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Document And Entity Information - shares	9 Months Ended
Document And Entity Information - shares	Dec. 31, 2011	Feb. 02, 2012
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Dec. 31, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q3
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		44,944,310

Consolidated Statements Of Earnings - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Consolidated Statements Of Earnings [Abstract]
Revenues	$ 123,596	$ 103,870	$ 378,222	$ 366,799
Cost of Goods Sold	111,125	96,030	352,661	328,979
Gross Profit	12,471	7,840	25,561	37,820
Equity in Earnings of Unconsolidated Joint Venture	7,776	7,196	21,160	17,868
Corporate General and Administrative	(3,873)	(3,942)	(12,463)	(12,060)
Loss on Arbitration Ruling	(9,117)		(9,117)
Other Income (Expense)	(464)	192	(428)	1,084
Loss on Debt Retirement	(2,094)		(2,094)
Interest Expense, Net	(4,210)	(4,666)	(13,352)	(13,104)
Earnings Before Income Taxes	489	6,620	9,267	31,608
Income Tax Benefit (Expense)	2,408	(1,124)	462	(5,955)
Net Earnings	$ 2,897	$ 5,496	$ 9,729	$ 25,653
EARNINGS PER SHARE:
Basic	$ 0.07	$ 0.13	$ 0.22	$ 0.58
Diluted	$ 0.07	$ 0.12	$ 0.22	$ 0.58
AVERAGE SHARES OUTSTANDING:
Basic	44,212,098	43,887,833	44,197,540	43,858,606
Diluted	44,395,982	44,199,121	44,423,467	44,200,558
CASH DIVIDENDS PER SHARE:	$ 0.10	$ 0.10	$ 0.30	$ 0.30

Consolidated Balance Sheets - USD ($)
$ in Thousands

Dec. 31, 2011

Mar. 31, 2011

Current Assets -

Cash and Cash Equivalents

$ 3,679

$ 1,874

Accounts and Notes Receivable

54,491

43,855

Inventories

113,613

115,237

Income Tax Receivable

9,109

9,088

Prepaid and Other Assets

3,045

4,572

Total Current Assets

183,937

174,626

Property, Plant and Equipment -

1,138,261

1,115,058

Less: Accumulated Depreciation

(548,284)

(512,228)

Property, Plant and Equipment, net

589,977

602,830

Notes Receivable

3,448

5,326

Investment in Joint Venture

37,571

33,661

Goodwill and Intangible Assets

151,061

151,539

Other Assets

19,155

17,828

Assets, Total

^[1]

985,149

985,810

Current Liabilities -

Accounts Payable

33,344

30,339

Accrued Liabilities

42,456

40,011

Income Taxes Payable

3,392

Current Portion of Long-term Debt

4,677

Total Current Liabilities

83,869

70,350

Long-term Debt

276,259

287,000

Other Long-term Liabilities

35,268

37,807

Deferred Income Taxes

127,562

129,139

Total Liabilities

522,958

524,296

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 44,944,310 and 44,447,428 Shares, respectively

449

444

Capital in Excess of Par Value

29,235

24,859

Accumulated Other Comprehensive Losses

(2,893)

Retained Earnings

435,400

439,104

Total Stockholders' Equity

462,191

461,514

Liabilities and Stockholders' Equity, Total

$ 985,149

$ 985,810

[1]	Basis conforms with equity method accounting.

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2011	Mar. 31, 2011
Consolidated Balance Sheets [Abstract]
Preferred Stock, Par Value	$ 0.01	$ 0.01
Preferred Stock, Authorized	5,000,000	5,000,000
Preferred Stock, Issued	0	0
Common Stock, Par Value	$ 0.01	$ 0.01
Common Stock, Authorized	100,000,000	100,000,000
Common Stock, Issued	44,944,310	44,447,428
Common Stock, Outstanding	44,944,310	44,447,428

Consolidated Statements Of Cash Flows - USD ($)
$ in Thousands

9 Months Ended

Dec. 31, 2011

Dec. 31, 2010

CASH FLOWS FROM OPERATING ACTIVITIES

Net Earnings

$ 9,729

$ 25,653

Adjustments to Reconcile Net Earnings to Net Cash Provided by Operating Activities -

Depreciation, Depletion and Amortization

^[1]

37,354

36,966

Gain on Sale of Property, Plant and Equipment

(485)

Deferred Income Tax Provision

(1,735)

3,899

Stock Compensation Expense

4,042

2,845

Excess Tax Benefits from Share Based Payment Arrangements

(156)

(652)

Equity in Earnings of Unconsolidated Joint Venture

(21,160)

(17,868)

Distributions from Joint Venture

17,250

20,250

Changes in Operating Assets and Liabilities:

Accounts and Notes Receivable

(8,758)

4,903

Inventories

1,624

(5,141)

Accounts Payable and Accrued Liabilities

3,051

(6,344)

Other Assets

(891)

(1,508)

Income Taxes Payable

3,392

(24,406)

Net Cash Provided by Operating Activities

43,742

38,112

CASH FLOWS FROM INVESTING ACTIVITIES

Property, Plant and Equipment Additions

^[1]

(22,944)

(11,743)

Proceeds from Sale of Property, Plant and Equipment

600

Net Cash Used in Investing Activities

(22,944)

(11,143)

CASH FLOWS FROM FINANCING ACTIVITIES

Increase in Bank Credit Facility

82,000

2,000

Repayment of Senior Notes

(88,064)

(15,000)

Dividends Paid to Stockholders

(13,424)

(13,214)

Proceeds from Stock Option Exercises

732

1,230

Shares Redeemed to Settle Employee Taxes on Stock Compensation

(393)

Excess Tax Benefits from Share Based Payment Arrangements

156

652

Net Cash Used in Financing Activities

(18,993)

(24,332)

NET INCREASE IN CASH AND CASH EQUIVALENTS

1,805

2,637

CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD

1,874

1,416

CASH AND CASH EQUIVALENTS AT END OF PERIOD

$ 3,679

$ 4,053

[1]	Basis conforms with equity method accounting.

Basis Of Presentation

9 Months Ended

Dec. 31, 2011

Basis Of Presentation [Abstract]

Basis Of Presentation

(A)

BASIS OF PRESENTATION

The accompanying unaudited consolidated financial statements as of and for the nine month period ended December 31, 2011 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 26, 2011.

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.

We evaluated all events or transactions that occurred after December 31, 2011 through the filing of these financial statements. See Footnote (L) for discussion of subsequent event.

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.

+ References

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+ Details

Cash Flow Information - Supplemental

9 Months Ended

Dec. 31, 2011

Cash Flow Information - Supplemental [Abstract]

Cash Flow Information - Supplemental

(B)

CASH FLOW INFORMATION - SUPPLEMENTAL

Cash payments made for interest were $17.9 million and $17.7 million for the nine months ended December 31, 2011 and 2010, respectively. Net payments made for federal and state income taxes during the nine months ended December 31, 2011 and 2010, were $2.1 million and $19.7 million, respectively.

Comprehensive Income

9 Months Ended

Dec. 31, 2011

Comprehensive Income [Abstract]

Comprehensive Income

(C)

COMPREHENSIVE INCOME

Comprehensive income for the nine month periods ended December 31, 2011 and 2010 was identical to net income for the same periods.

As of December 31, 2011, we had an accumulated other comprehensive loss of $2.9 million, in connection with recognizing the difference between the fair value of the pension assets and the projected benefit obligation.

- Definition

The entire disclosure for comprehensive income. Includes, but is not limited to, the following: 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. Components of comprehensive income include: (1) foreign currency translation adjustments; (2) gains (losses) on foreign currency transactions that are designated as, and are effective as, economic hedges of a net investment in a foreign entity; (3) gains (losses) on intercompany foreign currency transactions that are of a long-term-investment nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements; (4) change in the market value of a futures contract that qualifies as a hedge of an asset reported at fair value; (5) unrealized holding gains (losses) on available-for-sale securities and that resulting from transfers of debt securities from the held-to-maturity category to the available-for-sale category; (6) a net loss recognized as an additional pension liability not yet recognized as net periodic pension cost; and (7) the net gain (loss) and net prior service cost or credit for pension plans and other postretirement benefit plans.

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+ Details

Accounts And Notes Receivable

9 Months Ended

Dec. 31, 2011

Accounts And Notes Receivable [Abstract]

Accounts And Notes Receivable

(D)

ACCOUNTS AND NOTES RECEIVABLE

Accounts and notes receivable have been shown net of the allowance for doubtful accounts of $5.0 million and $4.6 million at December 31, 2011 and March 31, 2011, 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 $4.0 million at December 31, 2011, of which approximately $0.6 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 LIBOR plus 3.5%. Remaining unpaid amounts, plus accrued interest, mature on various dates between 2011 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 December 31, 2011, 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 company. Examples include trade accounts receivables, notes receivables, loans receivables.

+ References

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-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 3, 4
-Article 5

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-Publisher AICPA
-Name Statement of Position (SOP)
-Number 01-6
-Paragraph 13
-Subparagraph d
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+ Details

Stockholders' Equity

9 Months Ended

Dec. 31, 2011

Stockholders' Equity [Abstract]

Stockholders' Equity

(E)

STOCKHOLDERS' EQUITY

A summary of changes in stockholders' equity follows:


	For the Nine Months Ended December 31, 2011
	(dollars in thousands)
Common Stock –
Balance at Beginning of Period	$	444
Stock Option Exercises		5


Balance at End of Period	$	449


Capital in Excess of Par Value –
Balance at Beginning of Period		24,859
Stock Compensation Expense		4,042
Shares Redeemed to Settle Employee Taxes		(393	)
Stock Option Exercises		727


Balance at End of Period		29,235


Retained Earnings –
Balance at Beginning of Period		437,154

Adjustment for Reversal of accrual (see below)		1,950

Balance at Beginning of Period		439,104
Dividends Declared to Stockholders		(13,433	)
Net Earnings		9,729


Balance at End of Period		435,400


Accumulated Other Comprehensive Loss -
Balance at Beginning of Period		(2,893	)


Balance at End of Period		(2,893	)


Total Stockholders' Equity	$	462,191

There were no open market share repurchases during the three and nine month periods ended December 31, 2011. As of December 31, 2011, we have authorization to purchase an additional 717,300 shares.

During January 2012, we determined that our previous treatment of a reversal of a $3.0 million accrual, which related to a prior year, should have been treated as a correction of an error in the prior period rather than a reduction of Cost of Goods Sold during the three month period ended June 30, 2011, as it was previously reported. The accrual was originally recorded in fiscal 2001, and related to expected costs to repair certain manufacturing equipment at our Duke, Oklahoma gypsum wallboard facility. We determined, through review of our records, that we subsequently purchased approximately $3.0 million of new equipment and virtually all the new equipment was fully depreciated at June 30, 2011; therefore, the accrual was no longer necessary.

We have restated our Form 10-Qs for the three month periods ended June 30, 2011 and September 30, 2011 to reflect this reversal of the $3.0 million accrual as an adjustment to a prior period. This restatement did not impact cash flows from operating activities.

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
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-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 2: http://www.xbrl.org/2003/role/presentationRef
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-Section 08
-Paragraph d

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Chapter 1
-Section B
-Paragraph 7, 11A
-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 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 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 7: 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 8: 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 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

Reference 11: http://www.xbrl.org/2003/role/presentationRef
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-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

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Reference 21: 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 22: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Name Accounting Standards Codification
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-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187143-122770

+ Details

Inventories

9 Months Ended

Dec. 31, 2011

Inventories [Abstract]

Inventories

(F)

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
	December 31, 2011		March 31, 2011
	(dollars in thousands)

Raw Materials and Material-in-Progress	$	39,253	$	35,118
Finished Cement		9,278		11,540
Gypsum Wallboard		6,093		6,347
Aggregates		12,661		12,419
Paperboard		1,823		5,274
Repair Parts and Supplies		40,334		41,659
Fuel and Coal		4,171		2,880

	$	113,613	$	115,237

Accrued Expenses

9 Months Ended

Dec. 31, 2011

Accrued Expenses [Abstract]

Accrued Expenses

(G)

ACCRUED EXPENSES

Accrued expenses consist of the following:


	As of
	December 31, 2011		March 31, 2011
	(dollars in thousands)
Payroll and Incentive Compensation	$	7,748	$	7,712
Benefits		8,571		7,988
Interest		2,050		7,003
Insurance		5,842		6,639
Property Taxes		3,600		4,033
Arbitration Loss		8,063		—
Other		6,582		6,636

	$	42,456	$	40,011

Computation Of Earnings Per Share

9 Months Ended

Dec. 31, 2011

Computation Of Earnings Per Share [Abstract]

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 December 31,						For the Nine Months Ended December 31,
	2011			2010			2011			2010

Weighted-Average Shares of Common Stock Outstanding		44,212,098			43,887,833			44,197,540			43,858,606

Common Equivalent Shares:
Assumed Exercise of Outstanding Dilutive Options		306,632			884,679			634,265			1,065,195
Less Shares Repurchased from Assumed Proceeds of Assumed Exercised Options		(205,175	)		(666,876	)		(506,070	)		(817,976	)

Restricted Shares		82,427			93,485			97,732			94,733

Weighted-Average Common and Common Equivalent Shares Outstanding		44,395,982			44,199,121			44,423,467			44,200,558

Shares Excluded Due to Anti-dilution Effects		3,391,168			2,741,721			2,978,930			2,555,217

Pension And Employee Benefit Plans

9 Months Ended

Dec. 31, 2011

Pension And Employee Benefit Plans [Abstract]

Pension And Employee Benefit Plans

(I)

PENSION AND EMPLOYEE BENEFIT PLANS

We sponsor four defined benefit and two defined contribution 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 December 31,						For the Nine Months ended December 31,
	2011			2010			2011			2010
	(dollars in thousands)						(dollars in thousands)
Service Cost – Benefits Earned during the Period	$	139		$	148		$	417		$	418
Interest Cost of Benefit Obligations		265			283			795			795
Expected Return on Plan Assets		(291	)		(461	)		(873	)		(873	)
Recognized Net Actuarial Loss		86			122			258			266
Amortization of Prior-Service Cost		20			4			60			60

Net Periodic Pension Cost	$	219		$	96		$	657		$	666

- Definition

The entire disclosure for pension and other postretirement benefits.

+ References

Reference 1: 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 2: 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 3: 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 4: 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 5: 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 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.

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 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 9: 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.

Reference 10: 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 11: 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 12: 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 13: 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 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

+ Details

Share-Based Employee Compensation

9 Months Ended

Dec. 31, 2011

Share-Based Employee Compensation [Abstract]

Share-Based Employee Compensation

(J)

SHARE-BASED EMPLOYEE COMPENSATION

On January 8, 2004, our stockholders approved a new 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 2011, the Compensation Committee of the Board of Directors approved an incentive equity award of an aggregate of 352,829 stock options pursuant to the Plan to certain individuals that vest ratably over a three year period (the "Fiscal 2012 Employee Stock Option Grant"). The options have a term of ten years from the date of grant. In August 2011, we granted 121,295 options to members of the Board of Directors (the "Fiscal 2012 Board of Directors Grant"). Options granted under the Fiscal 2012 Board of Directors Grant vested immediately, and can be exercised from the date of grant until their expiration at the end of ten years. The Fiscal 2012 Employee Stock Option Grant and Fiscal 2012 Board of Directors Grant were both 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 2012 are as follows:


Dividend Yield		2.0%
Expected Volatility		41.9%
Risk Free Interest Rate		2.5%
Expected Life		8.0 years

Stock option expense for all outstanding stock option awards totaled approximately $0.5 million and $1.1 million for the three and nine month periods ended December 31, 2011, respectively, and $0.3 million and $1.5 million for the three and nine month periods ended December 31, 2010, respectively. The expense for the nine month period ended December 31, 2011 reflects a credit of $1.3 million resulting from our updated assessment of future compliance with performance conditions associated with certain stock option grants. At December 31, 2011, there was approximately $4.1 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 2.3 years.

The following table represents stock option activity for the nine months ended December 31, 2011:


	Number of Shares			Weighted- Average Exercise Price
Outstanding Options at Beginning of Period		3,323,786		$	35.60
Granted		474,124		$	26.41
Exercised		(53,751	)	$	13.62
Cancelled		(72,439	)	$	34.35

Outstanding Options at End of Period		3,671,720		$	34.76

Options Exercisable at End of Period		1,860,895

Weighted-Average Fair Value of Options Granted during the Period	$	10.29

The following table summarizes information about stock options outstanding at December 31, 2011:


	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 - $ 13.43		276,552		1.11	$	12.17		276,552	$	12.17
$ 23.17 - $ 30.74		1,688,984		5.57	$	26.88		1,239,434	$	26.44
$ 34.09 - $ 40.78		308,170		1.92	$	37.91		277,770	$	38.07
$ 47.53 - $ 62.83		1,398,014		2.53	$	48.06		67,139	$	58.42

		3,671,720		3.77	$	34.76		1,860,895	$	27.21

At December 31, 2011, there was no aggregate intrinsic value for both outstanding and exercisable options. The total intrinsic value of options exercised during the nine month period ended December 31, 2011 was approximately $0.6 million.

Restricted Stock Units. Expense related to RSUs was approximately $0.4 million and $1.1 million for the three and nine month periods ended December 31, 2011, respectively, and $0.1 million and $0.4 million for the three and nine month periods ended December 31, 2010, respectively. At December 31, 2011, there was approximately $2.2 million of unearned compensation from RSUs, net of estimated forfeitures, which will be recognized over a weighted-average period of 1.5 years.

Restricted Stock. In June 2011, the Compensation Committee also approved the granting of an aggregate of 412,164 shares of restricted stock to certain key employees at both the corporate and subsidiary level that will be earned if our ten year average return on invested capital exceeds 12% at March 31, 2012. 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, 2013 through 2016. The value of the restricted shares, net of estimated forfeitures, is being expensed over a five year period. Expense related to restricted shares was $0.8 million and $1.9 million for the three and nine month periods ended December 31, 2011, respectively, and $0.3 million and $0.8 million for the three and nine month periods ended December 31, 2010, respectively. At December 31, 2011, 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 5.2 years.

The number of shares available for future stock option, restricted stock unit, stock appreciation right and restricted stock grants under the Plan was 1,739,081 at December 31, 2011.

- 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 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 2: 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.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 4: 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 5: 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 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

Reference 8: 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

+ Details

Long-Term Debt

9 Months Ended

Dec. 31, 2011

Long-Term Debt [Abstract]

Long-Term Debt

(K)

LONG-TERM DEBT

Long-term debt consists of the following:


	As of
	December 31, 2011			March 31, 2011
	(dollars in thousands)

Bank Credit Facility	$	84,000		$	2,000
Senior Notes		196,936			285,000

Total Debt		280,936			287,000
Less: Current Portion of Long-term Debt		(4,677	)		—

Long-Term Debt	$	276,259		$	287,000

On December 16, 2011, we accepted for repurchase $59.1 million in aggregate principal amount of our Series 2007A Senior Notes for $60.2 million, plus accrued interest of $0.3 million, and $29.0 million in aggregate principal amount of our Series 2005A Senor Notes for $29.6 million, plus accrued interest of $0.4 million. The purchase of the Senior Notes was funded through borrowings under our Bank Credit Facility. The premium paid on these repurchases has been included in Loss on Debt Retirement in our Consolidated Statement of Earnings for the three and nine month periods ended December 31, 2011.

Bank Credit Facility -

On December 16, 2010, we amended our existing credit facility, modifying certain financial and other covenants and extending the maturity date to 2015. The principal balance of the existing facility was repaid, and replaced with a new $300.0 million credit agreement ("the "Bank Credit Facility"). The Bank Credit Facility expires on December 16, 2015. Borrowings under the Bank Credit Facility are guaranteed by all major operating subsidiaries of the Company. At the option of the Company, outstanding principal amounts on the Bank 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 nine months at the option of the Company. The Bank 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 Bank 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 Bank 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 Bank 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 December 31, 2011, we had $9.4 million of letters of credit outstanding. We had $206.6 million of borrowings available under the Bank Credit Facility at December 31, 2011. Due to certain covenants contained in the Bank Credit Facility, namely the requirement for our consolidated funded debt ratio to remain at 3.50 to 1.0 or less, and other outstanding debt instruments, approximately $55.0 million in additional borrowings were available to us at December 31, 2011.

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 into the 2005 Note Purchase Agreement, we have repurchased an aggregate of $81.1 million in principal of the Series 2005A Senior Notes through December 31, 2011. Following these repurchases, 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 May 15 and November 15 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 an aggregate of $122.0 million in principal of the Series 2007A Senior Notes through December 31, 2011. Following the repurchase, 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 April 2 and October 2 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 Bank 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 Bank Credit Facility. We were in compliance with all financial ratios and covenants at December 31, 2011.

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 December 31, 2011.

Commitments And Contingencies

9 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Commitments And Contingencies

(L)

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 December 31, 2011, we had contingent liabilities under these outstanding letters of credit of approximately $9.4 million.

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


	As of and For the Three Months Ended December 31,						As of and For the Nine Months Ended December 31,
	2011			2010			2011			2010
	(dollars in thousands)						(dollars in thousands)

Accrual Balances at Beginning of Period	$	6,294		$	6,846		$	6,639		$	6,384
Insurance Expense Accrued		630			610			1,783			2,156
Payments		(1,082	)		(545	)		(2,580	)		(1,629	)

Accrual Balance at End of Period	$	5,842		$	6,911		$	5,842		$	6,911

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 $10.3 million in performance bonds required by certain states and municipalities, and their related agencies. The bonds are principally for certain reclamation obligations and mining permits. We have indemnified the underwriting insurance company against any exposure under the performance bonds. In our 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 proposes 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 return 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 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.

Subsequent Event

In June 2011, we were served with a claim for arbitration involving a contract dispute between one of our aggregates mining subsidiaries and another mining company over the right to mine certain areas. The mining company which brought this claim mines gold in the same area in which our subsidiary mines aggregates. The dispute centered on two agreements entered into by the parties in 1989 and 1992 that address the rights and obligations of the parties with respect to the areas in which both companies mine. In the arbitration, the gold mining company claimed that our subsidiary's operations in a limited area (which are conducted through a licensee) interfered with the gold mining company's right under the agreements to mine gold and that the gold in that area was therefore no longer recoverable. Based on the agreements, we concluded that our subsidiary's operations were permitted to be conducted in that area, particularly in light of the fact that our subsidiary had operations on the disputed parcel (through a licensee) prior to the 1992 agreement. Moreover, based on the express language of the two agreements, we concluded that, even if the arbitration panel were to decide otherwise, our subsidiary was entitled to continue its operations until a determination was made in the arbitration and that any damages or other relief ordered by the panel would not accrue for periods prior to the determination by the arbitration panel and, accordingly, would not be material to the Company. Based primarily on these contractual provisions and related facts, we concluded at the time we filed our Form 10-Qs for the first two quarters of fiscal 2012 that the likelihood that the proceeding would be material to our financial statements was remote.

The arbitration panel convened in November 2011 and resulting proceeding was concluded in December 2011, although the decision was not announced until January 19, 2012. When the decision of the arbitration panel was announced, the arbitration panel ruled against us and awarded $6.9 million to the other mining company. Additionally, we believe it is probable that the arbitration panel will award attorneys' fees and arbitration costs to the other party. The dollar amount of attorneys' fees and arbitration costs the panel may award is uncertain since the panel will make its decision on such costs in late February or early March; however, if adversely decided, we estimate that these additional amounts to be approximately $1.2 million, although the actual amounts, when determined, may be either less than or greater than the amount accrued. As a result of this arbitration award, we have accrued a loss of $8.1 million at December 31, 2011. This amount, together with our legal expenses incurred during the third quarter of fiscal 2012, is classified as Loss on Arbitration Ruling in our Consolidated Statements of Earnings for the three and nine month periods ended December 31, 2011. The award will become final and payable during the quarter ending March 31, 2012, and any changes to the estimated accrual will be recognized during that quarter. The ruling involves a limited area within our California aggregates deposit and is not expected to have a material adverse impact on our continuing operations in future periods.

There is also a pending lawsuit in state court filed by the same claimant/mining company based on the same facts and circumstances which were the subject of the arbitration. The state lawsuit has been stayed pending the outcome of the arbitration ruling. While we believe that the resolution of the arbitration hearing substantially addresses the claims in the state lawsuit and that the incurrence of any further material loss in this case is remote, we are currently unable to determine the outcome of this lawsuit or the impact of an unfavorable ruling on our financial position, results of operations or cash flows.

- Definition

The entire disclosure for commitments and contingencies.

+ References

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+ Details

Income Taxes

9 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Income Taxes

(M)

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 nine months ended December 31, 2011 was approximately 23%, before the impact of the discrete items discussed below.

During the quarter ended December 31, 2011, the federal statute of limitations for assessment for the years ended March 31, 2004, March 31, 2005 and March 31, 2006 expired. Also during the quarter, the Company participated in amnesty programs in Arizona, Colorado and California. These events were treated as discrete items in the tax provision and a benefit totaling approximately $2.5 million on an after-tax basis was recognized.

During January 2012, we received payment of the $9.1 million owed to us by the IRS at December 31, 2011.

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-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
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-Name Statement of Financial Accounting Standard (FAS)
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-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
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-Section 50
-Paragraph 15
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-Subparagraph (SX 210.4-08.(h))
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+ Details

Fair Value Of Financial Instruments

9 Months Ended

Dec. 31, 2011

Fair Value Of Financial Instruments [Abstract]

Fair Value Of Financial Instruments

(N)

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 December 31, 2011 is as follows:


	Fair Value
	(dollars in thousands)

Series 2005A Tranche A	$	4,771
Series 2005A Tranche B		59,651
Series 2005A Tranche C		59,419
Series 2007A Tranche A		10,108
Series 2007A Tranche B		8,492
Series 2007A Tranche C		25,392
Series 2007A Tranche D		38,599

The carrying values of cash and cash equivalents, accounts and notes receivable, accounts payable, accrued liabilities and our Bank Credit Facility approximate their fair values at December 31, 2011 due to the short-term maturities or variable interest rates of these assets and liabilities.

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
-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 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-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
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Segment Information

9 Months Ended

Dec. 31, 2011

Segment Information [Abstract]

Segment Information

(O)

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						For the Nine Months
	Ended December 31,						Ended December 31,
	2011			2010			2011			2010
	(dollars in thousands)						(dollars in thousands)
Revenues -
Cement	$	61,510		$	54,876		$	194,208		$	185,151
Gypsum Wallboard		54,063			45,389			156,386			153,903
Paperboard		30,001			22,381			90,414			80,309
Concrete and Aggregates		10,250			10,443			36,032			34,706

Sub-total		155,824			133,089			477,040			454,069
Less: Intersegment Revenues		(11,595	)		(10,038	)		(34,331	)		(31,321	)

Revenues, including Joint Venture		144,229			123,051			442,709			422,748
Less: Joint Venture		(20,633	)		(19,181	)		(64,487	)		(55,949	)

Net Revenues	$	123,596		$	103,870		$	378,222		$	366,799


	For the Three Months Ended December 31,				For the Nine Months Ended December 31,
	2011		2010		2011		2010
	(dollars in thousands)				(dollars in thousands)
Intersegment Revenues -
Cement	$	803	$	1,394	$	3,044	$	3,550
Paperboard		10,594		8,491		30,728		27,311
Concrete and Aggregates		198		153		559		460

	$	11,595	$	10,038	$	34,331	$	31,321


Cement Sales Volume (M Tons) -
Wholly – owned Operations		497		408		1,534		1,482
Joint Venture		203		211		657		614

		700		619		2,191		2,096


	For the Three Months						For the Nine Months
	Ended December 31,						Ended December 31,
	2011			2010			2011			2010
	(dollars in thousands)						(dollars in thousands)
Operating Earnings -
Cement	$	15,493		$	15,257		$	39,392		$	41,017
Gypsum Wallboard		228			(2,535	)		(4,074	)		3,961
Paperboard		5,146			2,160			12,214			9,787
Concrete and Aggregates		(620	)		154			(811	)		923
Other, net		(464	)		192			(428	)		1,084

Sub-total		19,783			15,228			46,293			56,772
Corporate General and Administrative		(3,873	)		(3,942	)		(12,463	)		(12,060	)
Loss on Arbitration Ruling		(9,117	)		—			(9,117	)		—

Earnings Before Interest and Income Taxes		6,793			11,286			24,713			44,712
Premium Paid on Debt Retirement		(2,094	)		—			(2,094	)		—
Interest Expense, net		(4,210	)		(4,666	)		(13,352	)		(13,104	)

Earnings Before Income Taxes	$	489		$	6,620		$	9,267		$	31,608


Cement Operating Earnings -
Wholly – owned Operations	$	7,717		$	8,061		$	18,232		$	23,149
Joint Venture		7,776			7,196			21,160			17,868

	$	15,493		$	15,257		$	39,392		$	41,017


Capital Expenditures ⁽¹⁾-
Cement	$	1,723		$	3,484		$	5,931		$	6,763
Gypsum Wallboard		1,174			658			3,188			1,213
Paperboard		532			803			754			860
Aggregates		11,870			1,200			12,751			2,645
Concrete		129			131			271			183
Other		—			—			49			79

	$	15,428		$	6,276		$	22,944		$	11,743


Depreciation, Depletion and Amortization ⁽¹⁾-
Cement	$	3,821		$	3,474		$	11,254		$	10,814
Gypsum Wallboard		5,314			5,321			15,798			16,243
Paperboard		2,131			2,198			6,383			6,717
Aggregates		851			758			2,477			2,053
Concrete		260			229			758			714
Other, net		294			147			684			425

	$	12,671		$	12,127		$	37,354		$	36,966


	As of
	December 31, 2011		March 31, 2011
	(dollars in thousands)
Identifiable Assets ⁽¹⁾-
Cement	$	310,356	$	304,693
Gypsum Wallboard		432,843		446,174
Paperboard		141,413		144,434
Aggregates		50,319		39,237
Concrete		12,578		12,560
Corporate and Other		37,640		38,712

	$	985,149	$	985,810

⁽¹⁾	Basis conforms with equity method accounting.

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
	December 31,		March 31,
	2011		2011
	(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 during the last three fiscal years, and continuing into this year, we have performed an impairment test at the end of each of the first three fiscal quarters for the gypsum wallboard assets and goodwill, noting that there was no impairment at this time. We will continue to test for any potential impairment on a quarterly basis throughout fiscal year 2012, or until conditions in the wallboard industry improve enough for us to determine that an impairment loss is not likely to occur.

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 December 31, 2011 was $7.6 million and $1.4 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, 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 our 50% interest in those amounts):


	For the Three Months Ended December 31,				For the Nine Months Ended December 31,
	2011		2010		2011		2010
	(dollars in thousands)				(dollars in thousands)

Revenues	$	35,558	$	33,950	$	113,353	$	100,253
Gross Margin	$	16,487	$	15,459	$	45,439	$	38,820
Earnings Before Income Taxes	$	15,552	$	14,391	$	42,320	$	35,736


	As of
	December 31, 2011		March 31, 2011
	(dollars in thousands)

Current Assets	$	46,038	$	42,541
Non-Current Assets	$	42,678	$	33,457
Current Liabilities	$	17,038	$	10,296

During the nine month period ended December 31, 2011, we provided approximately $10.0 million to our Joint Venture for its capital needs.

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-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 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
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-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8984-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 280
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-Name Accounting Standards Codification
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 280
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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8933-108599

+ Details

Interest Expense

9 Months Ended

Dec. 31, 2011

Interest Expense [Abstract]

Interest Expense

(P)

INTEREST EXPENSE

The following components are included in interest expense, net:


	For the Three Months Ended December 31,						For the Nine Months Ended December 31,
	2011			2010			2011			2010
	(dollars in thousands)						(dollars in thousands)

Interest (Income)	$	(3	)	$	(2	)	$	(5	)	$	(6	)
Interest Expense		4,425			4,402			13,340			13,300
Interest Expense (Income) – Income Taxes		(426	)		213			(426	)		(333	)
Other Expenses		214			53			443			143

Interest Expense, net	$	4,210		$	4,666		$	13,352		$	13,104

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

Interest expense – Income Taxes relates to interest accrued on our unrecognized tax benefits, primarily related to the Republic Asset Acquisition. During fiscal 2011, we paid or applied cash deposits as payments to the IRS and filed amended state tax returns and made payments for the tax years 2001 through 2006.

Stockholders' Equity (Tables)

9 Months Ended

Dec. 31, 2011

Stockholders' Equity [Abstract]

Summary Of Changes In Stockholders' Equity


	For the Nine Months Ended December 31, 2011
	(dollars in thousands)
Common Stock –
Balance at Beginning of Period	$	444
Stock Option Exercises		5


Balance at End of Period	$	449


Capital in Excess of Par Value –
Balance at Beginning of Period		24,859
Stock Compensation Expense		4,042
Shares Redeemed to Settle Employee Taxes		(393	)
Stock Option Exercises		727


Balance at End of Period		29,235


Retained Earnings –
Balance at Beginning of Period		437,154

Adjustment for Reversal of accrual (see below)		1,950

Balance at Beginning of Period		439,104
Dividends Declared to Stockholders		(13,433	)
Net Earnings		9,729


Balance at End of Period		435,400


Accumulated Other Comprehensive Loss -
Balance at Beginning of Period		(2,893	)


Balance at End of Period		(2,893	)


Total Stockholders' Equity	$	462,191

Inventories (Tables)

9 Months Ended

Dec. 31, 2011

Inventories [Abstract]

Schedule Of Inventories


	As of
	December 31, 2011		March 31, 2011
	(dollars in thousands)

Raw Materials and Material-in-Progress	$	39,253	$	35,118
Finished Cement		9,278		11,540
Gypsum Wallboard		6,093		6,347
Aggregates		12,661		12,419
Paperboard		1,823		5,274
Repair Parts and Supplies		40,334		41,659
Fuel and Coal		4,171		2,880

	$	113,613	$	115,237

Accrued Expenses (Tables)

9 Months Ended

Dec. 31, 2011

Accrued Expenses [Abstract]

Schedule Of Accrued Expenses


	As of
	December 31, 2011		March 31, 2011
	(dollars in thousands)
Payroll and Incentive Compensation	$	7,748	$	7,712
Benefits		8,571		7,988
Interest		2,050		7,003
Insurance		5,842		6,639
Property Taxes		3,600		4,033
Arbitration Loss		8,063		—
Other		6,582		6,636

	$	42,456	$	40,011

Computation Of Earnings Per Share (Tables)

9 Months Ended

Dec. 31, 2011

Computation Of Earnings Per Share [Abstract]

Schedule Of Calculation Of Basic And Diluted Common Shares Outstanding


	For the Three Months Ended December 31,						For the Nine Months Ended December 31,
	2011			2010			2011			2010

Weighted-Average Shares of Common Stock Outstanding		44,212,098			43,887,833			44,197,540			43,858,606

Common Equivalent Shares:
Assumed Exercise of Outstanding Dilutive Options		306,632			884,679			634,265			1,065,195
Less Shares Repurchased from Assumed Proceeds of Assumed Exercised Options		(205,175	)		(666,876	)		(506,070	)		(817,976	)

Restricted Shares		82,427			93,485			97,732			94,733

Weighted-Average Common and Common Equivalent Shares Outstanding		44,395,982			44,199,121			44,423,467			44,200,558

Shares Excluded Due to Anti-dilution Effects		3,391,168			2,741,721			2,978,930			2,555,217

Pension And Employee Benefit Plans (Tables)

9 Months Ended

Dec. 31, 2011

Pension And Employee Benefit Plans [Abstract]

Components Of Net Periodic Cost


	For the Three Months Ended December 31,						For the Nine Months ended December 31,
	2011			2010			2011			2010
	(dollars in thousands)						(dollars in thousands)
Service Cost – Benefits Earned during the Period	$	139		$	148		$	417		$	418
Interest Cost of Benefit Obligations		265			283			795			795
Expected Return on Plan Assets		(291	)		(461	)		(873	)		(873	)
Recognized Net Actuarial Loss		86			122			258			266
Amortization of Prior-Service Cost		20			4			60			60

Net Periodic Pension Cost	$	219		$	96		$	657		$	666

Share-Based Employee Compensation (Tables)

9 Months Ended

Dec. 31, 2011

Share-Based Employee Compensation [Abstract]

Schedule Of Weighted-Average Assumptions Used To Value The Option Awards


Dividend Yield		2.0%
Expected Volatility		41.9%
Risk Free Interest Rate		2.5%
Expected Life		8.0 years

Schedule Of Stock Option Activity


	Number of Shares			Weighted- Average Exercise Price
Outstanding Options at Beginning of Period		3,323,786		$	35.60
Granted		474,124		$	26.41
Exercised		(53,751	)	$	13.62
Cancelled		(72,439	)	$	34.35

Outstanding Options at End of Period		3,671,720		$	34.76

Options Exercisable at End of Period		1,860,895

Weighted-Average Fair Value of Options Granted during the Period	$	10.29

Schedule Of Stock Options Outstanding


	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 - $ 13.43		276,552		1.11	$	12.17		276,552	$	12.17
$ 23.17 - $ 30.74		1,688,984		5.57	$	26.88		1,239,434	$	26.44
$ 34.09 - $ 40.78		308,170		1.92	$	37.91		277,770	$	38.07
$ 47.53 - $ 62.83		1,398,014		2.53	$	48.06		67,139	$	58.42

		3,671,720		3.77	$	34.76		1,860,895	$	27.21

Long-Term Debt (Tables)

9 Months Ended

Dec. 31, 2011

Debt Instrument [Line Items]

Schedule Of Debt


	As of
	December 31, 2011			March 31, 2011
	(dollars in thousands)

Bank Credit Facility	$	84,000		$	2,000
Senior Notes		196,936			285,000

Total Debt		280,936			287,000
Less: Current Portion of Long-term Debt		(4,677	)		—

Long-Term Debt	$	276,259		$	287,000

2005 Note Purchase Agreement [Member]

Debt Instrument [Line Items]

Schedule Of Long-Term Debt


	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 [Member]

Debt Instrument [Line Items]

Schedule Of Long-Term Debt


	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 SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

+ Details

Commitments And Contingencies (Tables)

9 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Schedule Of Insurance Accruals And Payments


	As of and For the Three Months Ended December 31,						As of and For the Nine Months Ended December 31,
	2011			2010			2011			2010
	(dollars in thousands)						(dollars in thousands)

Accrual Balances at Beginning of Period	$	6,294		$	6,846		$	6,639		$	6,384
Insurance Expense Accrued		630			610			1,783			2,156
Payments		(1,082	)		(545	)		(2,580	)		(1,629	)

Accrual Balance at End of Period	$	5,842		$	6,911		$	5,842		$	6,911

Fair Value Of Financial Instruments (Tables)

9 Months Ended

Dec. 31, 2011

Fair Value Of Financial Instruments [Abstract]

Schedule Of Fair Value Of Senior Notes


	Fair Value
	(dollars in thousands)

Series 2005A Tranche A	$	4,771
Series 2005A Tranche B		59,651
Series 2005A Tranche C		59,419
Series 2007A Tranche A		10,108
Series 2007A Tranche B		8,492
Series 2007A Tranche C		25,392
Series 2007A Tranche D		38,599

Segment Information (Tables)

9 Months Ended

Dec. 31, 2011

Segment Information [Abstract]

Schedule Of Financial Information Related To Operations By Segment


	For the Three Months						For the Nine Months
	Ended December 31,						Ended December 31,
	2011			2010			2011			2010
	(dollars in thousands)						(dollars in thousands)
Revenues -
Cement	$	61,510		$	54,876		$	194,208		$	185,151
Gypsum Wallboard		54,063			45,389			156,386			153,903
Paperboard		30,001			22,381			90,414			80,309
Concrete and Aggregates		10,250			10,443			36,032			34,706

Sub-total		155,824			133,089			477,040			454,069
Less: Intersegment Revenues		(11,595	)		(10,038	)		(34,331	)		(31,321	)

Revenues, including Joint Venture		144,229			123,051			442,709			422,748
Less: Joint Venture		(20,633	)		(19,181	)		(64,487	)		(55,949	)

Net Revenues	$	123,596		$	103,870		$	378,222		$	366,799


	For the Three Months Ended December 31,				For the Nine Months Ended December 31,
	2011		2010		2011		2010
	(dollars in thousands)				(dollars in thousands)
Intersegment Revenues -
Cement	$	803	$	1,394	$	3,044	$	3,550
Paperboard		10,594		8,491		30,728		27,311
Concrete and Aggregates		198		153		559		460

	$	11,595	$	10,038	$	34,331	$	31,321


Cement Sales Volume (M Tons) -
Wholly – owned Operations		497		408		1,534		1,482
Joint Venture		203		211		657		614

		700		619		2,191		2,096


	For the Three Months						For the Nine Months
	Ended December 31,						Ended December 31,
	2011			2010			2011			2010
	(dollars in thousands)						(dollars in thousands)
Operating Earnings -
Cement	$	15,493		$	15,257		$	39,392		$	41,017
Gypsum Wallboard		228			(2,535	)		(4,074	)		3,961
Paperboard		5,146			2,160			12,214			9,787
Concrete and Aggregates		(620	)		154			(811	)		923
Other, net		(464	)		192			(428	)		1,084

Sub-total		19,783			15,228			46,293			56,772
Corporate General and Administrative		(3,873	)		(3,942	)		(12,463	)		(12,060	)
Loss on Arbitration Ruling		(9,117	)		—			(9,117	)		—

Earnings Before Interest and Income Taxes		6,793			11,286			24,713			44,712
Premium Paid on Debt Retirement		(2,094	)		—			(2,094	)		—
Interest Expense, net		(4,210	)		(4,666	)		(13,352	)		(13,104	)

Earnings Before Income Taxes	$	489		$	6,620		$	9,267		$	31,608


Cement Operating Earnings -
Wholly – owned Operations	$	7,717		$	8,061		$	18,232		$	23,149
Joint Venture		7,776			7,196			21,160			17,868

	$	15,493		$	15,257		$	39,392		$	41,017


Capital Expenditures ⁽¹⁾-
Cement	$	1,723		$	3,484		$	5,931		$	6,763
Gypsum Wallboard		1,174			658			3,188			1,213
Paperboard		532			803			754			860
Aggregates		11,870			1,200			12,751			2,645
Concrete		129			131			271			183
Other		—			—			49			79

	$	15,428		$	6,276		$	22,944		$	11,743


Depreciation, Depletion and Amortization ⁽¹⁾-
Cement	$	3,821		$	3,474		$	11,254		$	10,814
Gypsum Wallboard		5,314			5,321			15,798			16,243
Paperboard		2,131			2,198			6,383			6,717
Aggregates		851			758			2,477			2,053
Concrete		260			229			758			714
Other, net		294			147			684			425

	$	12,671		$	12,127		$	37,354		$	36,966


	As of
	December 31, 2011		March 31, 2011
	(dollars in thousands)
Identifiable Assets ⁽¹⁾-
Cement	$	310,356	$	304,693
Gypsum Wallboard		432,843		446,174
Paperboard		141,413		144,434
Aggregates		50,319		39,237
Concrete		12,578		12,560
Corporate and Other		37,640		38,712

	$	985,149	$	985,810

⁽¹⁾	Basis conforms with equity method accounting.

Schedule Of Goodwill


	As of
	December 31,		March 31,
	2011		2011
	(dollars in thousands)

Cement	$	8,359	$	8,359
Gypsum Wallboard		116,618		116,618
Paperboard		7,538		7,538

	$	132,515	$	132,515

Schedule Of Summarized Financial Information For The Joint Venture Not Consolidated


	For the Three Months Ended December 31,				For the Nine Months Ended December 31,
	2011		2010		2011		2010
	(dollars in thousands)				(dollars in thousands)

Revenues	$	35,558	$	33,950	$	113,353	$	100,253
Gross Margin	$	16,487	$	15,459	$	45,439	$	38,820
Earnings Before Income Taxes	$	15,552	$	14,391	$	42,320	$	35,736

Schedule Of Assets And Liabilities Of The Joint Venture Not Consolidated


	As of
	December 31, 2011		March 31, 2011
	(dollars in thousands)

Current Assets	$	46,038	$	42,541
Non-Current Assets	$	42,678	$	33,457
Current Liabilities	$	17,038	$	10,296

- Definition

Tabular disclosure of goodwill by reportable segment and in total. Disclosure details may include, but are not limited to, the carrying amount of goodwill, goodwill acquired during the year, goodwill impairment losses recognized, goodwill written-off due to the sale of a business unit, goodwill not yet allocated, and any other changes to goodwill.

+ 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

Interest Expense (Tables)

9 Months Ended

Dec. 31, 2011

Interest Expense [Abstract]

Schedule Of Interest Expense


	For the Three Months Ended December 31,						For the Nine Months Ended December 31,
	2011			2010			2011			2010
	(dollars in thousands)						(dollars in thousands)

Interest (Income)	$	(3	)	$	(2	)	$	(5	)	$	(6	)
Interest Expense		4,425			4,402			13,340			13,300
Interest Expense (Income) – Income Taxes		(426	)		213			(426	)		(333	)
Other Expenses		214			53			443			143

Interest Expense, net	$	4,210		$	4,666		$	13,352		$	13,104

Cash Flow Information - Supplemental (Details) - USD ($) $ in Millions	9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Cash Flow Information - Supplemental [Abstract]
Cash payments made for interest	$ 17.9	$ 17.7
Net payments made for federal and state income taxes	$ 2.1	$ 19.7

Comprehensive Income (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Mar. 31, 2011
Comprehensive Income [Abstract]
Accumulated other comprehensive loss	$ (2,893)	$ (2,893)

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References

+ Details

Accounts And Notes Receivable (Details) - USD ($) $ in Millions	9 Months Ended
	Dec. 31, 2011	Mar. 31, 2011
Accounts And Notes Receivable [Line Items]
Allowance for doubtful accounts	$ 5.0	$ 4.6
Significant credit risk concentration	0
Notes payable interest rate plus LIBOR rate	3.50%
Notes receivable, total	$ 4.0
Notes receivable, current	$ 0.6
Notes receivable maturity date range start	2011
Notes receivable maturity date range end	2017
Notes Receivable [Member]
Accounts And Notes Receivable [Line Items]
Allowance for doubtful accounts	$ 0.6

- Definition

Description of potential risks that the counterparty to a contractual arrangement fails to meet its contractual obligations. At a minimum, the description informs financial statement users of the general nature of the risk.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15A
-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 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 113
-Paragraph 28
-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 AICPA
-Name Statement of Position (SOP)
-Number 01-6
-Paragraph 14
-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 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number SOP94-6-1
-Paragraph 7, 11
-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 Accounting Standards Codification
-Topic 944
-SubTopic 825
-Section 55
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6487554&loc=d3e32600-158583

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13537-108611

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13531-108611

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 55
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6875567&loc=d3e14537-108613

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 825
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6480020&loc=d3e61044-112788

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 825
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6480020&loc=d3e61082-112788

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 55
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6875567&loc=d3e14489-108613

+ Details

- 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

Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
Stockholders' Equity (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Mar. 31, 2011
Stockholders' Equity [Line Items]
Balance at Beginning of Period			$ 444		$ 444
Stock Compensation Expense					4,042	$ 2,845
Adjustment for Reversal of accrual	$ 1,950				1,950
Net Earnings	2,897			$ 5,496	9,729	$ 25,653
Balance at End of Period	449				449
Total Stockholders' Equity	$ 462,191				$ 462,191		$ 461,514
Share repurchased during period	0				0
Number of shares authorized to be purchased	717,300				717,300
Previous treatment of reversal of accrual amount		$ 3,000	3,000		$ 3,000
Common Stock [Member]
Stockholders' Equity [Line Items]
Balance at Beginning of Period			444		444
Stock Option Exercises					5
Balance at End of Period	$ 449				449
Capital In Excess Of Par Value [Member]
Stockholders' Equity [Line Items]
Balance at Beginning of Period			24,859		24,859
Stock Compensation Expense					4,042
Shares Redeemed to Settle Employee Taxes					(393)
Stock Option Exercises					727
Balance at End of Period	29,235				29,235
Retained Earnings [Member]
Stockholders' Equity [Line Items]
Balance at Beginning of Period			437,154		437,154
Dividends Declared to Stockholders					(13,433)
Net Earnings					9,729
Balance at End of Period	435,400				435,400
Accumulated Other Comprehensive Loss [Member]
Stockholders' Equity [Line Items]
Balance at Beginning of Period			$ (2,893)		(2,893)
Balance at End of Period	(2,893)				(2,893)
Restatement Adjustment [Member]
Stockholders' Equity [Line Items]
Balance at End of Period	$ 439,104				$ 439,104

Inventories (Schedule Of Inventories) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Mar. 31, 2011
Inventories [Line Items]
Inventories	$ 113,613	$ 115,237
Raw Materials And Material-In-Progress [Member]
Inventories [Line Items]
Inventories	39,253	35,118
Finished Cement [Member]
Inventories [Line Items]
Inventories	9,278	11,540
Gypsum Wallboard [Member]
Inventories [Line Items]
Inventories	6,093	6,347
Aggregates [Member]
Inventories [Line Items]
Inventories	12,661	12,419
Paperboard [Member]
Inventories [Line Items]
Inventories	1,823	5,274
Repair Parts And Supplies [Member]
Inventories [Line Items]
Inventories	40,334	41,659
Fuel And Coal [Member]
Inventories [Line Items]
Inventories	$ 4,171	$ 2,880

Accrued Expenses (Schedule Of Accrued Expenses) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Mar. 31, 2011
Accrued Expenses [Abstract]
Payroll and Incentive Compensation	$ 7,748	$ 7,712
Benefits	8,571	7,988
Interest	2,050	7,003
Insurance	5,842	6,639
Property Taxes	3,600	4,033
Arbitration Loss	8,063
Other	6,582	6,636
Accrued expenses, total	$ 42,456	$ 40,011

- 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

Computation Of Earnings Per Share (Schedule Of Calculation Of Basic And Diluted Common Shares Outstanding) (Details) - shares	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Computation Of Earnings Per Share [Abstract]
Weighted-Average Shares of Common Stock Outstanding	44,212,098	43,887,833	44,197,540	43,858,606
Assumed Exercise of Outstanding Dilutive Options	306,632	884,679	634,265	1,065,195
Less Shares Repurchased from Assumed Proceeds of Assumed Exercised Options	(205,175)	(666,876)	(506,070)	(817,976)
Restricted Shares	82,427	93,485	97,732	94,733
Weighted-Average Common and Common Equivalent Shares Outstanding	44,395,982	44,199,121	44,423,467	44,200,558
Shares Excluded Due to Anti-dilution Effects	3,391,168	2,741,721	2,978,930	2,555,217

- 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 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 2: 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 3: 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 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 Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 6: 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 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 8: 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.

+ Details

- 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 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 2: 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.

Reference 3: 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 4: 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 5: 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=6920599&loc=d3e1448-109256

Reference 6: 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 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.

+ Details

Pension And Employee Benefit Plans (Components Of Net Periodic Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Pension And Employee Benefit Plans [Abstract]
Service Cost - Benefits Earned during the Period	$ 139	$ 148	$ 417	$ 418
Interest Cost of Benefit Obligations	265	283	795	795
Expected Return on Plan Assets	(291)	(461)	(873)	(873)
Recognized Net Actuarial Loss	86	122	258	266
Amortization of Prior-Service Cost	20	4	60	60
Net Periodic Pension Cost	$ 219	$ 96	$ 657	$ 666

- Definition

The net increase or decrease of changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.

+ References

+ Details

- 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

+ 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 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 2: 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 3: 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 4: 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=6962843&loc=d3e1928-114920

Reference 5: 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=6962843&loc=d3e1928-114920

Reference 6: 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

+ Details

Share-Based Employee Compensation (Narrative) (Details)	3 Months Ended				9 Months Ended
Share-Based Employee Compensation (Narrative) (Details)	Mar. 31, 2012	Dec. 31, 2011 USD ($) shares	Jun. 30, 2011 shares	Dec. 31, 2010 USD ($)	Dec. 31, 2011 USD ($) years shares	Dec. 31, 2010 USD ($)	Aug. 31, 2009 shares
Share-Based Employee Compensation [Line Items]
Aggregate intrinsic value of exercisable options \| $		$ 0			$ 0
Total intrinsic value of options exercised \| $					$ 600,000
Number of shares available future grant \| shares							3,000,000
Number of options granted by the Board of Directors \| shares					474,124
Share-based compensation award expiration term in years			ten
Stock Options [Member]
Share-Based Employee Compensation [Line Items]
Unrecognized compensation cost \| $		4,100,000			$ 4,100,000
Weighted-average period of recognition of unrecognized compensation cost \| years					2.3
Stock option expense \| $		$ 500,000		$ 300,000	$ 1,100,000	$ 1,500,000
Assessment of future satisfaction with performance conditions \| $					$ 1,300,000
Number of shares available future grant \| shares		1,739,081			1,739,081
Restricted Stock [Member]
Share-Based Employee Compensation [Line Items]
Unrecognized compensation cost \| $		$ 15,300,000			$ 15,300,000
Weighted-average period of recognition of unrecognized compensation cost \| years					5.2
Restricted stock option expense \| $		$ 800,000		300,000	$ 1,900,000	800,000
Number of shares available future grant \| shares		1,739,081			1,739,081
Number of shares granted by the Board of Directors \| shares			412,164
Average return on equity	12.00%
Stock Appreciation Rights (SARs) [Member]
Share-Based Employee Compensation [Line Items]
Number of shares available future grant \| shares		1,739,081			1,739,081
Restricted Stock Units (RSUs) [Member]
Share-Based Employee Compensation [Line Items]
Unrecognized compensation cost \| $		$ 2,200,000			$ 2,200,000
Weighted-average period of recognition of unrecognized compensation cost \| years					1.5
Stock option expense \| $		$ 400,000		$ 100,000	$ 1,100,000	$ 400,000
Number of shares available future grant \| shares		1,739,081			1,739,081
Board Of Directors [Member] \| Stock Options [Member]
Share-Based Employee Compensation [Line Items]
Number of options granted by the Board of Directors \| shares		121,295
Employee [Member] \| Stock Options [Member]
Share-Based Employee Compensation [Line Items]
Number of options granted by the Board of Directors \| shares			352,829

Share-Based Employee Compensation (Schedule Of Weighted-Average Assumptions Used To Value The Option Awards) (Details)	9 Months Ended
	Dec. 31, 2011 years
Share-Based Employee Compensation [Abstract]
Dividend Yield	2.00%
Expected Volatility	41.90%
Risk Free Interest Rate	2.50%
Expected Life	8.0

Share-Based Employee Compensation (Schedule Of Stock Option Activity) (Details) - $ / shares	9 Months Ended
	Dec. 31, 2011
Share-Based Employee Compensation [Abstract]
Number of Shares, Outstanding Options at Beginning of Period	3,323,786
Number of Shares, Granted	474,124
Number of Shares, Exercised	(53,751)
Number of Shares, Cancelled	(72,439)
Number of Shares, Outstanding Options at End of Period	3,671,720
Number of Shares, Options Exercisable at End of Period	1,860,895
Weighted-Average Exercise Price, Weighted-Average Fair Value of Options Granted during the Period
Weighted-Average Exercise Price, Weighted-Average Fair Value of Options Number of Shares, Granted during the Period	10.29
Weighted-Average Exercise Price, Outstanding Options at Beginning of Period	$ 35.60
Weighted-Average Exercise Price, Granted	26.41
Weighted-Average Exercise Price, Exercised	13.62
Weighted-Average Exercise Price, Cancelled	34.35
Weighted-Average Exercise Price, Outstanding Options at End of Period	34.76
Weighted-Average Exercise Price, Options Exercisable at End of Period

Share-Based Employee Compensation (Schedule Of Stock Options Outstanding) (Details)	9 Months Ended
	Dec. 31, 2011 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding Options, Number of Shares Outstanding \| shares	3,671,720
Outstanding Options, Weighted-Average Remaining Contractual Life	3.77
Outstanding Options, Weighted-Average Exercise Price	$ 34.76
Exercisable Options, Number of Shares Outstanding \| shares	1,860,895
Exercisable Options, Weighted-Average Exercise Price	$ 27.21
$ 11.56 - $ 13.43 [Member]
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	$ 13.43
Outstanding Options, Number of Shares Outstanding \| shares	276,552
Outstanding Options, Weighted-Average Remaining Contractual Life	1.11
Outstanding Options, Weighted-Average Exercise Price	$ 12.17
Exercisable Options, Number of Shares Outstanding \| shares	276,552
Exercisable Options, Weighted-Average Exercise Price	$ 12.17
$ 23.17 - $ 30.74 [Member]
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
Outstanding Options, Number of Shares Outstanding \| shares	1,688,984
Outstanding Options, Weighted-Average Remaining Contractual Life	5.57
Outstanding Options, Weighted-Average Exercise Price	$ 26.88
Exercisable Options, Number of Shares Outstanding \| shares	1,239,434
Exercisable Options, Weighted-Average Exercise Price	$ 26.44
$ 34.09 -$ 40.78 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	34.09
Range of Exercise Prices, Upper Range	$ 40.78
Outstanding Options, Number of Shares Outstanding \| shares	308,170
Outstanding Options, Weighted-Average Remaining Contractual Life	1.92
Outstanding Options, Weighted-Average Exercise Price	$ 37.91
Exercisable Options, Number of Shares Outstanding \| shares	277,770
Exercisable Options, Weighted-Average Exercise Price	$ 38.07
$ 47.53 - $ 62.83 [Member]
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
Outstanding Options, Number of Shares Outstanding \| shares	1,398,014
Outstanding Options, Weighted-Average Remaining Contractual Life	2.53
Outstanding Options, Weighted-Average Exercise Price	$ 48.06
Exercisable Options, Number of Shares Outstanding \| shares	67,139
Exercisable Options, Weighted-Average Exercise Price	$ 58.42

Long-Term Debt (Narrative) (Details) - USD ($)		9 Months Ended
Long-Term Debt (Narrative) (Details) - USD ($)	Dec. 16, 2011	Dec. 31, 2011	Oct. 02, 2007	Nov. 15, 2005
Debt Instrument [Line Items]
Letters of credit outstanding, amount		$ 9,400,000
Consolidated funded debt ratio		3.50 to 1.0 or less
Additional borrowings		$ 55,000,000
Senior notes, permitted minimum aggregate principal amount prepayment without penalty		10.00%
Senior notes, principal amount to be paid		100.00%
Senior notes, calculation of make-whole amount, description		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
Existing Credit Facility [Member]
Debt Instrument [Line Items]
Bank credit facility, maturity date		2015
New Credit Facility [Member]
Debt Instrument [Line Items]
Bank credit facility, maturity date		December 16, 2015
Bank credit facility, principal balance		$ 300,000,000
Bank credit facility, interest rate description		(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 <font class="_mt" size="1"><sup style="position: relative; bottom: 0.8ex; vertical-align: baseline;">1</sup></font><font class="_mt" size="2">/</font><font class="_mt" size="1">2</font><font style="font-family: Times New Roman;" class="_mt" size="2">% per annum plus an agreed margin (ranging from 0 to 125 basis points).</font>
Consolidated funded indebtedness ratio		3.5 or less
Interest coverage ratio		at least 2.5
Restricted payments maximum amount allowed for cash dividend		$ 50,000,000
Restricted payments maximum consolidated funded indebtedness ratio		3.0
Bank credit facility, borrowings available		$ 206,600,000
2005 Note Purchase Agreement [Member]
Debt Instrument [Line Items]
Senior notes, sale				$ 200,000,000
Senior notes, repurchased amount		$ 81,100,000
Senior notes, payment terms		payable semi-annually on May 15 and November 15 of each year until all principal is paid for the respective tranche.
2007 Note Purchase Agreement [Member]
Debt Instrument [Line Items]
Senior notes, sale			$ 200,000,000
Senior notes, repurchased amount		$ 122,000,000
Senior notes, payment terms		payable semi-annually on April 2 and October 2 of each year until all principal is paid for the respective tranche.
Shelf Agreement [Member]
Debt Instrument [Line Items]
Senior unsecured notes		$ 75,000,000
Repayment term, years		two
Series 2007A Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes, sale	$ 59,100,000
Senior notes, repurchased amount	60,200,000
Accrued interest expense	300,000
Series 2005A Senior Notes [Member]
Debt Instrument [Line Items]
Senior notes, sale	29,000,000
Senior notes, repurchased amount	29,600,000
Accrued interest expense	$ 400,000
Letter Of Credit [Member] \| New Credit Facility [Member]
Debt Instrument [Line Items]
Bank credit facility, principal balance		$ 50,000,000
Bank credit facility, one time fee		0.125%
Letters of credit outstanding, amount		$ 9,400,000

Long-Term Debt (Schedule Of Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Mar. 31, 2011
Debt Instrument [Line Items]
Total Debt	$ 280,936	$ 287,000
Less: Current Portion of Long-term Debt	(4,677)
Long-Term Debt	276,259	287,000
Bank Credit Facility [Member]
Debt Instrument [Line Items]
Total Debt	84,000	2,000
Senior Notes [Member]
Debt Instrument [Line Items]
Total Debt	$ 196,936	$ 285,000

Long-Term Debt (Schedule Of Long-Term Debt) (Details) $ in Millions	9 Months Ended
	Dec. 31, 2011 USD ($)
2005 Note Purchase Agreement [Member] \| Series 2005A Tranche A [Member]
Debt Instrument [Line Items]
Principal	$ 4.7
Maturity Date	Nov. 15, 2012
Interest Rate	5.25%
2005 Note Purchase Agreement [Member] \| Series 2005A Tranche B [Member]
Debt Instrument [Line Items]
Principal	$ 57.0
Maturity Date	Nov. 15, 2015
Interest Rate	5.38%
2005 Note Purchase Agreement [Member] \| Series 2005A Tranche C [Member]
Debt Instrument [Line Items]
Principal	$ 57.2
Maturity Date	Nov. 15, 2017
Interest Rate	5.48%
2007 Note Purchase Agreement [Member] \| Series 2007A Tranche A [Member]
Debt Instrument [Line Items]
Principal	$ 9.5
Maturity Date	Oct. 02, 2014
Interest Rate	6.08%
2007 Note Purchase Agreement [Member] \| Series 2007A Tranche B [Member]
Debt Instrument [Line Items]
Principal	$ 8.0
Maturity Date	Oct. 02, 2016
Interest Rate	6.27%
2007 Note Purchase Agreement [Member] \| Series 2007A Tranche C [Member]
Debt Instrument [Line Items]
Principal	$ 24.0
Maturity Date	Oct. 02, 2017
Interest Rate	6.36%
2007 Note Purchase Agreement [Member] \| Series 2007A Tranche D [Member]
Debt Instrument [Line Items]
Principal	$ 36.5
Maturity Date	Oct. 02, 2019
Interest Rate	6.48%

Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
	Jun. 30, 2010	Dec. 31, 2011	Dec. 31, 2011	Jun. 30, 2011	Jul. 31, 2010
Commitments And Contingencies [Abstract]
Contingent liabilities under outstanding letters of credit		$ 9,400	$ 9,400
Contingent liability for performance bonds required by states, municipalities and related agencies		10,300	10,300
Notice of Deficiency received for taxes and penalties related to IRS audit	$ 71,500
Notice of Deficiency received for taxes and penalties including interest	98,700	97,900	97,900
Taxes and penalties including interest deposited with IRS	$ 75,000
Taxes and penalties amount refunded from IRS			800
Remaining taxes and penalties including interest deposited with IRS					$ 23,700
Payment required for non-appealable arbitration award				$ 6,900
Amount of attorney's fees and arbitration costs				$ 1,200
Loss on arbitration ruling		9,117	9,117
Arbitration loss		$ 8,063	$ 8,063

Commitments And Contingencies (Schedule Of Insurance Accruals And Payments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Commitments And Contingencies [Abstract]
Accrual Balances at Beginning of Period	$ 6,294	$ 6,846	$ 6,639	$ 6,384
Insurance Expense Accrued	630	610	1,783	2,156
Payments	(1,082)	(545)	(2,580)	(1,629)
Accrual Balance at End of Period	$ 5,842	$ 6,911	$ 5,842	$ 6,911

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Effective tax rate			23.00%
Income tax benefit (expense)	$ 2,408	$ (1,124)	$ 462	$ (5,955)
Payment received from IRS			$ 9,100

Fair Value Of Financial Instruments (Schedule Of Fair Value Of Senior Notes) (Details) $ in Thousands	Dec. 31, 2011 USD ($)
Series 2005A Tranche A [Member]
Fair Value Of Financial Instruments [Line Items]
Fair value of Senior Notes	$ 4,771
Series 2005A Tranche B [Member]
Fair Value Of Financial Instruments [Line Items]
Fair value of Senior Notes	59,651
Series 2005A Tranche C [Member]
Fair Value Of Financial Instruments [Line Items]
Fair value of Senior Notes	59,419
Series 2007A Tranche A [Member]
Fair Value Of Financial Instruments [Line Items]
Fair value of Senior Notes	10,108
Series 2007A Tranche B [Member]
Fair Value Of Financial Instruments [Line Items]
Fair value of Senior Notes	8,492
Series 2007A Tranche C [Member]
Fair Value Of Financial Instruments [Line Items]
Fair value of Senior Notes	25,392
Series 2007A Tranche D [Member]
Fair Value Of Financial Instruments [Line Items]
Fair value of Senior Notes	$ 38,599

Segment Information (Narrative) (Details) $ in Millions	9 Months Ended
Segment Information (Narrative) (Details) $ in Millions	Dec. 31, 2011 USD ($)
Segment Reporting Information [Line Items]
Joint Venture share percentage	50.00%
Proportionate consolidation of share of the Joint Venture's revenues and operating earnings	50.00%
Investment in Joint Venture	$ 10.0
Bernalillo [Member]
Segment Reporting Information [Line Items]
Carrying value of plant	7.6
Carrying value of equipment	$ 1.4

Segment Information (Schedule Of Financial Information Related To Operations By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Revenues, Sub-total	$ 155,824	$ 133,089	$ 477,040	$ 454,069
Less: Intersegment Revenues	(11,595)	(10,038)	(34,331)	(31,321)
Revenues, including Joint Venture	144,229	123,051	442,709	422,748
Less: Joint Venture	(20,633)	(19,181)	(64,487)	(55,949)
Net Revenues	123,596	103,870	378,222	366,799
Cement [Member]
Segment Reporting Information [Line Items]
Revenues, Sub-total	61,510	54,876	194,208	185,151
Less: Intersegment Revenues	(803)	(1,394)	(3,044)	(3,550)
Gypsum Wallboard [Member]
Segment Reporting Information [Line Items]
Revenues, Sub-total	54,063	45,389	156,386	153,903
Paperboard [Member]
Segment Reporting Information [Line Items]
Revenues, Sub-total	30,001	22,381	90,414	80,309
Less: Intersegment Revenues	(10,594)	(8,491)	(30,728)	(27,311)
Concrete And Aggregates [Member]
Segment Reporting Information [Line Items]
Revenues, Sub-total	10,250	10,443	36,032	34,706
Less: Intersegment Revenues	$ (198)	$ (153)	$ (559)	$ (460)

Segment Information (Schedule Of Financial Information Related To Intersegment Revenue) (Details)
$ in Thousands

3 Months Ended

9 Months Ended

Dec. 31, 2011

USD ($)

Dec. 31, 2010

USD ($)

Dec. 31, 2011

USD ($)

Dec. 31, 2010

USD ($)

Segment Reporting Information [Line Items]

Intersegment Revenues

$ 11,595

$ 10,038

$ 34,331

$ 31,321

Operating Earnings

(464)

192

(428)

1,084

Operating Earnings, Sub-total

19,783

15,228

46,293

56,772

Corporate General and Administrative

(3,873)

(3,942)

(12,463)

(12,060)

Loss on Arbitration Ruling

(9,117)

Earnings Before Interest and Income Taxes

6,793

11,286

24,713

44,712

Premium Paid on Debt Retirement

(2,094)

Interest Expense, net

(4,210)

(4,666)

(13,352)

(13,104)

Earnings Before Income Taxes

489

6,620

9,267

31,608

Capital Expenditure, Other

^[1]

Capital Expenditure, Total

^[1]

15,428

6,276

22,944

11,743

Depreciation, Depletion and Amortization, Other, net

^[1]

294

147

684

425

Depreciation, Depletion and Amortization, Total

^[1]

$ 12,671

$ 12,127

$ 37,354

$ 36,966

Wholly-Owned Operations [Member]

Segment Reporting Information [Line Items]

Cement Sales Volume (M Tons)

497

408

1,534

1,482

Joint Venture [Member]

Segment Reporting Information [Line Items]

Cement Sales Volume (M Tons)

203

211

657

614

Cement [Member]

Segment Reporting Information [Line Items]

Intersegment Revenues

$ 803

$ 1,394

$ 3,044

$ 3,550

Cement Sales Volume (M Tons)

700

619

2,191

2,096

Operating Earnings

$ 15,493

$ 15,257

$ 39,392

$ 41,017

Operating Earnings, Sub-total

15,493

15,257

39,392

41,017

Capital Expenditure, Other

^[1]

1,723

3,484

5,931

6,763

Depreciation, Depletion and Amortization, Other, net

^[1]

3,821

3,474

11,254

10,814

Cement [Member] | Wholly-Owned Operations [Member]

Segment Reporting Information [Line Items]

Operating Earnings, Sub-total

7,717

8,061

18,232

23,149

Cement [Member] | Joint Venture [Member]

Segment Reporting Information [Line Items]

Operating Earnings, Sub-total

7,776

7,196

21,160

17,868

Gypsum Wallboard [Member]

Segment Reporting Information [Line Items]

Operating Earnings

228

(2,535)

(4,074)

3,961

Capital Expenditure, Other

^[1]

1,174

658

3,188

1,213

Depreciation, Depletion and Amortization, Other, net

^[1]

5,314

5,321

15,798

16,243

Paperboard [Member]

Segment Reporting Information [Line Items]

Intersegment Revenues

10,594

8,491

30,728

27,311

Operating Earnings

5,146

2,160

12,214

9,787

Capital Expenditure, Other

^[1]

532

803

754

860

Depreciation, Depletion and Amortization, Other, net

^[1]

2,131

2,198

6,383

6,717

Concrete And Aggregates [Member]

Segment Reporting Information [Line Items]

Intersegment Revenues

198

153

559

460

Operating Earnings

(620)

154

(811)

923

Aggregates [Member]

Segment Reporting Information [Line Items]

Capital Expenditure, Other

^[1]

11,870

1,200

12,751

2,645

Depreciation, Depletion and Amortization, Other, net

^[1]

851

758

2,477

2,053

Concrete [Member]

Segment Reporting Information [Line Items]

Capital Expenditure, Other

^[1]

129

131

271

183

Depreciation, Depletion and Amortization, Other, net

^[1]

$ 260

$ 229

$ 758

$ 714

[1]	Basis conforms with equity method accounting.

Segment Information (Schedule Of Identifiable Assets) (Details) - USD ($)
$ in Thousands

Dec. 31, 2011

Mar. 31, 2011

Segment Reporting Information [Line Items]

Identifiable Assets, Total

^[1]

$ 985,149

$ 985,810

Cement [Member]

Segment Reporting Information [Line Items]

Identifiable Assets, Total

^[1]

310,356

304,693

Gypsum Wallboard [Member]

Segment Reporting Information [Line Items]

Identifiable Assets, Total

^[1]

432,843

446,174

Paperboard [Member]

Segment Reporting Information [Line Items]

Identifiable Assets, Total

^[1]

141,413

144,434

Aggregates [Member]

Segment Reporting Information [Line Items]

Identifiable Assets, Total

^[1]

50,319

39,237

Concrete [Member]

Segment Reporting Information [Line Items]

Identifiable Assets, Total

^[1]

12,578

12,560

Corporate And Other [Member]

Segment Reporting Information [Line Items]

Identifiable Assets, Total

^[1]

$ 37,640

$ 38,712

[1]	Basis conforms with equity method accounting.

Segment Information (Schedule Of Goodwill) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Mar. 31, 2011
Segment Reporting Information [Line Items]
Goodwill	$ 132,515	$ 132,515
Cement [Member]
Segment Reporting Information [Line Items]
Goodwill	8,359	8,359
Gypsum Wallboard [Member]
Segment Reporting Information [Line Items]
Goodwill	116,618	116,618
Paperboard [Member]
Segment Reporting Information [Line Items]
Goodwill	$ 7,538	$ 7,538

- Definition

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 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 2: 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 3: 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 4: 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 5: 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=6905597&loc=d3e13816-109267

Reference 6: 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 7: 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 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

Segment Information (Schedule Of Summarized Financial Information For The Joint Venture Not Consolidated) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Revenues	$ 123,596	$ 103,870	$ 378,222	$ 366,799
Gross Margin	12,471	7,840	25,561	37,820
Joint Venture [Member]
Segment Reporting Information [Line Items]
Revenues	35,558	33,950	113,353	100,253
Gross Margin	16,487	15,459	45,439	38,820
Earnings Before Income Taxes	$ 15,552	$ 14,391	$ 42,320	$ 35,736

Segment Information (Schedule Of Assets And Liabilities Of The Joint Venture Not Consolidated) (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Mar. 31, 2011
Segment Reporting Information [Line Items]
Current Assets	$ 183,937	$ 174,626
Current Liabilities	83,869	70,350
Joint Venture [Member]
Segment Reporting Information [Line Items]
Current Assets	46,038	42,541
Non-Current Assets	42,678	33,457
Current Liabilities	$ 17,038	$ 10,296

Interest Expense (Schedule Of Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Interest Expense [Abstract]
Interest (Income)	$ (3)	$ (2)	$ (5)	$ (6)
Interest Expense	4,425	4,402	13,340	13,300
Interest Expense (Income) - Income Taxes	(426)	213	(426)	(333)
Other Expenses	214	53	443	143
Interest Expense, net	$ 4,210	$ 4,666	$ 13,352	$ 13,104