Earnings before interest and taxes.

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Sales revenue from joint venture.

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Cement sales volumes in tons.

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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

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Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

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The net result for the period of deducting operating expenses from operating revenues.

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Amount of income (expense) related to nonoperating activities, classified as other.

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- Definition

Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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

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No definition available.

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Financial Information Related to Operations by Segment (Detail) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2020 USD ($) kT	Mar. 31, 2019 USD ($) kT	Mar. 31, 2018 USD ($) kT
Segment Reporting Information [Line Items]
Revenue	$ 315,442	$ 350,249	$ 414,526	$ 370,597	$ 284,701	$ 333,285	$ 381,499	$ 393,756	$ 1,450,814	$ 1,393,241	$ 1,386,520
Less: Joint Venture Revenue									(113,536)	(104,493)	(105,884)
Operating Earnings									373,847	365,133	382,175
Corporate General and Administrative Expense									(65,410)	(37,371)	(41,205)
Impairment Losses									(224,267)	(220,265)
Litigation Settlements and Losses										(1,800)	(45,098)
Other Non-Operating Income (Loss)									(25)	2,412	3,728
Earnings Before Interest and Income Taxes									84,145	108,109	299,600
Interest Expense, Net									(38,421)	(28,374)	(27,638)
Earnings Before Income Taxes	45,218	(148,565)	$ 94,210	$ 54,861	(171,597)	$ 74,518	$ 91,793	$ 85,021	45,724	79,735	271,962
Capital Expenditures									132,119	168,873	131,957
Depreciation, Depletion and Amortization									113,518	122,535	114,015
Identifiable Assets	2,961,020				2,169,163				2,961,020	2,169,163	2,368,003
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue									1,649,666	1,580,287	1,580,528
Operating Earnings									181,330	164,782	179,151
Operating Segments [Member] \| Wholly-Owned [Member]
Segment Reporting Information [Line Items]
Operating Earnings									138,745	126,217	135,732
Operating Segments [Member] \| Joint Venture [Member]
Segment Reporting Information [Line Items]
Operating Earnings									42,585	38,565	43,419
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue									(85,316)	(82,553)	(88,124)
Revenue									(85,316)	(82,553)	(88,124)
Other, net [Member]
Segment Reporting Information [Line Items]
Capital Expenditures										6,107	461
Identifiable Assets	271,145				37,434				271,145	37,434	60,962
Cement [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue									$ 752,002	$ 656,759	$ 651,750
Cement Sales Volume \| kT									5,931	5,340	5,365
Operating Earnings									$ 181,330	$ 164,782	$ 179,151
Capital Expenditures									44,776	76,504	45,088
Depreciation, Depletion and Amortization									59,081	52,802	50,891
Identifiable Assets	1,980,306				1,289,468				$ 1,980,306	$ 1,289,468	$ 1,247,504
Cement [Member] \| Operating Segments [Member] \| Wholly-Owned [Member]
Segment Reporting Information [Line Items]
Cement Sales Volume \| kT									4,975	4,441	4,453
Cement [Member] \| Operating Segments [Member] \| Joint Venture [Member]
Segment Reporting Information [Line Items]
Cement Sales Volume \| kT									956	899	912
Cement [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue									$ (21,499)	$ (14,408)	$ (16,442)
Concrete and Aggregates [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue									182,775	140,173	157,013
Operating Earnings									17,558	12,866	17,854
Capital Expenditures									11,898	6,649	4,977
Depreciation, Depletion and Amortization									11,142	8,176	7,931
Identifiable Assets	136,041				95,084				136,041	95,084	104,851
Concrete and Aggregates [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue									(1,502)	(1,422)	(1,335)
Gypsum Wallboard [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue									508,145	532,712	491,779
Operating Earnings									154,614	180,831	158,551
Capital Expenditures									12,771	10,724	19,382
Depreciation, Depletion and Amortization									20,320	20,020	18,179
Identifiable Assets	375,946				372,206				375,946	372,206	386,041
Paperboard [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue									159,963	167,656	181,742
Operating Earnings									34,979	35,349	32,758
Capital Expenditures									62,528	16,603	5,177
Depreciation, Depletion and Amortization									8,945	8,541	8,694
Identifiable Assets	183,288				138,614				183,288	138,614	123,819
Paperboard [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue									(62,315)	(66,723)	(70,347)
Oil and Gas Proppants [Member]
Segment Reporting Information [Line Items]
Impairment Losses		$ (224,300)			(220,300)
Oil and Gas Proppants [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue									46,781	82,987	98,244
Operating Earnings									(14,634)	(28,695)	(6,139)
Capital Expenditures									146	52,286	56,872
Depreciation, Depletion and Amortization									11,310	31,328	26,872
Identifiable Assets	$ 14,294				$ 236,357				14,294	236,357	444,826
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Depreciation, Depletion and Amortization									$ 2,720	$ 1,668	$ 1,448