The effective tax rate for the three months ended June 30, 2012 was approximately 30%, which has increased from the prior year due to the reduction in the impact our depletion deduction caused by increased earnings in fiscal year 2013.

- 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

+ Details

LONG-TERM DEBT

3 Months Ended

Jun. 30, 2012

LONG-TERM DEBT

(K) LONG-TERM DEBT

Long-term debt consists of the following:


	As of
	June 30, 2012			March 31, 2012
	(dollars in thousands)
Credit Facility	$	57,000		$	70,000
Senior Notes		196,936			196,936

Total Debt		253,936			266,936
Less: Current Portion of Long-term Debt		(4,677	)		(4,677	)

Long-term Debt	$	249,259		$	262,259

Credit Facility -

On December 16, 2010, we entered into a $300.0 million credit agreement (“the “Credit Facility”) that expires on December 16, 2015. Borrowings under the Credit Facility are guaranteed by all major operating subsidiaries of the Company. At the option of the Company, outstanding principal amounts on the Credit Facility bear interest at a variable rate equal to (i) LIBOR, plus an agreed margin (ranging from 100 to 225 basis points), which is to be established quarterly based upon the Company’s ratio of consolidated EBITDA, which is defined as earnings before interest, taxes, depreciation and amortization, to its consolidated indebtedness, or (ii) an alternative base rate which is the higher of (a) the prime rate or (b) the federal funds rate plus ¹/₂%, per annum plus an agreed margin (ranging from 0 to 125 basis points). Interest payments are payable monthly or at the end of the LIBOR advance periods, which can be up to a period of six months at the option of the Company. The Credit Facility contains customary covenants that restrict our ability to incur additional debt, encumber our assets, sell assets, make or enter into certain investments, loans or guaranties and enter into sale and leaseback arrangements. The Credit Facility also requires us to maintain a consolidated funded indebtedness ratio (consolidated indebtedness to consolidated earnings before interest, taxes, depreciation, amortization and other non-cash deductions) of 3.5 or less and an interest coverage ratio (consolidated earnings before interest, taxes, depreciation, amortization and other non-cash deductions to interest expense) of at least 2.5. The Credit Facility also limits our ability to make certain restricted payments, such as paying cash dividends; however, there are several exceptions to this restriction, including: (i) the Company may pay cash dividends in an aggregate amount of up to $50.0 million each fiscal year; and (ii) the Company may make restricted payments not otherwise permitted so long as no default would result therefrom and our consolidated funded indebtedness ratio does not exceed 3.0.

The Credit Facility has a $50.0 million letter of credit facility. Under the letter of credit facility, the Company pays a fee at a per annum rate equal to the applicable margin for Eurodollar loans in effect from time to time plus a one-time letter of credit fee in an amount equal to 0.125% of the initial stated amount. At June 30, 2012, we had $9.0 million of letters of credit outstanding.

We had $57.0 million of borrowings outstanding under the Credit Facility at June 30, 2012, and had $234.0 million of unused borrowings under the Credit Facility at June 30, 2012; however, due to certain covenants contained in the Credit Facility, namely the requirement for our consolidated funded indebtedness ratio to remain at 3.50 to 1.0 or less, and other outstanding debt instruments, only approximately $150.0 million in additional borrowings were available to us at June 30, 2012 without exceeding this ratio.

Senior Notes -

We entered into a Note Purchase Agreement on November 15, 2005 (the “2005 Note Purchase Agreement”) related to our sale of $200 million of senior, unsecured notes, designated as Series 2005A Senior Notes (the “Series 2005A Senior Notes”) in a private placement transaction. The Series 2005A Senior Notes, which are guaranteed by substantially all of our subsidiaries, were sold at par and issued in three tranches on November 15, 2005. Since entering the 2005 Note Purchase Agreement, we have repurchased $81.1 million in principal of the Series 2005A Senior Notes. As of June 30, 2012, the amounts outstanding for each of the three tranches are as follows:


	Principal		Maturity Date		Interest Rate
Tranche A	$	4.7 million		November 15, 2012		5.25	%
Tranche B	$	57.0 million		November 15, 2015		5.38	%
Tranche C	$	57.2 million		November 15, 2017		5.48	%

Interest for each tranche of Notes is payable semi-annually on the 15^th day of May and the 15^th day of November of each year until all principal is paid for the respective tranche.

We entered into an additional Note Purchase Agreement on October 2, 2007 (the “2007 Note Purchase Agreement”) related to our sale of $200 million of senior, unsecured notes, designated as Series 2007A Senior Notes (the “Series 2007A Senior Notes”) in a private placement transaction. The Series 2007A Senior Notes, which are guaranteed by substantially all of our subsidiaries, were sold at par and issued in four tranches on October 2, 2007. Since entering into the 2007 Note Purchase Agreement, we have repurchased $122.0 million in principal of the Series 2007A Senior Notes. As of June 30, 2012, the amounts outstanding for each of the four tranches are as follows:


	Principal		Maturity Date		Interest Rate
Tranche A	$	9.5 million		October 2, 2014		6.08	%
Tranche B	$	8.0 million		October 2, 2016		6.27	%
Tranche C	$	24.0 million		October 2, 2017		6.36	%
Tranche D	$	36.5 million		October 2, 2019		6.48	%

Interest for each tranche of Notes is payable semi-annually on the second day of April and the second day of October of each year until all principal is paid for the respective tranche.

Our obligations under the 2005 Note Purchase Agreement and the 2007 Note Purchase Agreement (collectively referred to as the “Note Purchase Agreements”) and the Series 2005A Senior Notes and the Series 2007A Senior Notes (collectively referred to as “the Senior Notes”) are equal in right of payment with all other senior, unsecured debt of the Company, including our debt under the Credit Facility. The Note Purchase Agreements contain customary restrictive covenants, including covenants that place limits on our ability to encumber our assets, to incur additional debt, to sell assets, or to merge or consolidate with third parties, as well as certain cross covenants with the Credit Facility. We were in compliance with all financial ratios and tests at June 30, 2012.

Pursuant to a Subsidiary Guaranty Agreement, substantially all of our subsidiaries have guaranteed the punctual payment of all principal, interest, and Make-Whole Amounts (as defined in the Note Purchase Agreements) on the Senior Notes and the other payment and performance obligations of the Company contained in the Senior Notes and in the Note Purchase Agreements. We are permitted, at our option and without penalty, to prepay from time to time at least 10% of the original aggregate principal amount of the Senior Notes at 100% of the principal amount to be prepaid, together with interest accrued on such amount to be prepaid to the date of payment, plus a Make-Whole Amount. The Make-Whole Amount is computed by discounting the remaining scheduled payments of interest and principal of the Senior Notes being prepaid at a discount rate equal to the sum of 50 basis points and the yield to maturity of U.S. treasury securities having a maturity equal to the remaining average life of the Senior Notes being prepaid.

On August 31, 2011, we entered into an Uncommitted Master Shelf Agreement (the “Shelf Agreement”) with John Hancock Life Insurance Company (U.S.A.) (“Hancock”). The Shelf Agreement provides the terms under which the Company may offer up to $75 million of its senior unsecured notes for purchase by Hancock or Hancock’s affiliates that become bound by the Shelf Agreement (collectively, “Purchasers”). The Shelf Agreement does not obligate the Company to sell, or the Purchasers to buy, any such notes, and has a term of two years. We have not sold any notes pursuant to the Shelf Agreement as of June 30, 2012.

INTEREST EXPENSE

3 Months Ended

Jun. 30, 2012

INTEREST EXPENSE

(L) INTEREST EXPENSE

The following components are included in interest expense, net:


	For the Three Months Ended June 30,
	2012			2011
	(dollars in thousands)
Interest (Income)	$	(1	)	$	(1	)
Interest Expense		3,551			4,475
Interest Expense – Income Taxes		97			—
Other Expenses		118			111

Interest Expense, net	$	3,765		$	4,585

Interest income includes interest on investments of excess cash. Components of interest expense include interest associated with the Senior Notes, the bank credit facilities and commitment fees based on the unused portion of the bank credit facilities. Other expenses include amortization of debt issuance costs, and credit facility costs.

Interest expense – Income Taxes relates to interest accrued on our unrecognized tax benefits, primarily related to the Republic Asset Acquisition. There was no expense recorded in the first quarter of fiscal 2012 as we were in the process of preparing amended state returns, of which several states offered amnesty for certain penalties and interest. Due to the expected amnesty relief, we did not incur any interest during the first quarter of fiscal 2012.

SEGMENT INFORMATION

3 Months Ended

Jun. 30, 2012

SEGMENT INFORMATION

(M) SEGMENT INFORMATION

Operating segments are defined as components of an enterprise that engage in business activities that earn revenues, 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.

We operate in four business segments: Cement, Gypsum Wallboard, Recycled Paperboard, and Concrete and Aggregates, with Gypsum Wallboard and Cement being our principal lines of business. These operations are conducted in the U.S. and include the mining of limestone and the manufacture, production, distribution and sale of Portland cement (a basic construction material which is the essential binding ingredient in concrete), the mining of gypsum and 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). These products are used primarily in commercial and residential construction, public construction projects and projects to build, expand and repair roads and highways.

As further discussed below, we operate four cement plants, eleven cement distribution terminals, five gypsum wallboard plants, including the plant temporarily idled in Bernalillo, N.M., a gypsum wallboard distribution center, a recycled paperboard mill, nine readymix concrete batch plant locations and two aggregates processing plant locations. The principal markets for our cement products are Texas, northern Illinois (including Chicago), the Rocky Mountains, northern Nevada, and northern California. Gypsum wallboard and recycled paperboard are distributed throughout the continental U.S. Concrete and aggregates are sold to local readymix producers and paving contractors in the Austin, Texas area and northern California.

We conduct one of our four cement plant operations, Texas Lehigh Cement Company LP in Buda, Texas, through a Joint Venture. For segment reporting purposes only, we proportionately consolidate our 50% share of the Joint Venture’s revenues and operating earnings, which is consistent with the way management reports the segments within the Company for making operating decisions and assessing performance.

We account for intersegment sales at market prices. The following table sets forth certain financial information relating to our operations by segment:


	For the Three Months
	Ended June 30,
	2012			2011
	(dollars in thousands)
Revenues -
Cement	$	76,024		$	60,144
Gypsum Wallboard		70,220			51,342
Paperboard		30,329			28,676
Concrete and Aggregates		12,877			11,900

Sub-total		189,450			152,062
Less: Intersegment Revenues		(11,701	)		(10,861	)

Net Revenues, including Joint Venture		177,749			141,201
Less: Joint Venture		(23,707	)		(21,394	)

Net Revenues	$	154,042		$	119,807


	For the Three Months
	Ended June 30,
	2012			2011
	(dollars in thousands)
Intersegment Revenues -
Cement	$	567		$	1,039
Paperboard		10,922			9,682
Concrete and Aggregates		212			140

	$	11,701		$	10,861

Cement Sales Volume (M Tons) -
Wholly-owned Operations		621			449
Joint Venture		227			225

		848			674


	For the Three Months
	Ended June 30,
	2012			2011
	(dollars in thousands)
Operating Earnings -
Cement	$	9,866		$	8,788
Gypsum Wallboard		14,022			(1,762	)
Paperboard		5,276			3,030
Concrete and Aggregates		201			(235	)
Other, net		(270	)		(79	)

Sub-total		29,095			9,742
Corporate General and Administrative		(5,416	)		(4,118	)

Earnings Before Interest and Income Taxes		23,679			5,624
Interest Expense, net		(3,765	)		(4,585	)

Earnings Before Income Taxes	$	19,914		$	1,039

Cement Operating Earnings -
Wholly-owned Operations	$	3,398		$	3,340
Joint Venture		6,468			5,448

	$	9,866		$	8,788

Capital Expenditures -
Cement	$	3,996		$	2,120
Gypsum Wallboard		196			1,313
Paperboard		221			118
Aggregates		235			73
Concrete		37			139
Corporate Other		—			49

	$	4,685		$	3,812

Depreciation, Depletion and Amortization
Cement	$	3,809		$	3,730
Gypsum Wallboard		5,277			5,217
Paperboard		2,210			2,125
Aggregates		887			816
Concrete		268			245
Other, net		210			187

	$	12,661		$	12,320


	As of
	June 30, 2012		March 31, 2012
	(dollars in thousands)
Identifiable Assets-
Cement	$	319,051	$	313,559
Gypsum Wallboard		431,281		434,967
Paperboard		136,398		137,483
Aggregates		62,063		49,009
Concrete		12,740		12,031
Corporate and Other		18,863		38,096

	$	980,396	$	985,145

Segment operating earnings, including the proportionately consolidated 50% interest in the revenues and expenses of the Joint Venture, represent revenues, less direct operating expenses, segment depreciation, and segment selling, general and administrative expenses. Corporate assets consist primarily of cash and cash equivalents, general office assets, miscellaneous other assets and unrecognized tax benefits. The segment breakdown of goodwill is as follows:


	As of
	June 30,		March 31,
	2012		2012
	(dollars in thousands)
Cement	$	8,359	$	8,359
Gypsum Wallboard		116,618		116,618
Paperboard		7,538		7,538

	$	132,515	$	132,515

We perform our annual test of impairment on goodwill during the fourth quarter of our fiscal year. Due to the decline in operating earnings of the gypsum wallboard segment from historic high in fiscal 2007, we began performing quarterly impairment tests of our goodwill during fiscal 2009. Based on our cash flows from our gypsum wallboard business for the first three months of fiscal 2013, and projections for the remainder of the year, we believe the conditions in the wallboard industry have improved sufficiently for us to determine that an impairment loss is not likely to occur; therefore no impairment test was performed during the quarter ended June 30, 2012. Unless the current outlook changes, we do not anticipate performing quarterly impairment tests for the quarters ended September 30, 2012 or December 31, 2012.

We temporarily idled our gypsum manufacturing facility in Bernalillo, N.M. beginning in December 2009, due to cyclical low gypsum wallboard demand. The carrying value of the Bernalillo plant and equipment at June 30, 2012 was $3.3 million and $3.7 million, respectively, and we continue to depreciate the assets over their estimated useful life. We currently have a strong market position in New Mexico, and our Albuquerque gypsum wallboard facility is operating at close to capacity. We plan on resuming manufacturing at the Bernalillo facility in the future when demand for our products improves. Costs of maintaining the facility during the idling are not significant, and the facility was generating positive cash flow prior to being idled; therefore, we have determined that the value of the plant and equipment is not impaired. We are not currently considering the permanent closure of the Bernalillo facility. Any decision to permanently close Bernalillo would be the result of future changes in the building materials industry in the southwest United States and Rocky Mountain region, including changes in the production capacity or operations of our competitors, demand for gypsum wallboard or general macro-economic conditions, which we do not foresee at the present time. If we were to permanently close the Bernalillo facility, or if our expectations as to its use changed such that we project the future undiscounted cash flows from its operations would be insufficient to recover its carrying value due to the factors described above, or for any other reason, we would recognize impairment at that time. All of our other wallboard facilities are currently generating positive cash flow from operations.

Summarized financial information for the Joint Venture that is not consolidated is set out below (this summarized financial information includes the total amount for the Joint Venture and not just our 50% interest in those amounts):


	For the Three Months Ended June 30,
	2012		2011
	(dollars in thousands)
Revenues	$	41,196	$	38,170
Gross Margin	$	13,908	$	11,888
Earnings Before Income Taxes	$	12,936	$	10,897


	As of
	June 30, 2012		March 31, 2012
	(dollars in thousands)
Current Assets	$	46,371	$	46,104
Non-Current Assets	$	44,133	$	44,105
Current Liabilities	$	14,952	$	15,719

- 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.

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+ Details

COMMITMENTS AND CONTINGENCIES

3 Months Ended

Jun. 30, 2012

COMMITMENTS AND CONTINGENCIES

(N) COMMITMENTS AND CONTINGENCIES

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 and auto and general liability self-insurance. At June 30, 2012, we had contingent liabilities under these outstanding letters of credit of approximately $9.0 million.

The following table compares insurance accruals and payments for our operations:


	As of and for the Three Months Ended June 30,
	2012			2011
	(dollars in thousands)
Accrual Balances at Beginning of Period	$	5,068		$	6,639
Insurance Expense Accrued		659			966
Payments		(1,003	)		(1,341	)

Accrual Balance at End of Period	$	4,724		$	6,264

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 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, and other commercial contractual relationships; construction contracts and financial matters. While the maximum amount to which the Company 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 our consolidated financial position, results of operations or cash flows. We currently have no outstanding guarantees.

We are currently contingently liable for performance under $9.5 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 past experience, no material claims have been made against these financial instruments.

The Internal Revenue Service (the “IRS”) completed the examination of our federal income tax returns for all of the fiscal years ended March 31, 2001 through 2006. The IRS issued Exam Reports and Notices of Proposed Adjustment on November 9, 2007 for the examination of the 2001, 2002 and 2003 tax years, and on February 5, 2010 for the examination of the 2004, 2005 and 2006 tax years, in which it proposed to deny certain depreciation deductions claimed by us with respect to assets acquired by us from Republic Group LLC in November 2000 (the “Republic Assets”). The examination of our federal income tax returns for fiscal years ended March 31, 2007 through March 31, 2011 is currently in progress.

In June 2010, we received a Notice of Deficiency (“Notice”) of $71.5 million of taxes and penalties for the fiscal years ended March 31, 2001 through 2006, inclusive, related to the IRS audit of the Republic Asset Acquisition. The Notice was in substantial agreement with our financial accruals; including interest. The total amount related to the Notice, including interest, was approximately $98.7 million, of which $75 million had previously been deposited with the IRS. We deposited the remaining $23.7 million with the IRS in July 2010 and asked the IRS to apply all $98.7 million of deposits to the payment of the tax, penalties and interest. Subsequent review of the IRS interest billing produced a refund of $0.8 million reducing the net outlay to $97.9 million. Refund claims were filed with the IRS in October 2010 to recover all $97.9 million, plus interest, and we filed a lawsuit in May 2011 in Federal District Court to recover the requested refunds.

In the event we reach a settlement through negotiation or in the courts, we will reverse any accrued taxes, interest and penalties in excess of the negotiated settlement through the Consolidated Statement of Earnings. At this time, we are unable to predict with certainty the ultimate outcome or how much of the amounts paid for tax, interest, and penalties to the IRS and state taxing authorities will be recovered, if any.

At March 31, 2012, we were involved in a pending lawsuit in California state court which was filed by the same mining company which filed the arbitration proceeding described in the March 31, 2012 Form 10-K. This lawsuit was based on the same facts and circumstances which were subject to the adverse arbitration ruling in January 2012. The pending lawsuit was dismissed with prejudice during the quarter ended June 30, 2012, with no additional loss to the Company.

- Definition

The entire disclosure for commitments and contingencies.

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+ Details

FAIR VALUE OF FINANCIAL INSTRUMENTS

3 Months Ended

Jun. 30, 2012

FAIR VALUE OF FINANCIAL INSTRUMENTS

(O) FAIR VALUE OF FINANCIAL INSTRUMENTS

The fair value of our long-term debt has been estimated based upon our current incremental borrowing rates for similar types of borrowing arrangements. The fair value of our Senior Notes at June 30, 2012 is as follows:


	Fair Value
	(dollars in thousands)
Series 2005A Tranche A	$	4,730
Series 2005A Tranche B		58,756
Series 2005A Tranche C		58,410
Series 2007A Tranche A		9,935
Series 2007A Tranche B		8,533
Series 2007A Tranche C		25,500
Series 2007A Tranche D		38,818

The estimated fair value of our long-term debt was based on quoted prices of similar debt instruments with similar terms that are publicly traded (level 2 input). The carrying values of cash and cash equivalents, accounts and notes receivable, accounts payable and accrued liabilities approximate their fair values due to the short-term maturities of these assets and liabilities. The fair value of our Credit Facility also approximates its carrying value at June 30, 2012.

- 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.

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-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15A
-Subparagraph a-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15C, 15D
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32, 33, 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 3, 10, 14, 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

STOCKHOLDERS' EQUITY (Tables)

3 Months Ended

Jun. 30, 2012

Summary of Changes in Stockholders' Equity

A summary of changes in stockholders’ equity follows:


	For the Three Months Ended June 30, 2012 (dollars in thousands)
Common Stock –
Balance at Beginning of Period	$	453
Stock Option Exercises		1

Balance at End of Period		454

Capital in Excess of Par Value –
Balance at Beginning of Period		37,692
Stock Compensation Expense		1,563
Shares Redeemed to Settle Employee Taxes		(858	)
Stock Option Exercises		1,167

Balance at End of Period		39,564

Retained Earnings –
Balance at Beginning of Period		439,882
Dividends Declared to Stockholders		(4,536	)
Net Earnings		13,978

Balance at End of Period		449,324

Accumulated Other Comprehensive Losses –
Balance at Beginning of Period, net of tax		(5,516	)
Pension Plan Actuarial losses		116

Balance at End of Period, net of tax		(5,400	)

Total Stockholders’ Equity	$	483,942

INVENTORIES (Tables)

3 Months Ended

Jun. 30, 2012

Inventories Stated at Lower of Average Cost or Market

Inventories are stated at the lower of average cost (including applicable material, labor, depreciation, and plant overhead) or market, and consist of the following:


	As of
	June 30, 2012		March 31, 2012
	(dollars in thousands)
Raw Materials and Material-in-Progress	$	40,509	$	46,336
Finished Cement		7,096		10,391
Gypsum Wallboard		5,895		6,215
Aggregates		14,109		14,155
Paperboard		2,371		2,443
Repair Parts and Supplies		39,882		40,352
Fuel and Coal		4,579		3,714

	$	114,441	$	123,606

ACCRUED EXPENSES (Tables)

3 Months Ended

Jun. 30, 2012

Accrued Expenses

Accrued expenses consist of the following:


	As of
	June 30, 2012		March 31, 2012
	(dollars in thousands)
Payroll and Incentive Compensation	$	5,160	$	7,320
Benefits		9,089		8,583
Interest		2,049		4,904
Insurance		4,724		5,068
Property Taxes		4,380		3,865
Other		4,873		3,879

	$	30,275	$	33,619

SHARE-BASED EMPLOYEE COMPENSATION (Tables)

3 Months Ended

Jun. 30, 2012

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 2013 are as follows:


	Fiscal 2012
Dividend Yield		2.0	%
Expected Volatility		44.0	%
Risk Free Interest Rate		1.3	%
Expected Life		7.9 years

Stock Option Activity

The following table represents stock option activity for the quarter ended June 30, 2012:


	Number of Shares			Weighted- Average Exercise Price
Outstanding Options at Beginning of Period		3,241,322		$	36.11
Granted		531,179		$	33.66
Exercised		(42,131	)	$	27.93
Cancelled		(42,278	)	$	42.21

Outstanding Options at End of Period		3,688,092		$	35.78

Options Exercisable at End of Period		1,604,458

Weighted-Average Fair Value of Options Granted during the Period	$	12.90

Stock Options Outstanding

The following table summarizes information about stock options outstanding at June 30, 2012:


	Outstanding Options						Exercisable Options
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
$ 11.56—$ 11.76		88,536		0.87	$	11.74		88,536	$	11.74
$ 23.17—$ 30.74		1,482,846		5.52	$	26.68		1,204,091	$	26.37
$ 33.08—$ 40.78		801,849		7.00	$	35.13		253,970	$	37.97
$ 47.53—$ 62.83		1,314,861		2.03	$	48.05		57,861	$	59.44

		3,688,092		4.48	$	35.78		1,604,458	$	28.59

COMPUTATION OF EARNINGS PER SHARE (Tables)

3 Months Ended

Jun. 30, 2012

Calculation of Basic and Diluted Common Shares Outstanding

The calculation of basic and diluted common shares outstanding is as follows:


	For the Three Months Ended June 30,
	2012			2011
Weighted-Average Shares of Common Stock Outstanding		44,670,359			44,180,039
Effect of Dilutive Shares:
Assumed Exercise of Outstanding Dilutive Options		1,146,584			1,265,517
Less Shares Repurchased from Assumed Proceeds of Assumed Exercised Options		(954,464	)		(1,088,803	)
Restricted Shares		216,255			352,509

Weighted-Average Common and Common Equivalent Shares Outstanding		45,078,734			44,709,262

PENSION AND EMPLOYEE BENEFIT PLANS (Tables)

3 Months Ended

Jun. 30, 2012

Components of Net Periodic Cost

The following table shows the components of net periodic cost for our plans:


	For the Three Months Ended June 30,
	2012			2011
	(dollars in thousands)
Service Cost – Benefits Earned during the Period	$	132		$	139
Interest Cost of Benefit Obligations		268			265
Expected Return on Plan Assets		(342	)		(291	)
Recognized Net Actuarial Loss		177			86
Amortization of Prior-Service Cost		14			20

Net Periodic Pension Cost	$	249		$	219

LONG-TERM DEBT (Tables)

3 Months Ended

Jun. 30, 2012

Long-Term Debt

Long-term debt consists of the following:


	As of
	June 30, 2012			March 31, 2012
	(dollars in thousands)
Credit Facility	$	57,000		$	70,000
Senior Notes		196,936			196,936

Total Debt		253,936			266,936
Less: Current Portion of Long-term Debt		(4,677	)		(4,677	)

Long-term Debt	$	249,259		$	262,259

2005 Note Purchase Agreement

Amount Outstanding of Tranches

As of June 30, 2012, the amounts outstanding for each of the three tranches are as follows:


	Principal		Maturity Date		Interest Rate
Tranche A	$	4.7 million		November 15, 2012		5.25	%
Tranche B	$	57.0 million		November 15, 2015		5.38	%
Tranche C	$	57.2 million		November 15, 2017		5.48	%

2007 Note Purchase Agreement

Amount Outstanding of Tranches

As of June 30, 2012, the amounts outstanding for each of the four tranches are as follows:


	Principal		Maturity Date		Interest Rate
Tranche A	$	9.5 million		October 2, 2014		6.08	%
Tranche B	$	8.0 million		October 2, 2016		6.27	%
Tranche C	$	24.0 million		October 2, 2017		6.36	%
Tranche D	$	36.5 million		October 2, 2019		6.48	%

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

+ Details

INTEREST EXPENSE (Tables)

3 Months Ended

Jun. 30, 2012

Interest Expense

The following components are included in interest expense, net:


	For the Three Months Ended June 30,
	2012			2011
	(dollars in thousands)
Interest (Income)	$	(1	)	$	(1	)
Interest Expense		3,551			4,475
Interest Expense – Income Taxes		97			—
Other Expenses		118			111

Interest Expense, net	$	3,765		$	4,585

SEGMENT INFORMATION (Tables)

3 Months Ended

Jun. 30, 2012

Financial Information Related to Operations by Segment

We account for intersegment sales at market prices. The following table sets forth certain financial information relating to our operations by segment:


	For the Three Months
	Ended June 30,
	2012			2011
	(dollars in thousands)
Revenues -
Cement	$	76,024		$	60,144
Gypsum Wallboard		70,220			51,342
Paperboard		30,329			28,676
Concrete and Aggregates		12,877			11,900

Sub-total		189,450			152,062
Less: Intersegment Revenues		(11,701	)		(10,861	)

Net Revenues, including Joint Venture		177,749			141,201
Less: Joint Venture		(23,707	)		(21,394	)

Net Revenues	$	154,042		$	119,807


	For the Three Months
	Ended June 30,
	2012			2011
	(dollars in thousands)
Intersegment Revenues -
Cement	$	567		$	1,039
Paperboard		10,922			9,682
Concrete and Aggregates		212			140

	$	11,701		$	10,861

Cement Sales Volume (M Tons) -
Wholly-owned Operations		621			449
Joint Venture		227			225

		848			674


	For the Three Months
	Ended June 30,
	2012			2011
	(dollars in thousands)
Operating Earnings -
Cement	$	9,866		$	8,788
Gypsum Wallboard		14,022			(1,762	)
Paperboard		5,276			3,030
Concrete and Aggregates		201			(235	)
Other, net		(270	)		(79	)

Sub-total		29,095			9,742
Corporate General and Administrative		(5,416	)		(4,118	)

Earnings Before Interest and Income Taxes		23,679			5,624
Interest Expense, net		(3,765	)		(4,585	)

Earnings Before Income Taxes	$	19,914		$	1,039

Cement Operating Earnings -
Wholly-owned Operations	$	3,398		$	3,340
Joint Venture		6,468			5,448

	$	9,866		$	8,788

Capital Expenditures -
Cement	$	3,996		$	2,120
Gypsum Wallboard		196			1,313
Paperboard		221			118
Aggregates		235			73
Concrete		37			139
Corporate Other		—			49

	$	4,685		$	3,812

Depreciation, Depletion and Amortization
Cement	$	3,809		$	3,730
Gypsum Wallboard		5,277			5,217
Paperboard		2,210			2,125
Aggregates		887			816
Concrete		268			245
Other, net		210			187

	$	12,661		$	12,320


	As of
	June 30, 2012		March 31, 2012
	(dollars in thousands)
Identifiable Assets-
Cement	$	319,051	$	313,559
Gypsum Wallboard		431,281		434,967
Paperboard		136,398		137,483
Aggregates		62,063		49,009
Concrete		12,740		12,031
Corporate and Other		18,863		38,096

	$	980,396	$	985,145

Segment Breakdown of Goodwill

The segment breakdown of goodwill is as follows:


	As of
	June 30,		March 31,
	2012		2012
	(dollars in thousands)
Cement	$	8,359	$	8,359
Gypsum Wallboard		116,618		116,618
Paperboard		7,538		7,538

	$	132,515	$	132,515

Summarized Financial Information for Joint Venture that is Not Consolidated


	For the Three Months Ended June 30,
	2012		2011
	(dollars in thousands)
Revenues	$	41,196	$	38,170
Gross Margin	$	13,908	$	11,888
Earnings Before Income Taxes	$	12,936	$	10,897


	As of
	June 30, 2012		March 31, 2012
	(dollars in thousands)
Current Assets	$	46,371	$	46,104
Non-Current Assets	$	44,133	$	44,105
Current Liabilities	$	14,952	$	15,719

- Definition

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

+ References + Details

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References + Details

COMMITMENTS AND CONTINGENCIES (Tables)

3 Months Ended

Jun. 30, 2012

Insurance Accruals and Payments

The following table compares insurance accruals and payments for our operations:


	As of and for the Three Months Ended June 30,
	2012			2011
	(dollars in thousands)
Accrual Balances at Beginning of Period	$	5,068		$	6,639
Insurance Expense Accrued		659			966
Payments		(1,003	)		(1,341	)

Accrual Balance at End of Period	$	4,724		$	6,264

FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

3 Months Ended

Jun. 30, 2012

Fair Value of Senior Notes

The fair value of our Senior Notes at June 30, 2012 is as follows:


	Fair Value
	(dollars in thousands)
Series 2005A Tranche A	$	4,730
Series 2005A Tranche B		58,756
Series 2005A Tranche C		58,410
Series 2007A Tranche A		9,935
Series 2007A Tranche B		8,533
Series 2007A Tranche C		25,500
Series 2007A Tranche D		38,818

Cash Flow Information - Supplemental - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash Flow Supplemental Disclosures [Line Items]
Cash payments made for interest	$ 6.4	$ 8.6
Net payments made for federal and state income taxes	$ 0.2	$ 1.4

Accounts and Notes Receivable - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2012	Mar. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for doubtful accounts	$ 5.0	$ 5.0
Notes receivable, total	4.3
Note receivable , current	$ 0.9
Notes receivable interest rate over prime rate	1.50%
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable, maturity year	2012
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable, maturity year	2017
Notes Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for doubtful accounts	$ 0.6

- Definition

An amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money within one year from the balance sheet date (or the normal operating cycle, whichever is longer), net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

+ References + Details

Summary of Changes in Stockholders' Equity (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Stockholders Equity Note [Line Items]
Balance at Beginning of Period	$ 472,511
Net Earnings	13,978	$ 807
Balance at End of Period	483,942
Common Stock
Stockholders Equity Note [Line Items]
Balance at Beginning of Period	453
Stock Option Exercises	1
Balance at End of Period	454
Capital in Excess of Par Value
Stockholders Equity Note [Line Items]
Balance at Beginning of Period	37,692
Stock Compensation Expense	1,563
Shares Redeemed to Settle Employee Taxes	(858)
Stock Option Exercises	1,167
Balance at End of Period	39,564
Retained Earnings
Stockholders Equity Note [Line Items]
Balance at Beginning of Period	439,882
Dividends Declared to Stockholders	(4,536)
Net Earnings	13,978
Balance at End of Period	449,324
Accumulated Other Comprehensive Losses
Stockholders Equity Note [Line Items]
Balance at Beginning of Period	(5,516)
Pension Plan Actuarial losses	116
Balance at End of Period	$ (5,400)

Stockholders' Equity - Additional Information (Detail)	Jun. 30, 2012 shares
Stockholders Equity Note [Line Items]
Number of additional shares authorized to be purchased	717,300

Inventories Stated at Lower of Average Cost or Market (Detail) - USD ($) $ in Thousands	Jun. 30, 2012	Mar. 31, 2012
Inventory Disclosure [Line Items]
Inventories	$ 114,441	$ 123,606
Raw Materials and Material-in-Progress
Inventory Disclosure [Line Items]
Inventories	40,509	46,336
Finished Cement
Inventory Disclosure [Line Items]
Inventories	7,096	10,391
Gypsum Wallboard
Inventory Disclosure [Line Items]
Inventories	5,895	6,215
Aggregates
Inventory Disclosure [Line Items]
Inventories	14,109	14,155
Paperboard
Inventory Disclosure [Line Items]
Inventories	2,371	2,443
Repair Parts and Supplies
Inventory Disclosure [Line Items]
Inventories	39,882	40,352
Fuel and Coal
Inventory Disclosure [Line Items]
Inventories	$ 4,579	$ 3,714

Accrued Expenses (Detail) - USD ($) $ in Thousands	Jun. 30, 2012	Mar. 31, 2012
Accounts Payable and Accrued Liabilities [Line Items]
Payroll and Incentive Compensation	$ 5,160	$ 7,320
Benefits	9,089	8,583
Interest	2,049	4,904
Insurance	4,724	5,068
Property Taxes	4,380	3,865
Other	4,873	3,879
Accrued expenses, total	$ 30,275	$ 33,619

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References + Details

- Definition

Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References + Details

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverage's to employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References + Details

- Definition

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References + Details

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References + Details

Share Based Employee Compensation - Additional Information (Detail) $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 08, 2004 OptionPlan	Jun. 30, 2012 USD ($) Year shares	Jun. 30, 2011 USD ($)	Mar. 31, 2012	Aug. 31, 2009 shares
Share Based Employee Compensation [Line Items]
Number of shares available future grant \| shares		1,340,269			3,000,000
Existing stock option plans \| OptionPlan	2
Number of Shares granted \| shares		531,179
Stock option expense		$ 0.5	$ 0.3
Unrecognized compensation cost, stock option		9.7
Aggregate intrinsic value for outstanding options		5.8
Aggregate intrinsic value of exercisable options		14.0
Total intrinsic value of options exercised		$ 0.3
Fiscal 2013 Employee Stock Option Gran
Share Based Employee Compensation [Line Items]
Number of Shares granted \| shares		448,833
Share-based compensation vesting period		3 years
Share-based compensation award expiration term		10 years
Fiscal 2013 Board of Directors Grant
Share Based Employee Compensation [Line Items]
Number of Shares granted \| shares		42,336
Share-based compensation vesting period		6 months
Share-based compensation award expiration term		10 years
Stock Options
Share Based Employee Compensation [Line Items]
Weighted-average period of recognition of unrecognized compensation cost		2 years 219 days
Restricted Stock Units (RSUs)
Share Based Employee Compensation [Line Items]
Weighted-average period of recognition of unrecognized compensation cost		1 year 37 days
Restricted stock or unit expense		$ 0.4	0.3
Unrecognized compensation cost		$ 1.3
Restricted Stock
Share Based Employee Compensation [Line Items]
Share-based compensation vesting period				5 years
Weighted-average period of recognition of unrecognized compensation cost		4 years 256 days
Restricted stock or unit expense		$ 0.6	$ 0.3
Unrecognized compensation cost		$ 15.3
Number of shares granted \| shares		57,443
Percentage of average return on invested capital				15.00%
Period of average return on invested capital exceeded target				10 years
Restricted Stock \| Minimum
Share Based Employee Compensation [Line Items]
Share-based compensation vesting date				Mar. 31, 2014
Restricted Stock \| Maximum
Share Based Employee Compensation [Line Items]
Share-based compensation vesting date				Mar. 31, 2017
Restricted Stock \| Board of Directors
Share Based Employee Compensation [Line Items]
Number of shares granted \| shares		16,251
Directors retirement age \| Year		72

Weighted Average Assumptions used to Value Option Awards (Detail)	12 Months Ended
	Mar. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend Yield	2.00%
Expected Volatility	44.00%
Risk Free Interest Rate	1.30%
Expected Life	7 years 329 days

Stock Option Activity (Detail)	3 Months Ended
Stock Option Activity (Detail)	Jun. 30, 2012 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding Options at Beginning of Period \| shares	3,241,322
Number of Shares, Granted \| shares	531,179
Number of Shares, Exercised \| shares	(42,131)
Number of Shares, Cancelled \| shares	(42,278)
Number of Shares, Outstanding Options at End of Period \| shares	3,688,092
Number of Shares, Options Exercisable at End of Period \| shares	1,604,458
Weighted Average Exercise Price, Weighted Average Fair Value of Options Granted during the Period \| $ / shares	$ 12.90
Weighted-Average Exercise Price, Outstanding Options at Beginning of Period \| $ / shares	36.11
Weighted-Average Exercise Price, Granted \| $ / shares	33.66
Weighted-Average Exercise Price, Exercised \| $ / shares	27.93
Weighted-Average Exercise Price, Cancelled \| $ / shares	42.21
Weighted-Average Exercise Price, Outstanding Options at End of Period \| $ / shares	$ 35.78

Stock Option Outstanding (Detail)	3 Months Ended
Stock Option Outstanding (Detail)	Jun. 30, 2012 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares Outstanding \| shares	3,688,092
Options Outstanding, Weighted Average Remaining Contractual Life	4 years 175 days
Options Outstanding, Weighted Average Exercise Price	$ 35.78
Options Exercisable, Number of Shares Outstanding \| shares	1,604,458
Options Exercisable, Weighted Average Exercise Price	$ 28.59
$ 11.56 - $ 11.76
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	11.56
Range of Exercise Prices, Upper Range	$ 11.76
Options Outstanding, Number of Shares Outstanding \| shares	88,536
Options Outstanding, Weighted Average Remaining Contractual Life	317 days
Options Outstanding, Weighted Average Exercise Price	$ 11.74
Options Exercisable, Number of Shares Outstanding \| shares	88,536
Options Exercisable, Weighted Average Exercise Price	$ 11.74
$ 23.17 - $ 30.74
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	23.17
Range of Exercise Prices, Upper Range	$ 30.74
Options Outstanding, Number of Shares Outstanding \| shares	1,482,846
Options Outstanding, Weighted Average Remaining Contractual Life	5 years 190 days
Options Outstanding, Weighted Average Exercise Price	$ 26.68
Options Exercisable, Number of Shares Outstanding \| shares	1,204,091
Options Exercisable, Weighted Average Exercise Price	$ 26.37
$ 33.08 - $ 40.78
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	33.08
Range of Exercise Prices, Upper Range	$ 40.78
Options Outstanding, Number of Shares Outstanding \| shares	801,849
Options Outstanding, Weighted Average Remaining Contractual Life	7 years
Options Outstanding, Weighted Average Exercise Price	$ 35.13
Options Exercisable, Number of Shares Outstanding \| shares	253,970
Options Exercisable, Weighted Average Exercise Price	$ 37.97
$ 47.53 - $ 62.83
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	47.53
Range of Exercise Prices, Upper Range	$ 62.83
Options Outstanding, Number of Shares Outstanding \| shares	1,314,861
Options Outstanding, Weighted Average Remaining Contractual Life	2 years 11 days
Options Outstanding, Weighted Average Exercise Price	$ 48.05
Options Exercisable, Number of Shares Outstanding \| shares	57,861
Options Exercisable, Weighted Average Exercise Price	$ 59.44

Calculation of Basic and Diluted Common Shares Outstanding (Detail) - shares	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Weighted-Average Shares of Common Stock Outstanding	44,670,359	44,180,039
Assumed Exercise of Outstanding Dilutive Options	1,146,584	1,265,517
Less Shares Repurchased from Assumed Proceeds of Assumed Exercised Options	(954,464)	(1,088,803)
Restricted Shares	216,255	352,509
Weighted-Average Common and Common Equivalent Shares Outstanding	45,078,734	44,709,262

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References + Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Weighted-Average Number of Common Shares Outstanding
-URI http://asc.fasb.org/extlink&oid=6528421

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Computation of Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock option excluded from diluted earnings per share calculation	2,318,124	2,205,352

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Components of Net Periodic Cost (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Defined Benefit Plan Disclosure [Line Items]
Service Cost - Benefits Earned during the Period	$ 132	$ 139
Interest Cost of Benefit Obligations	268	265
Expected Return on Plan Assets	(342)	(291)
Recognized Net Actuarial Loss	177	86
Amortization of Prior-Service Cost	14	20
Net Periodic Pension Cost	$ 249	$ 219

- Definition

An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Glossary Expected Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512136

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 60
-Glossary Expected Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512171

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)(3)
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph h
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

+ References + Details

- Definition

The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Service Cost (Component of Net Periodic Pension Cost)
-URI http://asc.fasb.org/extlink&oid=6525008

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a, h
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Income Taxes - Additional Information (Detail)	3 Months Ended
Income Taxes - Additional Information (Detail)	Jun. 30, 2012
Income Taxes [Line Items]
Effective tax rate	30.00%

Long-Term Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2012	Mar. 31, 2012
Debt Instrument [Line Items]
Debt	$ 253,936	$ 266,936
Less: Current Portion of Long-term Debt	(4,677)	(4,677)
Long-term Debt	249,259	262,259
Credit Facility
Debt Instrument [Line Items]
Debt	57,000	70,000
Senior Notes
Debt Instrument [Line Items]
Debt	$ 196,936	$ 196,936

Long-Term Debt - Additional Information (Detail) $ in Millions	1 Months Ended	3 Months Ended	57 Months Ended	80 Months Ended
	Dec. 16, 2010 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2012 USD ($)	Aug. 31, 2011 USD ($)	Oct. 02, 2007 USD ($)	Nov. 15, 2005 USD ($)
Debt Instrument [Line Items]
Letter of credit facility		$ 50.0	$ 50.0	$ 50.0
Bank credit facility, one-time fee	0.125%
Letters of credit outstanding, amount		9.0	9.0	9.0
Borrowings outstanding under Credit Facility		57.0	57.0	57.0
Bank credit facility, borrowings available		234.0	234.0	234.0
Available additional borrowings		$ 150.0
Senior notes, permitted minimum aggregate principal amount prepayment without penalty		10.00%
Senior notes, calculation of Make-Whole amount, description		The Make-Whole Amount is computed by discounting the remaining scheduled payments of interest and principal of the Senior Notes being prepaid at a discount rate equal to the sum of 50 basis points and the yield to maturity of U.S. treasury securities having a maturity equal to the remaining average life of the Senior Notes being prepaid.
Discount on senior notes principal and interest		0.50%
Credit Facility
Debt Instrument [Line Items]
Credit facility, principal balance	$ 300.0
Credit facility, maturity date	Dec. 16, 2015
Credit facility, interest rate description	At the option of the Company, outstanding principal amounts on the Credit Facility bear interest at a variable rate equal to (i) LIBOR, plus an agreed margin (ranging from 100 to 225 basis points), which is to be established quarterly based upon the Company’s ratio of consolidated EBITDA, which is defined as earnings before interest, taxes, depreciation and amortization, to its consolidated indebtedness, or (ii) an alternative base rate which is the higher of (a) the prime rate or (b) the federal funds rate plus 1/2%, per annum plus an agreed margin (ranging from 0 to 125 basis points).
Consolidated funded indebtedness ratio	3.5 or less
Restricted payments maximum amount allowed for cash dividend	$ 50.0
Restricted payments maximum consolidated funded indebtedness ratio	3.0
Credit Facility \| Minimum
Debt Instrument [Line Items]
Interest coverage ratio	2.5
Credit Facility \| Federal Funds Rate \| Minimum
Debt Instrument [Line Items]
Variable margin	0.00%
Credit Facility \| Federal Funds Rate \| Maximum
Debt Instrument [Line Items]
Variable margin	1.25%
Credit Facility \| LIBOR \| Minimum
Debt Instrument [Line Items]
Variable margin	1.00%
Credit Facility \| LIBOR \| Maximum
Debt Instrument [Line Items]
Variable margin	2.25%
Shelf Agreement
Debt Instrument [Line Items]
Senior unsecured notes					$ 75.0
2005 Note Purchase Agreement
Debt Instrument [Line Items]
Senior notes, sale							$ 200.0
Senior notes, repurchased amount				$ 81.1
Senior notes, payment terms		Interest for each tranche of Notes is payable semi-annually on the 15th day of May and the 15th day of November of each year until all principal is paid for the respective tranche.
2007 Note Purchase Agreement
Debt Instrument [Line Items]
Senior notes, sale						$ 200.0
Senior notes, repurchased amount			$ 122.0
Senior notes, payment terms		Interest for each tranche of Notes is payable semi-annually on the second day of April and the second day of October of each year until all principal is paid for the respective tranche.

Amount Outstanding of Tranches - Two Thousand Five Note Purchase Agreement (Detail) - 2005 Note Purchase Agreement $ in Millions	3 Months Ended
	Jun. 30, 2012 USD ($)
Series 2005A Tranche A
Debt Instrument [Line Items]
Principal	$ 4.7
Maturity Date	Nov. 15, 2012
Interest Rate	5.25%
Series 2005A Tranche B
Debt Instrument [Line Items]
Principal	$ 57.0
Maturity Date	Nov. 15, 2015
Interest Rate	5.38%
Series 2005A Tranche C
Debt Instrument [Line Items]
Principal	$ 57.2
Maturity Date	Nov. 15, 2017
Interest Rate	5.48%

Amount Outstanding of Tranches - Two Thousand Seven Note Purchase Agreement (Detail) - 2007 Note Purchase Agreement $ in Millions	3 Months Ended
	Jun. 30, 2012 USD ($)
Series 2007A Tranche A
Debt Instrument [Line Items]
Principal	$ 9.5
Maturity Date	Oct. 02, 2014
Interest Rate	6.08%
Series 2007A Tranche B
Debt Instrument [Line Items]
Principal	$ 8.0
Maturity Date	Oct. 02, 2016
Interest Rate	6.27%
Series 2007A Tranche C
Debt Instrument [Line Items]
Principal	$ 24.0
Maturity Date	Oct. 02, 2017
Interest Rate	6.36%
Series 2007A Tranche D
Debt Instrument [Line Items]
Principal	$ 36.5
Maturity Date	Oct. 02, 2019
Interest Rate	6.48%

Interest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
Interest Expense (Detail) - USD ($) $ in Thousands	Jun. 30, 2012	Jun. 30, 2011
Net Interest Income [Line Items]
Interest (Income)	$ (1)	$ (1)
Interest Expense	3,551	4,475
Interest Expense - Income Taxes	97
Other Expenses	118	111
Interest Expense, net	$ 3,765	$ 4,585

Segment Information - Additional Information (Detail) $ in Millions	3 Months Ended
	Jun. 30, 2012 USD ($) Segment
Segment Reporting Information [Line Items]
Business segments \| Segment	4
Cement plant locations	4
Cement distribution terminals	11
Gypsum wallboard plants	5
Gypsum wallboard distribution center	1
Recycled paperboard mill	1
Readymix concrete batch plant	9
Aggregates processing plant	2
Proportionate consolidation of share of Joint Venture's revenues and operating earnings	50.00%
Gypsum Wallboard
Segment Reporting Information [Line Items]
Carrying value of plant	$ 3.3
Carrying value of equipment	$ 3.7

Financial Information Related to Operations by Segment (Detail) $ in Thousands	3 Months Ended
	Jun. 30, 2012 USD ($) MetricTon	Jun. 30, 2011 USD ($) MetricTon	Mar. 31, 2012 USD ($)
Segment Reporting Information [Line Items]
Revenues, Sub-total	$ 189,450	$ 152,062
Intersegment Revenues	11,701	10,861
Net Revenues, including Joint Venture	177,749	141,201
Less: Joint Venture	(23,707)	(21,394)
Net Revenues	154,042	119,807
Intersegment Revenues	11,701	10,861
Operating Earnings	29,095	9,742
Corporate General and Administrative	(5,416)	(4,118)
Capital Expenditures	4,685	3,812
Earnings Before Interest and Income Taxes	23,679	5,624
Depreciation, Depletion and Amortization	12,661	12,320
Interest Expense, Net	(3,765)	(4,585)
Identifiable Assets	980,396		$ 985,145
Earnings Before Income Taxes	19,914	1,039
Cement
Segment Reporting Information [Line Items]
Revenues, Sub-total	76,024	60,144
Intersegment Revenues	$ 567	$ 1,039
Cement Sales Volume (M Tons) \| MetricTon	848	674
Intersegment Revenues	$ 567	$ 1,039
Operating Earnings	9,866	8,788
Capital Expenditures	3,996	2,120
Depreciation, Depletion and Amortization	3,809	$ 3,730
Identifiable Assets	$ 319,051		313,559
Cement \| Wholly-Owned Operations
Segment Reporting Information [Line Items]
Cement Sales Volume (M Tons) \| MetricTon	621	449
Operating Earnings	$ 3,398	$ 3,340
Cement \| Joint Venture
Segment Reporting Information [Line Items]
Cement Sales Volume (M Tons) \| MetricTon	227	225
Operating Earnings	$ 6,468	$ 5,448
Gypsum Wallboard
Segment Reporting Information [Line Items]
Revenues, Sub-total	70,220	51,342
Operating Earnings	14,022	(1,762)
Capital Expenditures	196	1,313
Depreciation, Depletion and Amortization	5,277	5,217
Identifiable Assets	431,281		434,967
Paperboard
Segment Reporting Information [Line Items]
Revenues, Sub-total	30,329	28,676
Intersegment Revenues	10,922	9,682
Intersegment Revenues	10,922	9,682
Operating Earnings	5,276	3,030
Capital Expenditures	221	118
Depreciation, Depletion and Amortization	2,210	2,125
Identifiable Assets	136,398		137,483
Concrete and Aggregates
Segment Reporting Information [Line Items]
Revenues, Sub-total	12,877	11,900
Intersegment Revenues	212	140
Intersegment Revenues	212	140
Operating Earnings	201	(235)
Other, net
Segment Reporting Information [Line Items]
Operating Earnings	(270)	(79)
Capital Expenditures		49
Identifiable Assets	18,863		38,096
Other Depreciation, Depletion and Amortization	210	187
Aggregates
Segment Reporting Information [Line Items]
Capital Expenditures	235	73
Depreciation, Depletion and Amortization	887	816
Identifiable Assets	62,063		49,009
Concrete
Segment Reporting Information [Line Items]
Capital Expenditures	37	139
Depreciation, Depletion and Amortization	268	$ 245
Identifiable Assets	$ 12,740		$ 12,031

Segment Breakdown of Goodwill (Detail) - USD ($) $ in Thousands	Jun. 30, 2012	Mar. 31, 2012
Segment Reporting Information [Line Items]
Goodwill	$ 132,515	$ 132,515
Cement
Segment Reporting Information [Line Items]
Goodwill	8,359	8,359
Gypsum Wallboard
Segment Reporting Information [Line Items]
Goodwill	116,618	116,618
Paperboard
Segment Reporting Information [Line Items]
Goodwill	$ 7,538	$ 7,538

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 72
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e
-Clause 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 68
-Subparagraph l
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 141R
-Paragraph 34
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Summarized Financial Information for Joint Venture that is Not Consolidated (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Mar. 31, 2012
Segment Reporting Information [Line Items]
Revenues	$ 154,042	$ 119,807
Gross Margin	22,897	4,373
Current Assets	194,818		$ 191,841
Current Liabilities	77,661		77,043
Joint Venture
Segment Reporting Information [Line Items]
Revenues	41,196	38,170
Gross Margin	13,908	11,888
Earnings Before Income Taxes	12,936	$ 10,897
Current Assets	46,371		46,104
Non-Current Assets	44,133		44,105
Current Liabilities	$ 14,952		$ 15,719

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended
	Jul. 31, 2010	Jun. 30, 2010	Jun. 30, 2012
Commitments and Contingencies Disclosure [Line Items]
Contingent liabilities under outstanding letters of credit			$ 9.0
Contingent liability for performance bonds required by states municipalities and related agencies			$ 9.5
Notice of Deficiency received for taxes and penalties related to IRS audit		$ 71.5
Notice of deficiency received for taxes and penalties including interest		98.7
Taxes And Penalties Including Interest Deposited With IRS	$ 23.7	$ 75.0
Notice of deficiency received for taxes and penalties including interest, net outlay	97.9
Taxes and penalties amount refunded from IRS	0.8
Total taxes and penalties including interest deposited with IRS	$ 98.7

Insurance Accruals and Payments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Commitments and Contingencies Disclosure [Line Items]
Accrual Balances at Beginning of Period	$ 5,068	$ 6,639
Insurance Expense Accrued	659	966
Payments	(1,003)	(1,341)
Accrual Balance at End of Period	$ 4,724	$ 6,264

Fair Value of Senior Notes (Detail) $ in Thousands	Jun. 30, 2012 USD ($)
Series 2005A Tranche A
Fair Value of Financial Instruments [Line Items]
Fair value of Senior Notes	$ 4,730
Series 2005A Tranche B
Fair Value of Financial Instruments [Line Items]
Fair value of Senior Notes	58,756
Series 2005A Tranche C
Fair Value of Financial Instruments [Line Items]
Fair value of Senior Notes	58,410
Series 2007A Tranche A
Fair Value of Financial Instruments [Line Items]
Fair value of Senior Notes	9,935
Series 2007A Tranche B
Fair Value of Financial Instruments [Line Items]
Fair value of Senior Notes	8,533
Series 2007A Tranche C
Fair Value of Financial Instruments [Line Items]
Fair value of Senior Notes	25,500
Series 2007A Tranche D
Fair Value of Financial Instruments [Line Items]
Fair value of Senior Notes	$ 38,818