Eagle Materials (EXP) 10-K 22 May 20 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Billions	12 Months Ended
	Mar. 31, 2020	May 18, 2020	Sep. 30, 2019
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Trading Symbol	EXP
Entity Registrant Name	EAGLE MATERIALS INC.
Entity Central Index Key	0000918646
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		41,616,959
Entity Public Float			$ 3.7
Title of 12(b) Security	Common Stock (par value $.01 per share)
Security Exchange Name	NYSE
Entity File Number	1-12984
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	75-2520779
Entity Address, Address Line One	5960 Berkshire Lane
Entity Address, Address Line Two	Suite 900
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75225
City Area Code	214
Local Phone Number	432-2000
Document Annual Report	true
Document Transition Report	false
Documents Incorporated by Reference	Portions of the Proxy Statement for the Annual Meeting of Stockholders of Eagle Materials Inc. to be held on August 5, 2020 are incorporated by reference in Part III of this Report.

Consolidated Statements of Earn

Consolidated Statements of Earnings - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenue	$ 1,450,814	$ 1,393,241	$ 1,386,520
Cost of Goods Sold	1,119,552	1,066,673	1,047,764
Gross Profit	331,262	326,568	338,756
Equity in Earnings of Unconsolidated Joint Venture	42,585	38,565	43,419
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
Interest Expense, Net	(38,421)	(28,374)	(27,638)
Earnings Before Income Taxes	45,724	79,735	271,962
Income Taxes	25,170	(10,875)	(15,330)
Net Earnings	$ 70,894	$ 68,860	$ 256,632
EARNINGS PER SHARE
Basic	$ 1.69	$ 1.48	$ 5.33
Diluted	$ 1.68	$ 1.47	$ 5.28
AVERAGE SHARES OUTSTANDING
Basic	42,021,892	46,620,894	48,141,226
Diluted	42,285,343	46,932,380	48,645,986
CASH DIVIDENDS PER SHARE	$ 0.40	$ 0.40	$ 0.40

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net Earnings	$ 70,894	$ 68,860	$ 256,632
Net Actuarial Change in Defined Benefit Plans:
Unrealized gain during the period, net of tax expense of $41, $68, and $1,995	131	224	3,407
Amortization of net actuarial loss, net of tax (expense) benefit of ($120), $149, and $301	(396)	472	955
Reclassification of Income Tax Effects to Retained Earnings			(978)
Comprehensive Earnings	$ 70,629	$ 69,556	$ 260,016

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Earnings (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Unrealized gain during the period, tax expense	$ 41	$ 68	$ 1,995
Amortization of Net Actuarial Loss, tax benefit	$ (120)	$ 149	$ 301

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Current Assets -
Cash and Cash Equivalents	$ 118,648	$ 8,601
Accounts and Notes Receivable, net	151,786	128,722
Inventories	272,508	275,194
Income Tax Receivable	128,413	5,480
Prepaid and Other Assets	6,862	9,624
Total Current Assets	678,217	427,621
Property, Plant, and Equipment, net	1,762,109	1,426,939
Notes Receivable	9,139	2,898
Investment in Joint Venture	73,958	64,873
Operating Lease Right-of-Use Assets	30,530
Goodwill and Intangible Assets, net	396,463	229,115
Other Assets	10,604	17,717
Total Assets	2,961,020	2,169,163
Current Liabilities -
Accounts Payable	86,197	80,884
Accrued Liabilities	73,293	61,949
Operating Lease Liabilities	10,207
Current Portion of Long-term Debt		36,500
Total Current Liabilities	169,697	179,333
Long-term Debt	1,567,315	655,092
Noncurrent Operating Lease Liabilities	49,809
Other Long-term Liabilities	39,689	34,492
Deferred Income Taxes	166,667	90,759
Total Liabilities	1,993,177	959,676
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 41,649,041 and 45,117,393 Shares, respectively.	416	451
Capital in Excess of Par Value	10,943
Accumulated Other Comprehensive Losses	(3,581)	(3,316)
Retained Earnings	960,065	1,212,352
Total Stockholders’ Equity	967,843	1,209,487
Liabilities and Stockholders' Equity, Total	$ 2,961,020	$ 2,169,163

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2020	Mar. 31, 2019
Statement Of Financial Position [Abstract]
Preferred Stock, Par Value	$ 0.01	$ 0.01
Preferred Stock, Authorized	5,000,000	5,000,000
Preferred Stock, Issued	0	0
Common Stock, Par Value	$ 0.01	$ 0.01
Common Stock, Authorized	100,000,000	100,000,000
Common Stock, Issued	41,649,041	45,117,393
Common Stock, Outstanding	41,649,041	45,117,393

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net Earnings	$ 70,894	$ 68,860	$ 256,632
Adjustments to Reconcile Net Earnings to Net Cash Provided by Operating Activities, Net of Effect of Non-Cash Activity:
Depreciation, Depletion and Amortization	113,518	122,535	114,015
Impairment Losses	224,267	220,265
Deferred Income Tax Provision	75,987	(28,371)	(49,354)
Stock Compensation Expense	19,823	15,109	14,079
Equity in Earnings of Unconsolidated Joint Venture	(42,585)	(38,565)	(43,419)
Distributions from Joint Venture	33,500	34,250	31,500
Changes in Operating Assets and Liabilities:
Accounts and Notes Receivable	(25,005)	10,180	(2,560)
Inventories	26,729	(19,016)	(5,114)
Accounts Payable and Accrued Liabilities	17,265	(31,949)	24,173
Other Assets	7,841	(3,284)	4,196
Income Taxes Payable (Receivable)	(122,933)	270	(6,483)
Net Cash Provided by Operating Activities	399,301	350,284	337,665
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant, and Equipment	(132,119)	(168,873)	(131,957)
Acquisition Spending	(699,361)		(36,761)
Proceeds from Sales of Property, Plant, and Equipment	400	2,281
Net Cash Used in Investing Activities	(831,080)	(166,592)	(168,718)
CASH FLOWS FROM FINANCING ACTIVITIES
Increase in Revolving Credit Facility	250,000	70,000	15,000
Repayment of Private Placement Senior Unsecured Notes	(36,500)		(81,214)
Issuance of Term Loan	665,000
Dividends Paid to Stockholders	(17,142)	(18,927)	(19,438)
Purchase and Retirement of Common Stock	(313,887)	(271,988)	(61,078)
Proceeds from Stock Option Exercises	3,298	2,103	24,264
Shares Redeemed to Settle Employee Taxes on Stock Compensation	(4,063)	(4,347)	(4,974)
Payment of Debt Issuance Costs	(4,880)
Net Cash Provided by (Used in) Financing Activities	541,826	(223,159)	(127,440)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	110,047	(39,467)	41,507
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	8,601	48,068	6,561
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 118,648	$ 8,601	$ 48,068

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Losses [Member]
Beginning balance at Mar. 31, 2017	$ 1,203,450	$ 485	$ 149,014	$ 1,061,347	$ (7,396)
Net Earnings	256,632			256,632
Stock Option Exercises and Restricted Share Vesting	24,264	3	24,261
Purchase and Retirement of Common Stock	(61,078)	(5)	(61,073)
Dividends to Stockholders	(19,404)			(19,404)
Stock Compensation Expense	14,079		14,079
Cumulative Impact of the Adoption of ASU 2016-09			713	(713)
Reclassification of Income Tax Effects to Retained Earnings				978	(978)
Shares Redeemed to Settle Employee Taxes	(4,974)		(4,974)
Other	359		359
Unfunded Pension Liability, net of tax	4,362				4,362
Ending Balance at Mar. 31, 2018	1,417,690	483	122,379	1,298,840	(4,012)
Net Earnings	68,860			68,860
Stock Option Exercises and Restricted Share Vesting	2,104	1	2,103
Purchase and Retirement of Common Stock	(271,988)	(33)	(135,243)	(136,712)
Dividends to Stockholders	(18,636)			(18,636)
Stock Compensation Expense	15,108		15,108
Shares Redeemed to Settle Employee Taxes	(4,347)		(4,347)
Unfunded Pension Liability, net of tax	696				696
Ending Balance at Mar. 31, 2019	1,209,487	451		1,212,352	(3,316)
Net Earnings	70,894			70,894
Stock Option Exercises and Restricted Share Vesting	3,299	1	3,298
Purchase and Retirement of Common Stock	(313,887)	(36)	(8,114)	(305,737)
Dividends to Stockholders	(16,808)			(16,808)
Stock Compensation Expense	19,822		19,822
Cumulative Impact of the Adoption of ASU 2016-09	(636)			(636)
Shares Redeemed to Settle Employee Taxes	(4,063)		(4,063)
Unfunded Pension Liability, net of tax	(265)				(265)
Ending Balance at Mar. 31, 2020	$ 967,843	$ 416	$ 10,943	$ 960,065	$ (3,581)

SIGNIFICANT ACCOUNTING POLICIES

SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
SIGNIFICANT ACCOUNTING POLICIES	(A) Significant Accounting Policies Basis of Presentation The consolidated financial statements include the accounts of Eagle Materials Inc. and its majority-owned subsidiaries (the Company), which may be referred to as we, our, or us. All intercompany balances and transactions have been eliminated. The Company is a holding company whose assets consist of its investments in its subsidiaries, joint venture, intercompany balances, and holdings of cash and cash equivalents. The businesses of the consolidated group are conducted through the Company’s subsidiaries. The Company conducts one of its cement plant operations through a joint venture, Texas Lehigh Cement Company L.P., which is located in Buda, Texas (the Joint Venture). Our investment in the Joint Venture is accounted for using the equity method of accounting, and those results have been included for the same period as our March 31 fiscal year end. The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. We have been deemed an essential business with respect to the COVID-19 pandemic. While we have not yet experienced a material impact on our operations or financial position from this pandemic, there may be future effects on our business, both directly and indirectly, including with respect to customers, manufacturing operations, employees, suppliers, and the building materials and construction markets in general. Cash and Cash Equivalents Cash Equivalents include short-term, highly liquid investments with original maturities of three months or less and are recorded at cost, which approximates market value. Accounts and Notes Receivable Accounts and Notes Receivable have been shown net of the allowance for doubtful accounts of $12.4 million and $9.9 million at March 31, We had Notes Receivable totaling approximately $9.8 million at March 31, 2025 and 2026 Inventories Inventories are stated at the lower of average cost (including applicable material, labor, depreciation, and plant overhead) or net realizable value. Raw Materials and Materials-in-Progress include clinker, which is an intermediary product before it is ground into cement powder. Quantities of Raw Materials and Materials-in-Progress, Aggregates and coal inventories, are based on measured volumes, subject to estimation based on the size and location of the inventory piles, and converted to tonnage using standard inventory density factors. Inventories consist of the following: March 31, 2020 2019 (dollars in thousands) Raw Materials and Materials-in-Progress $ 110,558 $ 125,828 Finished Cement 43,538 27,826 Aggregates 8,416 7,351 Gypsum Wallboard 4,211 7,124 Paperboard 5,715 15,660 Frac Sand 386 2,557 Repair Parts and Supplies 88,095 80,676 Fuel and Coal 11,589 8,172 $ 272,508 $ 275,194 Property, Plant, and Equipment Property, Plant, and Equipment are stated at cost. Major renewals and improvements are capitalized and depreciated. Annual maintenance is expensed as incurred. Depreciation is provided on a straight-line basis over the estimated useful lives of depreciable assets and totaled $109.5 million, $118.2 million, and $109.6 million, for the fiscal years ended March 31, Plants 20 to 30 years Buildings 20 to 40 years Machinery and Equipment 3 to 25 years We periodically evaluate whether current events or circumstances indicate that the carrying value of our depreciable assets may not be recoverable. During fiscal years 2020 and 2019, we recorded impairments of approximately $187.6 million and $211.3 million, respectively, related to property and equipment in our Oil and Gas Proppants segment. See Impairment or Disposal of Long-lived and Intangible Assets below for more information about the impairments. Goodwill and Intangible Assets Goodwill We annually assess Goodwill in the fourth quarter of our fiscal year, or more frequently when indicators of impairment exist. Impairment testing for Goodwill is done at the reporting unit, which is consistent with the reportable segment. Goodwill is considered impaired if the carrying value of the reporting unit exceeds its fair value. Prior to performing the Step 1 quantitative analysis, we may, at our discretion, perform an optional qualitative analysis, or we may choose to proceed directly to the Step 1 quantitative analysis. The qualitative analysis considers the impact of the following events and circumstances on the reporting unit being tested: macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, and other relevant entity-specific events. If, as a result of this qualitative analysis, we conclude that it is more likely than not (a likelihood of greater than 50%) that the fair value of the reporting unit exceeds its carrying value, then an impairment does not exist and the quantitative Step 1 analysis is not required. If we are unable to conclude that it is more likely than not that the fair value of the reporting unit exceeds its carrying value, then we proceed to the quantitative Step 1 analysis. Step 1 of the quantitative test for impairment compares the fair value of the reporting unit to its carrying value. If the carrying value exceeds the fair value, then an impairment is indicated. If facts and circumstances related to our business change in subsequent years, we may choose to perform a quantitative analysis in those future years. If we perform a Step 1 analysis, and the carrying value of the reporting unit exceeds its fair value, then an impairment charge equal to the difference, not to exceed the total amount of Goodwill, is recorded. The fair values of the reporting units are estimated by using both the market and income approaches. The market approach considers market factors and certain multiples in comparison to similar companies, while the income approach uses discounted cash flows to determine the estimated fair values of the reporting units. We also perform an overall comparison of all reporting units to our market capitalization in order to test the reasonableness of our fair value calculations. We performed qualitative assessments of our Cement, Gypsum Wallboard, and Recycled Paperboard reporting units in the fourth quarter of fiscal years 2020 and 2019. As a result of these qualitative assessments, we determined that it was not more likely than not that an impairment existed; therefore, we did not perform a Step 1 quantitative impairment test in either of these two fiscal years. We performed a quantitative Step 1 impairment test on our Oil and Gas Proppants reporting unit during the fourth quarter of fiscal 2019. We estimated the reporting unit’s fair value using a discounted cash flow model. Key assumptions in the model were: estimated average net sales prices, sales volumes, and the estimated discount rate of 11%. Based on the results of the Step 1 impairment analysis, we concluded that the entire balance of Goodwill in the Oil and Gas Proppants reporting unit was impaired, and we recorded an impairment loss of approximately $6.8 million in the reporting unit in the fourth quarter of fiscal 2019. Intangible Assets Intangible Assets, including the impact of the impairment charges discussed above, at March 31, March 31, 2020 Amortization Period Cost Additions Accumulated Amortization Net (dollars in thousands) Goodwill and Intangible Assets: Customer Contracts and Relationships 15 years $ 72,260 $ 33,550 $ (62,950 ) $ 42,860 Permits 25-40 years 28,640 1,770 (9,889 ) 20,521 Trade Name 15 years — 1,500 (10 ) 1,490 Goodwill 198,371 133,221 — 331,592 Total Goodwill and Intangible Assets $ 299,271 $ 170,041 $ (72,849 ) $ 396,463 March 31, 2019 Amortization Period Cost Accumulated Amortization Impairment Net (dollars in thousands) Goodwill and Intangible Assets: Customer Contracts and Relationships 15 years $ 72,260 $ (61,009 ) $ (178 ) $ 11,073 Sales Contracts 4 years 2,500 (2,500 ) — — Permits 40 years 28,640 (8,968 ) — 19,672 Goodwill 205,211 — (6,841 ) 198,370 Total Goodwill and Intangible Assets $ 308,611 $ (72,477 ) $ (7,019 ) $ 229,115 Amortization expense of intangibles was $2.5 million, $4.3 million, and $4.4 million for the years ended March 31, Impairment or Disposal of Long-Lived and Intangible Assets We assess our long-lived assets, including mining and related assets, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset, or group of assets, may not be recoverable. Long-lived assets, or groups of assets, are evaluated for impairment at the lowest level for which cash flows are largely independent of the cash flows of other assts. We assess recoverability of assets, or group of assets, by comparing the carrying amount of an asset, or group of assets, to the future undiscounted net cash flows that we expect the asset, or group of assets, to generate. These impairment evaluations are significantly affected by estimates of future revenue, costs and expenses, and other factors. If the carrying value of the assets, or group of assets, exceeds the undiscounted cash flows, then an impairment is indicated. If such assets, or group of assets, are considered to be impaired, the impairment is recognized as the amount by which the carrying amount of the asset, or group of assets, exceeds the fair value of the asset, or group of assets. Any assets held for sale are reflected at the lower of their carrying amount or fair value less cost to sell. Fiscal 2019 During the latter part of fiscal 2019, continued declining sales prices, sales volume and operating results in our Oil and Gas Proppants business led management to conclude that impairment indictors were present. The decline in sales volume was primarily related to decreased demand from the Permian Basin. The decline in orders was due to several factors, including reduced completion budgets, limited pipeline take away capacity in the Permian Basin, and an increase in the usage of in-basin regional sand. The capacity for in-basin sand has increased in recent years, and certain of our customers have shifted their purchases from northern white sand to lower cost regional sand. Because of the continuing shift in demand to regional sand, and the decline in our operating results, we concluded in the fourth quarter of fiscal 2019 that the reduction in sales volumes and operating losses were other than temporary and that long-lived asset impairment indicators were present in our Oil and Gas Proppants segment. Prior to performing tests to determine whether an impairment was present, we grouped the long-lived assets of the segment into the lowest level where cash flows are generated, which is considered the operating facility or distribution level. We then performed recoverability tests on each group of assets using probability-weighted estimates of forecasted undiscounted cash flows over the remaining estimated life of each asset group under a variety of scenarios. Based on these forecasts we concluded that the carrying values exceeded the undiscounted cash flows for our New Auburn, Wisconsin and Corpus Christi, Texas operating facilities and several distribution facilities related to these facilities, indicating impairment. Our operating facility in Utica, Illinois, which had a net book value of approximately $135.7 million, was not considered impaired at that time, as the undiscounted cash flows related to this facility exceeded its carrying value. For those impaired asset groups, we calculated the estimated fair value of the New Auburn, Wisconsin facility and related distribution terminals, using a discounted cash flow model (Level 3) which utilized a weighted-average cost of capital determined from relevant market comparisons and adjusted for specific risks. We compared the results of the discounted cash flow analysis to other recent market information about the value of similar assets, and noted the amounts to be consistent. The analysis resulted in an impairment loss of approximately $174.1 million. For our Corpus Christi, Texas facility, we determined that the value of the real estate was the highest and best use of the property, resulting in an impairment loss of approximately $37.2 million. The above analyses resulted in an impairment loss of approximately $211.3 million. The following is a summary of the impairment on the net book value of the long-lived assets: Net Book Value Before Impairment Impairment Net Book Value After Impairment (dollars in thousands) Operating Facilities $ 331,520 $ (151,910 ) $ 179,610 Transload Locations 86,741 (59,354 ) 27,387 Real Estate 1,417 — 1,417 $ 419,678 $ (211,264 ) $ 208,414 After recording these impairment losses, which totaled $211.3 million, the adjusted carrying value of the impaired assets and total long-lived assets was approximately $72.7 million and $208.4 million, respectively. In addition to the impairment of the operating facilities and transload facilities, we also assessed Goodwill and Intangible Assets and Inventory for impairment. As part of this analysis, we wrote down Goodwill (as noted above), and certain Intangible Assets and Inventories. The following is a summary of Impairment Losses recognized during fiscal 2019, by line item: (dollars in thousands) Property, Equipment, and Real Estate $ 211,264 Goodwill 6,841 Inventories 1,982 Intangible Assets 178 $ 220,265 Fiscal 2020 During the second half of calendar year 2019, our Oil and Gas Proppants financial results were further negatively affected by a combination of low demand for our products and the increased use of in-basin sand instead of northern white frac sand. Faced with these dynamics, in connection with the preparation of our financial statements for the three and nine months ended December 31, 2019, we concluded that the reduction in sales volumes and operating losses were other than temporary and that long-lived asset impairment indicators were present in our Oil and Gas Proppants segment. Prior to performing recoverability tests to determine whether an impairment was present, we grouped the long-lived assets of the segment into the lowest level at which cash flows are generated, which is considered the operating facility or distribution level. We included the value of our Operating Lease Right-of-Use Assets that support the operating facilities within the value of the operating facility prior to performing our recoverability tests. We then performed recoverability tests on each group of assets using probability-weighted estimates of forecasted undiscounted cash flows over the remaining estimated life of each asset group under a variety of scenarios. Based on these forecasts, we concluded that the carrying values exceeded the undiscounted cash flows for our New Auburn, Wisconsin and Utica, Illinois operating facilities and several distribution facilities related to these operating facilities, indicating impairment. For the impaired asset groups, we calculated the estimated fair value of the operating facilities in New Auburn, Wisconsin, Utica, Illinois and related distribution terminals, using a discounted cash flow model (Level 3), which utilized a weighted-average cost of capital determined from relevant market comparisons and adjusted for specific risks. We compared the results of the discounted cash flow model to other recent market information about the value of similar assets, noting the amounts to be consistent. The analysis resulted in an impairment loss of approximately $216.8 million. The following is a summary of the impairment on the net book value of the long-lived assets: Net Book Value Before Impairment Impairment Net Book Value After Impairment (dollars in thousands) Operating Facilities $ 170,324 $ (164,449 ) $ 5,875 Transload Locations 23,264 (21,815 ) 1,449 Real Estate 1,417 (1,367 ) 50 Lease Right-of-Use Assets 32,834 (29,146 ) 3,688 $ 227,839 $ (216,777 ) $ 11,062 In addition to the impairment of the operating facilities and transload facilities, we also assessed other current and long-term assets for impairment. As part of this analysis, we wrote down certain Inventories, Accounts and Notes Receivable, and Prepaid and Other Assets. The Oil and Gas Proppants business has liabilities related to its capitalized operating leases and asset retirement obligation that total $17.9 million at March 31, 2020. The following is a summary of Impairment Losses recognized during fiscal 2020, by line item: (dollars in thousands) Property, Equipment, and Real Estate $ 187,631 Lease Right-of-Use Assets 29,146 Inventories 6,256 Accounts and Notes Receivable 617 Prepaid and Other Assets 617 $ 224,267 Our Oil and Gas Proppants business continues to be subject to commodity price volatility related to the price of oil. As previously disclosed, we are actively pursuing alternatives for our Oil and Gas Proppants business. If this process results in an alternative use or disposition of this business, additional impairment or other losses may be incurred. Other Assets Other Assets are primarily composed of financing costs related to our revolving credit facility, deferred expenses, and deposits. Income Taxes We account for Income Taxes using the asset and liability method. The effect on deferred taxes of a change in tax rates is recognized in earnings in the period that includes the enactment date. We recognize deferred taxes for the differences between financial statement carrying amounts and the tax bases of existing assets and liabilities by applying enacted statutory tax rates for future years. In addition, we recognize future tax benefits to the extent that such benefits are more likely than not to be realized. Stock Repurchases On April 18, years Revenue Recognition We earn Revenue primarily from the sale of products, which include cement, concrete, aggregates, gypsum wallboard, recycled paperboard, and frac sand. The majority of Revenue from the sale of cement, concrete, aggregates, and gypsum wallboard is originated by purchase orders from our customers, who are primarily third-party contractors and suppliers. Revenue from our Recycled Paperboard and Oil and Gas Proppants segments is generated primarily through long-term supply agreements that mature between calendar years 2020 and 2025. We also earn Revenue from transload services and storage; we recognize Revenue from these services when the product is transferred from the rail car to the truck or silo, or from the silo to the railcar or truck. We invoice customers upon shipment, and our collection terms range from 30-65 days. Revenue from the sale of cement, concrete, aggregates, and gypsum wallboard that is not related to long-term supply agreements is recognized upon shipment of the related products to customers, which is when title and ownership are transferred, and the customer is obligated to pay. Revenue from sales under our long-term supply agreements is also recognized upon transfer of control to the customer, which generally occurs at the time the product is shipped from the production facility or transload location. Our long-term supply agreements with customers define, among other commitments, the volume of product that we must provide and the volume that the customer must purchase by the end of the defined periods. Pricing structures under our agreements are generally market-based but are subject to certain contractual adjustments. Historically , the pricing and volume requirements under certain of these contracts have been renegotiated during volatile market conditions. Shortfall amounts, if applicable under these arrangements, are constrained and not recognized as Revenue until agreement is reached with the customer and there is no risk of reversal. The Company offers certain of its customers, including those with long-term supply agreements, rebates and incentives, which we treat as variable consideration. We adjust the amount of revenue recognized for the variable consideration using the most likely amount method based on past history and projected volumes in the rebate and incentive period. Any amounts billed to customers for taxes are excluded from Revenue. The Company has elected to treat freight and delivery charges we pay for the delivery of goods to our customers as a fulfilment activity rather than a separate performance obligation. When we arrange for a third party to deliver products to customers, fees for shipping and handling that are billed to the customer are recorded as Revenue, while costs we incur for shipping and handling are recorded as expenses and included in Cost of Goods Sold. Approximately $168.1 million, $169.6 million, and $158.3 million of freight for the years ended March 31, 2020, 2019 and 2018, respectively, were included in both Revenue and Cost of Goods Sold in our Consolidated Statement of Earnings. Other Non-Operating Income includes lease and rental income, asset sale income, non-inventoried aggregates sales income, and trucking income, as well as other miscellaneous revenue items and costs which have not been allocated to a business segment. See Footnote (I) for disaggregation of Revenue by segment. Comprehensive Income/Losses As of March 31, Consolidated Cash Flows – Supplemental Disclosures Supplemental cash flow information is as follows: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Cash Payments: Interest $ 37,610 $ 28,191 $ 28,869 Income Taxes 20,046 39,974 69,481 Operating Cash Flows used for Operating Leases 14,926 — — Non-Cash Financing Activities: Right-of-use Assets Obtained for Capitalized Operating Lease Liabilities $ 621 $ — $ — Statements of Consolidated Earnings – Supplemental Disclosures Maintenance and repair expenses are included in each segment’s costs and expenses. We incurred $127.0 million, $116.3 million, and $107.3 million of maintenance and repairs expense in the years ended March 31, Selling, General, and Administrative Expenses Selling, General, and Administrative expenses of the operating units are included in Cost of Goods Sold on the Consolidated Statements of Earnings. Corporate General and Administrative (Corporate G&A) expenses include administration, financial, legal, employee benefits, and other corporate activities, and are shown separately in the Consolidated Statements of Earnings. Corporate G&A also includes stock compensation expense. See Footnote (L) for more information. Total Selling, General, and Administrative expenses for each of the periods are summarized as follows: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Operating Units Selling, G&A $ 57,077 $ 53,787 $ 62,529 Corporate G&A 65,410 37,371 41,205 $ 122,487 $ 91,158 $ 103,734 The increase in Corporate General and Administrative Expenses during fiscal 2020 is primarily due to business development costs related to our pending separation, acquisitions, and the acceleration of stock compensation costs upon the retirement of our Chief Executive Officer during the year. Earnings Per Share For the Years Ended March 31, 2020 2019 2018 Weighted-Average Shares of Common Stock Outstanding 42,021,892 46,620,894 48,141,226 Effect of Dilutive Shares: Assumed Exercise of Outstanding Dilutive Options 623,779 539,135 1,013,764 Less Shares Repurchased from Proceeds of Assumed Exercised Options (481,853 ) (374,380 ) (727,904 ) Restricted Stock Units 121,525 146,731 218,900 Weighted-Average Common Stock and Dilutive Securities Outstanding 42,285,343 46,932,380 48,645,986 The line Less Shares Repurchased from Proceeds of Assumed Exercised Options includes unearned compensation related to outstanding stock options. There were 475,082; 461,575; and 98,362 stock options at an average exercise price of $95.46 per share, $90.32 per share, and $98.75 per share, respectively, that were excluded from the computation of diluted earnings per share for the fiscal years ended March 31, Share-Based Compensation All share-based compensation is valued at the grant date and expensed over the requisite service period, which is generally identical to the vesting period of the award. Forfeitures of share-based awards are recognized in the period in which they occur. Fair Value Measures Certain assets and liabilities are required to be recorded or disclosed at fair value. The estimated fair values of those assets and liabilities have been determined using market information and valuation methodologies. Changes in assumptions or estimation methods could affect the fair value estimates; however, we do not believe any such changes would have a material impact on our financial condition, results of operations, or cash flows. There are three levels of inputs that may be used to measure fair value: Level 1 – Quoted prices for identical assets and liabilities in active markets; Level 2 – Quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data; and Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies, and similar techniques that use significant unobservable inputs. Recent Accounting Pronouncements RECENTLY ADOPTED In February 2016, the FASB issued ASU 2016-02, “Leases,” which supersedes existing lease guidance to require lessees to recognize right-of-use assets and liabilities on the balance sheet for the rights and obligations created by long-term leases and to disclose additional quantitative and qualitative information about leasing arrangements. We also elected the package of practical expedients permitted under the transition guidance which, among other things, allowed us to maintain the historic lease classification for leases in effect at the date of adoption, and to not separate lease components from nonlease components for all leases in effect at the date of adoption. Upon adoption, we recorded a right-of-use asset of approximately $66.7 million, and operating lease liabilities of approximately $71.1 million . See Footnote (F) for more information. PENDING ADOPTION In June 2016, the FASB issued an update on the measurement of credit losses on financial instruments, which requires entities to use a forward-looking approach based on expected losses rather than the current model of incurred losses to estimate credit losses on certain types of financial instruments, including Accounts and Notes Receivable. The application of the forward-looking model may result in earlier recognition of allowances for losses than the current method. This guidance became effective on April 1, 2020. We are currently assessing the impact of the new standard, but we do not expect the adoption will have a material effect on our consolidated financial statements and disclosures. In December 2019, the FASB issued ASU 2019-12 which simplifies the accounting for income taxes, eliminates certain exceptions within existing income tax guidance, and clarifies certain aspects of the current guidance to promote consistency among reporting entities. The updated standard is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020, with early adoption permitted. We do not expect the adoption of this standard will have a material impact to our consolidated financial statements.

ACQUISITION

ACQUISITION	12 Months Ended
	Mar. 31, 2020
Business Combinations [Abstract]
ACQUISITION	(B) ACQUISITIONS Kosmos Acquisition On March 6, 2020, we completed the previously announced acquisition (the Kosmos Acquisition) of Kosmos Cement Company (a joint venture between CEMEX S.A.B. de C.V. and Buzzi Unicem S.p.A.) (Kosmos). The assets acquired in the Kosmos Acquisition were (i) a cement plant located in Louisville, Kentucky, (ii) a limestone quarry located in Battletown, Kentucky, (iii) cement distribution terminals located in Indianapolis, Indiana; Cincinnati, Ohio; Pittsburgh, Pennsylvania; Charleston, West Virginia; Ceredo, West Virginia; Mt. Vernon, Indiana; and Lexington, Kentucky, and (iv) certain other properties and assets used by Kosmos in connection with the foregoing (collectively, the Kosmos Business). Purchase Price: Recording of Assets Acquired and Liabilities Assumed: The preparation of the valuation of the assets acquired and liabilities assumed in the Kosmos Acquisition requires the use of significant assumptions and estimates. Critical estimates with respect to the valuation of property, plant, and equipment include, but are not limited to, replacement cost, condition , and estimated remaining useful lives of property and equipment . Critical estimates related to intangible and other assets include future expected cash flows, including projected revenues and expenses, customer attrition, and applicable discount rates. These estimates are based on assumptions that we believe to be reasonable. However, actual results may differ from these estimates. The Company has determined preliminary fair values of the assets acquired and liabilities assumed in the Kosmos Acquisition. These values are subject to change as we perform additional reviews of the property and equipment, inventory, and the asset retirement obligation. The following table summarizes the provisional allocation of the purchase price to assets acquired and liabilities assumed as of the acquisition date: As of March 6, 2020 (dollars in thousands) Inventories $ 28,413 Property, Plant, and Equipment 477,442 Intangible Assets 35,500 Lease Right-of-Use Assets 3,858 Lease Obligations (3,858 ) Long-term Liabilities (4,000 ) Total Net Assets 537,355 Goodwill 131,582 Total Estimated Purchase Price $ 668,937 Goodwill represents the excess purchase price over the fair values of assets acquired and liabilities assumed. The Goodwill was generated by the availability of co-product sales and the opportunity associated with the expansion of our Cement business to the eastern region of the United States. All of the goodwill generated by the transaction will be deductible for income tax purposes. The following table is a summary of the fair value estimates of the identifiable intangible assets (dollars in thousands) and their weighted-average useful lives: Weighted-Average Life Estimated Fair Value Permits 20 1,500 Customer Relationships 15 32,500 Trade Name and Technology 10 1,500 Total Intangible Assets $ 35,500 Actual and pro forma impact of Kosmos Acquisition: For the Fiscal Year Ended March 31, 2020 (dollars in thousands) Revenue $ 7,880 Operating Income (Loss) $ (6,756 ) Operating Loss shown above for fiscal 2020 was affected by approximately $1.8 million related to depreciation and amortization and $1.7 million related to the recording of acquired inventory at fair value. The unaudited pro forma results presented below include the effects of the Kosmos Acquisition as if it had been consummated as of April 1, 2018. The pro forma results include estimates for depreciation from the fair value adjustments to acquired Property and Equipment, amortization for acquired Intangible Assets, the Inventory step-up to fair value, and interest expense associated with debt used to fund the Kosmos Acquisition. To better reflect the combined operating results, material nonrecurring charges directly related to the Kosmos Acquisition of approximately $5.6 million have been excluded from pro forma net income. Additionally, we excluded a tax benefit of approximately $31.7 million that would not have been available to us had the acquisition occurred on April 1, 2018. See Footnote (J) for more information on the tax benefit. For the Fiscal Year Ended March 31, 2020 2019 Unaudited (dollars in thousands) Revenue $ 1,605,123 $ 1,554,337 Net Income $ 50,189 $ 66,377 Earnings per share – basic $ 1.19 $ 1.42 Earnings per share - diluted $ 1.19 $ 1.41 The pro forma results do not include any anticipated synergies or other expected benefits of the Kosmos Acquisition. Accordingly, the unaudited pro forma results are not necessarily indicative of either future results of operations or results that might have been achieved had the Kosmos Acquisition been consummated as of April 1, 2018. ConAgg Acquisition On August 2, 2019, we acquired the assets of a readymix concrete and aggregates business (the ConAgg Acquisition). The purchase price of the ConAgg Acquisition was approximately $30.4 million. The purchase price and expenses incurred in connection with the ConAgg Acquisition were funded through operating cash flows and borrowings under our Revolving Credit Facility. Operations related to the ConAgg Acquisition are included in our segment reporting for the Concrete and Aggregates business from August 2, 2019 through March 31, 2020. The purchase price for the ConAgg Acquisition was allocated as follows: As of August 2, 2019 (dollars in thousands) Accounts Receivable $ 6,302 Inventories 1,921 Property, Plant, and Equipment 22,620 Intangible Assets 1,320 Lease Right-of-Use Assets 3,263 Other Assets 10 Lease Obligations (3,263 ) Accounts Payable and Accrued Expenses (3,388 ) Total Net Assets 28,785 Goodwill 1,639 Total Estimated Purchase Price $ 30,424

SUBSEQUENT EVENT

SUBSEQUENT EVENT	12 Months Ended
	Mar. 31, 2020
Subsequent Events [Abstract]
SUBSEQUENT EVENT	(C) Subsequent event On April 17, 2020, we sold our Western Aggregates LLC (Western) and Mathews Readymix LLC (Mathews) operations to Teichert Inc., a California-based construction company for an aggregate purchase price of $93.5 million, subject to certain post-closing adjustments. Western Aggregates and Mathews Readymix were part of our Concrete and Aggregates operating segment. At March 31, 2020, assets and liabilities included on our balance sheet related to Western and Mathews were approximately $43.7 million and $2.3 million, respectively. Revenue from Western and Mathews for fiscal years 2020, 2019 and 2018 were approximately $32.3 million, $27.8 million and $27.7 million, respectively.

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT	12 Months Ended
	Mar. 31, 2020
Property Plant And Equipment [Abstract]
PROPERTY, PLANT AND EQUIPMENT	(D) Property, Plant, and Equipment Cost by major category and Accumulated Depreciation are summarized as follows: March 31, 2020 2019 (dollars in thousands) Land and Quarries $ 431,242 $ 379,337 Plants 2,483,246 2,006,870 Buildings, Machinery and Equipment 255,758 219,556 Construction in Progress 30,406 85,886 3,200,652 2,691,649 Accumulated Depreciation (1,438,543 ) (1,264,710 ) $ 1,762,109 $ 1,426,939

ACCRUED EXPENSES

ACCRUED EXPENSES	12 Months Ended
	Mar. 31, 2020
Payables And Accruals [Abstract]
ACCRUED EXPENSES	(E) Accrued Expenses Accrued expenses consist of the following: As of March 31, 2020 2019 (dollars in thousands) Payroll and Incentive Compensation $ 25,584 $ 26,225 Benefits 12,521 12,673 Interest 4,080 3,852 Property Taxes 6,676 5,058 Power and Fuel 1,353 1,644 Litigation Settlements and Expenses — 1,900 Legal and Professional 16,096 — Sales and Use Tax 1,085 2,167 Other 5,898 8,430 $ 73,293 $ 61,949

LEASES

LEASES	12 Months Ended
	Mar. 31, 2020
Leases [Abstract]
LEASES	(F) Leases We lease certain real estate, buildings, and equipment, including rail cars. Certain of these leases contain escalations of rent over the term of the lease, as well as options for us to extend the term of the lease at the end of the original term. These extensions range from periods of one year to twenty years. Our lease agreements do not contain material residual value guarantees or material restrictive covenants. In calculating the present value of future minimum lease payments, we use the rate implicit in the lease if it can be determined. Otherwise, we use our incremental borrowing rate in effect at the commencement of the lease to determine the present value of the future minimum lease payments. Additionally, we lease certain equipment under short-term leases with initial terms of less than twelve months. These short-term equipment leases are not recorded on the balance sheet. Lease expense for our operating and short-term leases is as follows: For the Year Ended March 31, 2020 (dollars in thousands) Operating Lease Cost $ 13,315 Short-term Lease Cost 1,470 Total Lease Cost $ 14,785 The Right-of-Use Assets and Lease Liabilities are reflected on our Balance Sheet as follows: For the Year Ended March 31, 2020 (dollars in thousands) Operating Leases: Operating Lease Right-of-Use Assets $ 30,530 Current Operating Lease Liabilities $ 10,207 Noncurrent Operating Lease Liabilities 49,809 Total Operating Lease Liabilities $ 60,016 During the quarter ended December 31, 2019, we recognized a $29.1 million impairment related to Right-of-Use assets used by our Oil and Gas Proppants business. See Footnote (A) for additional information about the impairment loss. Future payments for operating leases are as follows: Amount Fiscal Year (dollars in thousands) 2021 $ 12,036 2022 10,781 2023 10,067 2024 8,222 2025 6,884 Thereafter 24,624 Total Lease Payments $ 72,614 Less: Imputed Interest (12,598 ) Present Value of Lease Liabilities $ 60,016 Weighted Average Remaining Lease Term (in years) 9.2 Weighted Average Discount Rate 3.78 %

INDEBTEDNESS

INDEBTEDNESS	12 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
INDEBTEDNESS	(G) Indebtedness Long-term debt consists of the following: As of March 31, 2020 2019 (dollars in thousands) Revolving Credit Facility $ 560,000 $ 310,000 4.500% Senior Unsecured Notes Due 2026 350,000 350,000 Term Loan 665,000 — Private Placement Senior Unsecured Notes — 36,500 Total Debt 1,575,000 696,500 Less: Current Portion of Long-term Debt — (36,500 ) Less: Debt Origination Costs (7,685 ) (4,908 ) Long-term Debt $ 1,567,315 $ 655,092 The weighted-average interest rate of borrowings under our Revolving Credit Facility during fiscal years The weighted-average interest rate of borrowings under our Term Loan during fiscal 2020 was 2.8%, which was also the interest rate at March 31, 2020. Our maturities of long-term debt during the next five fiscal years and thereafter are as follows: Fiscal Year Amount 2021 $ — 2022 — 2023 1,225,000 2024 — 2025 — Thereafter 350,000 Total $ 1,575,000 Credit Facility REVOLVING Credit Facility We have a revolving credit facility (the Revolving Credit Facility) that terminates on August 2, 2022. During May 2019, we exercised our option to expand the Revolving Credit Facility and increased the borrowing capacity from $500.0 million to $750.0 million, provided, however, that on August 2, 2021, the aggregate borrowing capacity under the Revolving Credit Facility will be reduced to $665.0 million. The Revolving Credit Facility also includes a swingline loan sublimit of $25.0 million. On December 20, 2019, we amended the Revolving Credit Facility, to, among other things, (i) modify the interest rates with respect to outstanding borrowings; (ii) allow for the consummation of the Kosmos Acquisition; (iii) permit the incurrence of additional indebtedness necessary to consummate the Kosmos Acquisition; (iv) modify the financial covenants to increase maximum leverage permitted under the Revolving Credit Facility; and (v) provide for the selection of an alternate benchmark rate to replace the LIBO Rate (as defined in the Revolving Credit Facility). On April 9, 2020 we further amended the Revolving Credit Facility to, among other things, (i) extend the maturity date with respect to certain lender commitments thereunder from August 2, 2021 to August 2, 2022, (ii) modify the financial covenants to increase the maximum leverage that the Company (on a consolidated basis) is required to maintain, (iii) increase the pricing of borrowings based on the then-existing Leverage Ratio (as defined in the Revolving Credit Facility) which is based on the ratio of the Company’s Consolidated Total Indebtedness (as defined in the Revolving Credit Facility) to Consolidated EBITDA (as defined in the Revolving Credit Facility), and (iv) further restrict the Company and its Restricted Subsidiaries (as defined in the Revolving Credit Facility) from making Restricted Payments (as defined in the Revolving Credit Facility) with certain exceptions, including, among others, no Default (as defined in the Revolving Credit Facility) has occurred and is continuing and based on a pro forma basis after giving effect to any such Restricted Payment the Leverage Ratio would not be greater than 2.50 to 1.00. Borrowings under the Revolving Credit Facility are guaranteed by all of the Company’s material subsidiaries. The debt under the Revolving Credit Facility is not rated by ratings agencies. At the Company’s option, principal amounts outstanding under the Revolving Credit Facility bear interest at a variable rate equal to either (i) the Adjusted LIBO Rate (as defined in the Revolving Credit Facility) plus an agreed spread (ranging from 125 to 200 basis points for loans scheduled to mature in 2021 and from 150 to 250 basis points for loans scheduled to mature in 2022), which is established quarterly based on the Company's then Leverage Ratio; or (ii) an Alternate Base Rate (as defined in the Revolving Credit Facility), which is the highest of (a) the Prime Rate (as defined in the Revolving Credit Facility), (b) the NYFRB (as defined in the Revolving Credit Facility) plus ½ of 1%, scheduled to mature in 2022) which is established quarterly based on the Company's then Leverage Ratio. The Revolving Credit Facility contains customary covenants that restrict the Company’s and its Restricted Subsidiaries’ ability to incur additional debt; encumber assets; merge with or transfer or sell assets to other persons; make or enter into certain investments, loans, or guaranties; enter into certain swap agreements; enter into affiliate transactions or restrictive transactions; make restricted payments; prepay subordinated indebtedness; and enter into sale and leaseback arrangements. The Revolving Credit Facility also requires the Company to maintain at the end of each fiscal quarter a Leverage Ratio of 4.50 :1.00 or less and an Interest Coverage Ratio (as defined in the Revolving Credit Facility) equal to or greater than 2.50 to 1.00. We were in compliance with all financial ratios and tests at March 31, 20 20 . We had $ million of borrowings outstanding under the Revolving Credit Facility at March 31, 20 20 . We had $ million of available borrowings under the Revolving Credit Facility, net of the outstanding letters of credit, at March 31, 20 20 , all of which was available for future borrowings based on our current Leverage Ratio . The Revolving Credit Facility has a $40.0 million letter of credit facility. The Company pays each lender a participation fee with respect to such lender’s participations in letters of credit, which fee accrues at the same Applicable Rate (as defined in the Revolving Credit Facility) used to determine the interest rate applicable to Eurodollar Revolving Loans (as defined in the Revolving Credit Facility) plus a one-time letter of credit fee to the issuing bank of such letters of credit in an amount equal to 0.125% of the initial stated amount. At March 31, 2020, we had $6.5 million of outstanding letters of credit. We have also provided an irrevocable stand-by letter of credit for any borrowings made by our Joint Venture under its credit facility. The Joint Venture has not had any borrowings under the credit facility during the last two fiscal years; therefore, we have not issued any letters of credit during fiscal 2020 and 2019. TERM LOAN On December 20, 2019, we entered into a term loan credit agreement (the Term Loan Agreement) establishing a $665.0 million term loan facility which we used to pay a portion of the purchase price for the Kosmos Acquisition and fees and expenses incurred in connection with the Kosmos Acquisition in March 2020. On April 9, 2020, we amended the Term Loan Agreement and extended the maturity date thereof to August 2, 2022, and modified certain other provisions, as noted below, that are similar to those provisions in the Revolving Credit Agreement as set forth above. Borrowings under the Term Loan Agreement bear interest, at our option, at a variable rate equal to either (i) the Alternate Base Rate (as defined in the Term Loan Agreement and consistent with the Revolving Credit Facility), plus an agreed spread (ranging from 50 to 150 basis points), or (ii) the Adjusted LIBO Rate (as defined in the Term Loan Agreement) plus an agreed spread (ranging from 150 to 250 basis points), which is established quarterly based on the Company's then Leverage Ratio (as defined in the Term Loan Agreement and consistent with the Revolving Credit Facility). The Company must also maintain a Leverage Ratio and Interest Coverage Ratio consistent with the Revolving Credit Facility. 4.500% Senior Unsecured Notes Due 2026 On August 2, Percentage 2021 102.25 % 2022 101.50 % 2023 100.75 % 2024 and thereafter 100.00 % The Senior Unsecured Notes contain covenants that limit our ability and/or our guarantor subsidiaries' ability to create or permit existence of certain liens; enter into sale and leaseback transactions; and consolidate, merge, or transfer all or substantially all of our assets. The Company’s Senior Unsecured Notes are fully, unconditionally, jointly, and severally guaranteed by each of our subsidiaries that are guarantors under the Revolving Credit Facility and Term Loan. See Footnote (O) of the Notes to Consolidated Financial Statements for more information on the guarantors of the Senior Unsecured Notes. Private Placement Senior Unsecured Notes On October 2, Other Information We lease one of our cement plants from the city of Sugar Creek, Missouri. The city of Sugar Creek issued industrial revenue bonds to partly finance improvements to the cement plant. The lease payments due to the city of Sugar Creek under the cement plant lease, which was entered into upon the sale of the industrial revenue bonds, are equal in amount to the payments required to be made by the city of Sugar Creek to the holders of the industrial revenue bonds. Because we hold all outstanding industrial revenue bonds, no debt is reflected on our financial statements in connection with our lease of the cement plant. Upon expiration of the lease in fiscal

FAIR VALUE OF FINANCIAL INSTRUM

FAIR VALUE OF FINANCIAL INSTRUMENTS	12 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
FAIR VALUE OF FINANCIAL INSTRUMENTS	( H ) Fair Value of Financial Instruments The fair value of our senior notes has been estimated based upon our current incremental borrowing rates for similar types of borrowing arrangements. The fair value of our Senior Unsecured Notes at March 31, Fair Value (dollars in thousands) 4.500% Senior Unsecured Notes Due 2026 $ 320,560 The estimated fair value of our long-term debt was based on quoted prices of similar debt instruments with similar terms that are publicly traded (level 2 input). The carrying values of cash and cash equivalents, accounts and notes receivable, accounts payable, and accrued liabilities approximate their fair values at March 31,

BUSINESS SEGMENTS

BUSINESS SEGMENTS	12 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
BUSINESS SEGMENTS	(I) Business Segments Operating segments are defined as components of an enterprise that engage in business activities that earn revenue, incur expenses, and prepare separate financial information that is evaluated regularly by our chief operating decision maker in order to allocate resources and assess performance. We are a leading supplier of heavy construction materials and light building materials in the United States. Our primary products are commodities that are essential in commercial and residential construction; public construction projects; and projects to build, expand, and repair roads and highways. Demand for our products is generally cyclical and seasonal, depending on economic and geographic conditions. We distribute our products across many United States markets, which provides us with regional economic diversification. We also produce sand used in hydraulic fracturing as part of our Oil and Gas Proppants segment. Our business is organized into three sectors within which there are five reportable business segments. The Heavy Materials sector includes the Cement and Concrete and Aggregates segments. The Light Materials sector includes the Gypsum Wallboard and Recycled Paperboard segments. The Oil and Gas Proppants segment produces frac sand used in oil and gas extraction. Our operations are conducted in the U.S. and include the mining of limestone for the manufacture, production, distribution, and sale of portland cement (a basic construction material which is the essential binding ingredient in concrete); the grinding and sale of slag; the mining of gypsum for the manufacture and sale of gypsum wallboard; the manufacture and sale of recycled paperboard to the gypsum wallboard industry and other paperboard converters; the sale of readymix concrete; and the mining and sale of aggregates (crushed stone, sand, and gravel) and sand used in hydraulic fracturing (frac sand). We operate eight modern cement plants (one of which is operated through a joint venture located in Buda, Texas), one slag grinding facility, and 29 cement distribution terminals. Our cement companies focus on the U.S. heartland and operate as an integrated network selling product primarily in California, Colorado, Illinois, Indiana, Iowa, Kentucky, Missouri, Nebraska, Nevada, Ohio, Oklahoma, and Texas. We operate 26 readymix concrete batch plants and five aggregates processing plants in markets that are complementary to our cement network. On April 17, 2017 we sold our Concrete and Aggregates companies in northern California. See Footnote (C) for more information about the sale. We operate five gypsum wallboard plants and a recycled paperboard mill . We distribute gypsum wallboard and recycled paperboard throughout the continental U.S., with the exception of the Northeast. Our Oil and Gas Proppants business owns two frac sand processing facilities, four frac sand drying facilities, and two frac sand trans-load locations. Frac sand is currently sold into shale deposits across the United States. We account for intersegment sales at market prices. For segment reporting purposes only, we proportionately consolidate our 50% share of the Joint Venture Revenue and Operating Earnings, consistent with the way management reports the segments within the Company for making operating decisions and assessing performance. The following tables below sets forth certain financial information relating to our operations by segment. We do not allocate interest or taxes at the segment level, only at the consolidated company level. For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Revenue - Cement $ 752,002 $ 656,759 $ 651,750 Concrete and Aggregates 182,775 140,173 157,013 Gypsum Wallboard 508,145 532,712 491,779 Paperboard 159,963 167,656 181,742 Oil and Gas Proppants 46,781 82,987 98,244 1,649,666 1,580,287 1,580,528 Less: Intersegment Revenue (85,316 ) (82,553 ) (88,124 ) Less: Joint Venture Revenue (113,536 ) (104,493 ) (105,884 ) $ 1,450,814 $ 1,393,241 $ 1,386,520 For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Intersegment Revenue - Cement $ 21,499 $ 14,408 $ 16,442 Concrete and Aggregates 1,502 1,422 1,335 Paperboard 62,315 66,723 70,347 $ 85,316 $ 82,553 $ 88,124 Cement Sales Volume (M tons) - Wholly Owned 4,975 4,441 4,453 Joint Venture 956 899 912 5,931 5,340 5,365 For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Operating Earnings - Cement $ 181,330 $ 164,782 $ 179,151 Concrete and Aggregates 17,558 12,866 17,854 Gypsum Wallboard 154,614 180,831 158,551 Paperboard 34,979 35,349 32,758 Oil and Gas Proppants (14,634 ) (28,695 ) (6,139 ) Sub-Total 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 (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 $ 45,724 $ 79,735 $ 271,962 Cement Operating Earnings - Wholly Owned $ 138,745 $ 126,217 $ 135,732 Joint Ventures 42,585 38,565 43,419 $ 181,330 $ 164,782 $ 179,151 Capital Expenditures - Cement $ 44,776 $ 76,504 $ 45,088 Concrete and Aggregates 11,898 6,649 4,977 Gypsum Wallboard 12,771 10,724 19,382 Paperboard 62,528 16,603 5,177 Oil and Gas Proppants 146 52,286 56,872 Other, net — 6,107 461 $ 132,119 $ 168,873 $ 131,957 Depreciation, Depletion, and Amortization - Cement $ 59,081 $ 52,802 $ 50,891 Concrete and Aggregates 11,142 8,176 7,931 Gypsum Wallboard 20,320 20,020 18,179 Paperboard 8,945 8,541 8,694 Oil and Gas Proppants 11,310 31,328 26,872 Corporate and Other 2,720 1,668 1,448 $ 113,518 $ 122,535 $ 114,015 As of March 31, 2020 2019 2018 (dollars in thousands) Identifiable Assets Cement $ 1,980,306 $ 1,289,468 $ 1,247,504 Concrete and Aggregates 136,041 95,084 104,851 Gypsum Wallboard 375,946 372,206 386,041 Paperboard 183,288 138,614 123,819 Oil and Gas Proppants 14,294 236,357 444,826 Other, net 271,145 37,434 60,962 $ 2,961,020 $ 2,169,163 $ 2,368,003 Segment Operating Earnings, including the proportionately consolidated 50% interest in the revenue and expenses of the Joint Venture, represent Revenue less direct operating expenses, segment Depreciation, and segment Selling, General, and Administrative expenses. Segment Operating Earnings don’t include certain non-recurring losses, such as impairment and legal settlements. We account for intersegment sales at market prices. Corporate assets consist primarily of cash and cash equivalents, general office assets, and miscellaneous other assets. The basis used to disclose Identifiable Assets; Capital Expenditures; and Depreciation, Depletion, and Amortization conforms with the equity method, and is similar to how we disclose these accounts in our Consolidated Balance Sheets and Consolidated Statements of Earnings. The segment breakdown of Goodwill at March 31, For the Years Ended March 31, 2020 2019 (dollars in thousands) Cement $ 205,797 $ 74,214 Concrete and Aggregates 1,639 — Gypsum Wallboard 116,618 116,618 Paperboard 7,538 7,538 $ 331,592 $ 198,370

INCOME TAXES

INCOME TAXES	12 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
INCOME TAXES	(J) Income Taxes The provision for income taxes includes the following components: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Current Provision (Benefit) - Federal $ (102,080 ) $ 32,710 $ 58,695 State 923 6,536 5,989 (101,157 ) 39,246 64,684 Deferred Provision (Benefit) - Federal 76,255 (21,039 ) (52,333 ) State (268 ) (7,332 ) 2,979 75,987 (28,371 ) (49,354 ) Provision (Benefit) for Income Taxes $ (25,170 ) $ 10,875 $ 15,330 The effective tax rates vary from the federal statutory rates due to the following items: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Earnings Before Income Taxes $ 45,724 $ 79,735 $ 271,962 Income Taxes at Statutory Rate $ 9,602 $ 16,744 $ 85,804 Increases (Decreases) in Tax Resulting from - State Income Taxes, net (1,703 ) (629 ) 6,139 Statutory Depletion in Excess of Cost (3,078 ) (3,834 ) (6,341 ) Domestic Production Activities Deduction — — (5,995 ) Excess Tax Benefit from Stock Compensation 307 (651 ) (4,129 ) Meals and Entertainment Disallowance 537 610 567 Limitation on Officer's Compensation 1,018 1,434 246 Impact of Tax Cuts and Jobs Act of 2017 — — (61,692 ) Impact of CARES Act of 2020 (35,936 ) — — Credits (2,150 ) (940 ) — Valuation Allowance 2,212 (2,100 ) — Unrecognized Tax Benefits 4,200 — — Other (179 ) 241 731 Provision for Income Taxes $ (25,170 ) $ 10,875 $ 15,330 Effective Tax Rate (55 )% 14 % 6 % Components of deferred income taxes are as follows: March 31, 2020 2019 (dollars in thousands) Items Giving Rise to Deferred Tax Liabilities - Excess Tax Depreciation and Amortization $ (199,096 ) $ (108,505 ) State Income Taxes, net (12,225 ) (9,236 ) Right-of-Use Asset (5,441 ) — Other (5,764 ) (5,628 ) Total Deferred Tax Liabilities $ (222,526 ) $ (123,369 ) Items Giving Rise to Deferred Tax Assets - Change in Accruals $ 9,373 $ 8,601 Depletable Assets 12,632 8,995 Inventory 7,217 6,046 Bad Debts 2,642 2,169 Long-term Incentive Compensation Plan 5,590 5,154 Credits and Other Carryforwards 19,861 12,289 Lease Liability 11,384 — Pension 937 921 Subtotal 69,636 44,175 Valuation Allowance (13,777 ) (11,565 ) Total Deferred Tax Assets $ 55,859 $ 32,610 We record Deferred Tax Assets and Liabilities based upon estimates of their realizable value with such estimates based upon likely future tax consequences. In assessing the need for a valuation allowance, we consider both positive and negative evidence related to the likelihood of realization of the Deferred Tax Assets. If, based on the weight of available evidence, it is more likely than not that a Deferred Tax Asset will not be realized, we record a Valuation Allowance. During fiscal 2020 , we recorded an increase in the V aluation A llowance against our Deferred Tax Assets of $ million. Th e in crease is because of changes in estimates of the realizability of certain deferred tax assets related to certain state income tax credits . We have federal and state net operating loss carryforwards of $5.4 million at March 31, 2020, and approximately $1.0 million at March 31, 2019. We have federal Research and Development (R&D) and state income tax credits of $2.2 million at March 31, 2020 and $2.0 million at March 31, 2019, net of Valuation Allowances. The federal R&D credits can be carried forward 20 years and the state income tax credits may be carried forward indefinitely. We file income tax returns in U.S. federal and various state jurisdictions. The Company is currently subject to U.S. federal income tax examinations for the year ended March 31, 2017 and forward. Uncertain tax positions We are subject to audit examinations at federal, state, and local levels by tax authorities in those jurisdictions who may challenge the treatment or reporting of any return item. The tax matters challenged by the tax authorities are typically complex; therefore, the ultimate outcome of these challenges is subject to uncertainty. We review and assess all tax positions subject to uncertainty on a more-likely-than-not standard with respect to ultimate outcome if challenged. We measure and record tax benefit or expense only when the more-likely-than-not threshold is met. The change in unrecognized tax benefits for the years ended March 31, 2020, 2019, and 2018 was as follows: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Balance at Beginning of Year $ — $ — $ — Increase related to current tax positions 4,200 — — Decrease related to current tax positions — — — Payments — — — $ 4,200 $ — $ — We recorded a $4.2 million reserve as a result of a position we will take on our fiscal 2020 federal tax return related to the interest limitation under IRC Section 163(j) and the resulting carryback allowed under the CARES Act. This tax return position reflects an expected update to U.S. Department of the Treasury regulations. We recorded a reserve for financial reporting purposes to reflect the U.S. Department of the Treasury's current proposed regulations under Section 163(j) which have not yet been withdrawn. We will reevaluate this reserve when new guidance is issued, which is currently expected in calendar 2020. We classify interest and penalties related to uncertain tax positions as current income tax expense. We recorded no interest and penalties for each of the fiscal years ended March 31, 2020, 2019, and 2018, respectively. Tax Cuts and Jobs Act The Tax Cuts and Jobs Act (the Act) was enacted on December 22, 2017. The Act, among other changes, reduces the U.S. federal corporate tax rate from 35% to 21%, allows for the immediate 100% deductibility of certain capital expenditures, repeals the domestic production deduction, and further limits the deductibility of certain executive compensation. In December 2017, we recorded a tax benefit of $61.7 million related to the change in corporate tax rates that reduced our deferred tax liabilities after the initial assessment of the tax effects of the Act. In the quarter ended December 31, 2018, we finalized our accounting for the Act with no material changes from our provisional calculations. CARES Act The CARES Act was enacted on March 27, 2020. The CARES Act, among other changes, allows for a five-year

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Mar. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	(K) Commitments and Contingencies Our operations and properties are subject to extensive and changing federal, state, and local laws; regulations and ordinances governing the protection of the environment; as well as laws relating to worker health and workplace safety. We carefully consider the requirements mandated by such laws and regulations and have procedures in place at all of our operating units to monitor compliance. Any matters which are identified as potential exposures under these laws and regulations are carefully reviewed by management to determine our potential liability. Although management is not aware of any exposures which require an accrual under generally accepted accounting principles, there can be no assurance that prior or future operations will not ultimately result in violations, claims, or other liabilities associated with these regulations. We have certain deductible limits under our workers’ compensation and liability insurance policies for which reserves are established based on the undiscounted estimated costs of known and anticipated claims. We have entered into standby letter of credit agreements relating to workers’ compensation and auto and general liability self-insurance. At March 31, We are currently contingently liable for performance under $31.0 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. Other In the ordinary course of business, we execute contracts involving indemnifications that are standard in the industry and indemnifications specific to a transaction such as the sale of a business. These indemnifications might include claims relating to any of the following: environmental and tax matters; intellectual property rights; governmental regulations and employment-related matters; customer, supplier, construction contractor, and other commercial contractual relationships; and financial matters. While the maximum amount to which we may be exposed under such agreements cannot be estimated, it is the opinion of management that these indemnifications are not expected to have a material adverse effect on the Company’s consolidated financial position, results of operations, or cash flows. We currently have no outstanding guarantees of third-party debt. We have certain forward purchase contracts, primarily for natural gas, that expire during calendar

STOCK OPTION PLANS

STOCK OPTION PLANS	12 Months Ended
	Mar. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
STOCK OPTION PLANS	(L) Stock Option Plans On August 7, Long-Term Compensation Plans Options In May four-year All stock options issued during fiscal 20 20 and 201 9 were valued at the grant date using the Black-Scholes option pricing model. The weighted-average assumptions used in the Black-Scholes model to value the option awards in fiscal 20 20 and 201 9 are as follows: 2020 2019 Dividend Yield 1.3 % 1.3 % Expected Volatility 31.4 % 32.7 % Risk Free Interest Rate 2.31 % 2.85 % Expected Life 6.0 years 6.0 years Stock option expense for all outstanding stock option awards was approximately $4.5 million, $3.8 million, and $4.3 million for the years ended March 31, The following table shows stock option activity for the years presented: For the Years Ended March 31, 2020 2019 2018 Number of Shares Weighted- Average Exercise Price Number of Shares Weighted- Average Exercise Price Number of Shares Weighted- Average Exercise Price Outstanding Options at Beginning of Year 1,042,925 $ 76.88 958,136 $ 72.52 1,323,379 $ 66.07 Granted 187,375 $ 91.58 125,734 $ 103.53 119,986 $ 100.20 Exercised (62,326 ) $ 88.28 (38,748 ) $ 54.27 (448,295 ) $ 60.27 Cancelled (7,883 ) $ 102.69 (2,197 ) $ 100.88 (36,934 ) $ 79.97 Outstanding Options at End of Year 1,160,091 $ 80.36 1,042,925 $ 76.88 958,136 $ 72.52 Options Exercisable at End of Year 868,081 761,564 651,218 Weighted-Average Fair Value of Options Granted during the Year $ 27.35 $ 33.11 $ 33.37 The following table summarizes information about stock options outstanding at March 31, Options Outstanding Options Exercisable Range of Exercise Prices Number of Shares Outstanding Weighted Average Remaining Contractual Life Weighted- Average Exercise Price Number of Shares Outstanding Weighted- Average Exercise Price $23.17 - $29.84 65,912 1.35 $ 23.27 65,912 $ 23.27 $33.43 - $37.34 57,728 2.21 $ 34.03 57,728 $ 34.03 $53.22 - $77.67 267,763 5.28 $ 72.46 233,949 $ 72.37 $79.73 - $106.24 768,688 6.72 $ 91.49 510,492 $ 89.24 1,160,091 5.86 $ 80.36 868,081 $ 76.01 At March 31, Restricted Stock In May four-year In August six-month The fair value of restricted stock is estimated based on the stock price at the date of the grant. The following table summarizes the activity for nonvested restricted shares during the fiscal years ended March 31, 2020, 2019, and 2018: For the Years Ended March 31, 2020 2019 2018 Number of Shares Weighted Average Grant Date Fair Value Number of Shares Weighted Average Grant Date Fair Value Number of Shares Weighted Average Grant Date Fair Value Nonvested Restricted Stock at Beginning of Year 300,115 $ 78.94 328,059 $ 72.52 371,213 $ 66.07 Granted 118,292 $ 90.08 121,836 $ 105.73 107,964 $ 100.20 Vested (169,347 ) $ 92.98 (147,790 ) $ 75.94 (119,187 ) $ 60.27 Forfeited (15,940 ) $ 58.64 (1,990 ) $ 100.88 (31,931 ) $ 79.97 Nonvested Restricted Stock at End of Year 233,120 $ 75.35 300,115 $ 78.94 328,059 $ 72.52 Expense related to restricted shares was $15.3 million, $11.3 million, and $9.6 million in fiscal years ended March 31, The number of shares available for future grants of stock options, restricted stock units, stock appreciation rights, and restricted stock under the Plan was 3,755,871 at March 31,

NET INTEREST EXPENSE

NET INTEREST EXPENSE	12 Months Ended
	Mar. 31, 2020
Banking And Thrift Interest [Abstract]
NET INTEREST EXPENSE	(M) Net Interest Expense The following components are included within Interest Expense, net: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Interest Income $ (34 ) $ (123 ) $ (14 ) Interest Expense 36,956 27,329 26,433 Other Expenses 1,499 1,168 1,219 Interest Expense, net $ 38,421 $ 28,374 $ 27,638 Interest Income includes interest earned on investments of excess cash. Components of Interest Expense include interest associated with the Revolving Credit Facility, Term Loan, Senior Unsecured Notes, Private Placement Senior Unsecured Notes, and commitment fees based on the unused portion of the Revolving Credit Facility. Other Expenses include amortization of debt issuance costs and Revolving Credit Facility costs.

PENSION AND PROFIT SHARING PLAN

PENSION AND PROFIT SHARING PLANS	12 Months Ended
	Mar. 31, 2020
Compensation And Retirement Disclosure [Abstract]
PENSION AND PROFIT SHARING PLANS	(N) Pension and Profit Sharing Plans We offer our employees multiple retirement and profit sharing plans. Pension Plans We have several defined benefit and defined contribution retirement plans which together cover substantially all of our employees. Benefits paid under the defined benefit plans covering certain hourly employees are based on years of service and each employee’s qualifying compensation over the last few years of employment. Our funding policy is to generally contribute amounts that are deductible for income tax purposes. The annual measurement date is March 31 for the benefit obligations, fair value of plan assets, and the funded status of the defined benefit plans. The following table provides a reconciliation of the Obligations and Fair Values of Plan Assets for all defined benefit plans over the two-year period ended March 31, For the Years Ended March 31, 2020 2019 (dollars in thousands) Reconciliation of Benefit Obligations - Benefit Obligation at April 1, $ 33,730 $ 33,370 Service Cost - Benefits Earned During the Period 339 399 Interest Cost on Projected Benefit Obligation 1,351 1,347 Actuarial (Gain) Loss 2,464 (306 ) Benefits Paid (1,183 ) (1,080 ) Benefit Obligation at March 31, $ 36,701 $ 33,730 Reconciliation of Fair Value of Plan Assets - Fair Value of Plan Assets at April 1, $ 36,541 $ 33,412 Actual Return on Plan Assets 3,651 2,169 Employer Contributions — 2,040 Benefits Paid (1,183 ) (1,080 ) Fair Value of Plan Assets at March 31, 39,009 36,541 Funded Status - Funded Status at March 31, $ 2,308 $ 2,811 Amounts Recognized in the Balance Sheet Consist of - Other Assets $ 2,308 $ 2,811 Accumulated Other Comprehensive Losses: Net Actuarial Loss 4,709 4,346 Prior Service Cost — 19 Accumulated Other Comprehensive Losses $ 4,709 $ 4,365 Reclassification to Retained Earnings — — Tax impact (1,149 ) (1,049 ) Accumulated Other Comprehensive Losses, net of tax $ 3,560 $ 3,316 The table below summarizes the Company’s Projected Benefit Obligation, Accumulated Benefit Obligation and Fair Value of Plan Assets at March 31, 2020 and 2019: March 31, 2020 2019 (dollars in thousands) Projected Benefit Obligation $ 36,701 $ 33,730 Accumulated Benefit Obligation $ 36,701 $ 33,727 Fair Value of Plan Assets $ 39,009 $ 36,541 Net periodic pension cost for the fiscal years ended March 31, For the Years Ended March 31, 2020 2019 2018 (dollar in thousands) Service Cost - Benefits Earned During the Period $ 339 $ 399 $ 710 Interest Cost of Projected Benefit Obligation 1,351 1,347 1,466 Expected Return on Plan Assets (1,702 ) (1,853 ) (2,137 ) Recognized Net Actuarial Loss 153 230 566 Amortization of Prior-Service Cost 19 61 269 Settlement — — 649 Net Periodic Pension Cost $ 160 $ 184 $ 1,523 During the fourth quarter of fiscal 2018, we offered to pay our deferred vested participants that no longer worked for the Company but were not yet retired. We paid approximately $3.9 million to these participants in March 2018. In connection with this payment, we recognized a settlement cost of approximately $0.6 million. Expected benefit payments over the next five years, and the following five years under the pension plans are expected to be as follows (dollars in thousands): Fiscal Years Total 2021 $ 1,586 2022 $ 1,673 2023 $ 1,721 2024 $ 1,765 2025 $ 1,892 2026-2030 $ 10,197 The following tables set forth the assumptions used in the actuarial calculations of the present value of Net Periodic Benefit Costs and Benefit Obligations: March 31, 2020 2019 2018 Net Periodic Benefit Costs - Discount Rate 4.09 % 4.12 % 4.03 % Expected Return on Plan Assets 4.75 % 5.50 % 7.50 % Rate of Compensation Increase 3.50 % 3.50 % 3.50 % March 31, 2020 2019 Benefit Obligations - Discount Rate 3.64 % 4.09 % Rate of Compensation Increase 3.50 % 3.50 % The expected long-term rate of return on plan assets is an assumption reflecting the anticipated weighted-average rate of earnings on the portfolio over the long term. To determine this rate, we developed estimates of the key components underlying capital asset returns which include: market-based estimates of inflation, real risk-free rates of return, yield curve structure, credit risk premiums, and equity risk premiums. We used these components as appropriate to develop benchmark estimates of the expected long-term management approach that we employ. The pension plans’ approximate weighted-average asset allocation at March 31, Percentage of Plan Assets at March 31, Range of Target Allocation 2020 2019 Asset Category - Equity Securities 10 – 20% 9 % 14 % Debt Securities 60 – 90% 89 % 85 % Other 0 – 20% 2 % 1 % Total 100 % 100 % Our pension investment strategies have been developed as part of a comprehensive management process that considers the interaction between the assets and liabilities within each plan. These strategies consider not only the expected risk and returns on plan assets, but also the detailed actuarial projections of liabilities as well as plan-level objectives such as projected contributions, expense, and funded status. The principal pension investment strategies include asset allocation and active asset management. The range of target asset allocations has been determined given the current funded status of the plan. Each asset class is actively managed by one or more external money managers with the objective of generating returns, net of management fees, that exceed market-based benchmarks. None of the plans hold any EXP stock. Based on our current actuarial estimates, we anticipate making contributions ranging from approximately $0.5 million to $1.0 million to our defined benefit plans for fiscal year The fair values of our defined benefit plans’ consolidated assets by category as of March 31, March 31, 2020 2019 (dollars in thousands) Equity Securities $ 3,470 $ 4,525 Fixed Income Securities 34,579 31,516 Real Estate Funds 107 144 Commodity Linked Funds — 212 Cash Equivalents 853 144 Total $ 39,009 $ 36,541 The fair values of our defined benefit plans’ consolidated assets were determined using the fair value hierarchy of inputs described in Footnote (A) to the Consolidated Financial Statements. The fair values by category of inputs as of March 31, Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Asset Categories (dollars in thousands) Equity Securities $ — $ 3,470 $ — $ 3,470 Fixed Income Securities — 34,579 — 34,579 Real Estate Funds — 107 — 107 Cash Equivalents 853 — — 853 $ 853 $ 38,156 $ — $ 39,009 The fair values by category of inputs as of March 31, 2019 were as follows: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Asset Categories (dollars in thousands) Equity Securities $ — $ 4,525 $ — $ 4,525 Fixed Income Securities — 31,516 — 31,516 Real Estate Funds — 144 — 144 Commodity Linked Funds — 212 — 212 Cash Equivalents 144 — — 144 $ 144 $ 36,397 $ — $ 36,541 Equity securities consist of funds that are not actively traded. These funds are maintained by an investment manager and are primarily invested in indexes. The remaining funds, excluding cash, primarily consist of investments in institutional funds. Profit Sharing Plans We also provide profit sharing plans, which cover substantially all salaried and certain hourly employees. The profit sharing plans are defined contribution plans funded by employer discretionary contributions; employees may also contribute a certain percentage of their base annual salary. Employees are fully vested in their own contributions and become fully vested in any Company contributions over a four-year Individuals who became our employees as a result of a previous transaction are provided benefits substantially comparable to those provided under the seller’s benefit plans. These plans include the seller’s 401(k) plan which allows for employer matching percentages of hourly employees. As a result, we made matching contributions to the hourly profit sharing plan totaling $0.7 million, $0.6 million, and $0.6 million for these employees during fiscal years Approximately fifty of our employees belong to three different multi-employer plans. The collective bargaining agreements for the employees who participate in the multi-employer plans expire in February March 2025

FINANCIAL STATEMENTS FOR GUARAN

FINANCIAL STATEMENTS FOR GUARANTORS OF THE 4.500% SENIOR UNSECURED NOTES	12 Months Ended
	Mar. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
FINANCIAL STATEMENTS FOR GUARANTORS OF THE 4.500% SENIOR UNSECURED NOTES	(O) FINANCIAL STATEMENTS FOR GUARANTORS OF THE 4.500% SENIOR UNSECURED NOTES On August 2, The Senior Unsecured Notes are guaranteed by all of the Company’s wholly-owned subsidiaries, and all guarantees are full and unconditional, and are joint and several. The following unaudited Condensed Consolidating Financial Statements present separately the Earnings and Comprehensive Earnings, Balance Sheet, and Cash Flows of the parent issuer (Eagle Materials Inc.), and the guarantors (all wholly-owned subsidiaries of Eagle Materials Inc.) on a combined basis with eliminating entries (dollars in thousands). Condensed Consolidating Statement of Earnings and Comprehensive Earnings For the Year Ended March 31, 2020 Parent Guarantor Subsidiaries Eliminations Consolidated Revenue $ — $ 1,450,814 $ — $ 1,450,814 Cost of Goods Sold — 1,119,552 — 1,119,552 Gross Profit — 331,262 — 331,262 Equity in Earnings of Unconsolidated Joint Venture 42,585 42,585 (42,585 ) 42,585 Equity in Earnings of Subsidiaries 100,225 — (100,225 ) — Corporate General and Administrative Expenses (56,695 ) (8,715 ) — (65,410 ) Impairment Losses — (224,267 ) — (224,267 ) Other Non-Operating Income (Loss) (697 ) 672 — (25 ) Interest Expense, net (38,372 ) (49 ) — (38,421 ) Earnings before Income Taxes 47,046 141,488 (142,810 ) 45,724 Income Taxes 23,848 1,322 — 25,170 Net Earnings $ 70,894 $ 142,810 $ (142,810 ) $ 70,894 Net Earnings $ 70,894 $ 142,810 $ (142,810 ) $ 70,894 Net Actuarial Change in Benefit Plans, net of tax (265 ) (265 ) 265 (265 ) Comprehensive Earnings $ 70,629 $ 142,545 $ (142,545 ) $ 70,629 Condensed Consolidating Statement of Earnings and Comprehensive Earnings For the Year Ended March 31, 2019 Parent Guarantor Subsidiaries Eliminations Consolidated Revenue $ — $ 1,393,241 $ — $ 1,393,241 Cost of Goods Sold — 1,066,673 — 1,066,673 Gross Profit — 326,568 — 326,568 Equity in Earnings of Unconsolidated Joint Venture 38,565 38,565 (38,565 ) 38,565 Equity in Earnings of Subsidiaries 77,954 — (77,954 ) — Corporate General and Administrative Expenses (31,744 ) (5,627 ) — (37,371 ) Impairment Losses — (220,265 ) — (220,265 ) Legal Settlements — (1,800 ) — (1,800 ) Other Non-Operating Income (390 ) 2,802 — 2,412 Interest Expense, net (28,325 ) (49 ) — (28,374 ) Earnings before Income Taxes 56,060 140,194 (116,519 ) 79,735 Income Taxes 12,800 (23,675 ) — (10,875 ) Net Earnings $ 68,860 $ 116,519 $ (116,519 ) $ 68,860 Net Earnings $ 68,860 $ 116,519 $ (116,519 ) $ 68,860 Net Actuarial Change in Benefit Plans, net of tax 696 696 (696 ) 696 Comprehensive Earnings $ 69,556 $ 117,215 $ (117,215 ) $ 69,556 Condensed Consolidating Statement of Earnings and Comprehensive Earnings For the Year Ended March 31, 2018 Parent Guarantor Subsidiaries Eliminations Consolidated Revenue — $ 1,386,520 $ — $ 1,386,520 Cost of Goods Sold — 1,047,764 — 1,047,764 Gross Profit — 338,756 — 338,756 Equity in Earnings of Unconsolidated Joint Venture 43,419 43,419 (43,419 ) 43,419 Equity in Earnings of Subsidiaries 289,950 — (289,950 ) — Corporate General and Administrative Expenses (37,825 ) (3,380 ) — (41,205 ) Legal Settlements (45,098 ) — — (45,098 ) Other Non-Operating Income (233 ) 3,961 — 3,728 Interest Expense, net (27,609 ) (29 ) — (27,638 ) Earnings before Income Taxes 222,604 382,727 (333,369 ) 271,962 Income Taxes 34,028 (49,358 ) — (15,330 ) Net Earnings $ 256,632 $ 333,369 $ (333,369 ) $ 256,632 Net Earnings $ 256,632 $ 333,369 $ (333,369 ) 256,632 Net Actuarial Change in Benefit Plans, net of tax 3,384 3,384 (3,384 ) 3,384 Comprehensive Earnings $ 260,016 $ 336,753 $ (336,753 ) $ 260,016 Condensed Consolidating Balance Sheet At March 31, 2020 Parent Guarantor Subsidiaries Eliminations Consolidated ASSETS Current Assets - Cash and Cash Equivalents $ 116,269 $ 2,379 $ — 118,648 Accounts and Notes Receivable 531 151,255 — 151,786 Inventories — 272,508 — 272,508 Income Tax Receivable 128,413 — — 128,413 Prepaid and Other Current Assets 953 5,909 — 6,862 Total Current Assets 246,166 432,051 — 678,217 Property, Plant and Equipment, net 6,606 1,755,503 — 1,762,109 Notes Receivable — 9,139 — 9,139 Investment in Joint Venture 70 73,888 — 73,958 Operating Lease Right-of-Use Assets 9,765 20,765 — 30,530 Investments in Subsidiaries and Receivables from Affiliates 2,489,326 179,398 (2,668,724 ) — Deferred Tax Assets 11,409 — (11,409 ) — Goodwill and Intangible Assets, net — 396,463 — 396,463 Other Assets 4,417 6,187 — 10,604 $ 2,767,759 $ 2,873,394 $ (2,680,133 ) $ 2,961,020 LIABILITIES AND STOCKHOLDERS’ EQUITY Current Liabilities- Accounts Payable $ 6,365 $ 79,832 $ — $ 86,197 Accrued Liabilities 33,409 39,884 — 73,293 Operating Lease Liabilities 1,180 9,027 — 10,207 Total Current Liabilities 40,954 128,743 — 169,697 Long-term Debt 1,567,315 — — 1,567,315 Noncurrent Operating Lease Liabilities 12,249 37,560 — 49,809 Other Long-term Liabilities — 39,689 — 39,689 Payables to Affiliates 179,398 6,324,504 (6,503,902 ) — Deferred Income Taxes — 178,076 (11,409 ) 166,667 Total Liabilities 1,799,916 6,708,572 (6,515,311 ) 1,993,177 Total Stockholders’ Equity 967,843 (3,835,178 ) 3,835,178 967,843 $ 2,767,759 $ 2,873,394 $ (2,680,133 ) $ 2,961,020 Condensed Consolidating Balance Sheet At March 31, 2019 Parent Guarantor Subsidiaries Eliminations Consolidated ASSETS Current Assets - Cash and Cash Equivalents $ 5,779 $ 2,822 $ — $ 8,601 Accounts and Notes Receivable 437 128,285 — 128,722 Inventories — 275,194 — 275,194 Income Tax Receivable 5,480 — — 5,480 Prepaid and Other Current Assets 1,472 8,152 — 9,624 Total Current Assets 13,168 414,453 — 427,621 Property, Plant and Equipment, net 7,756 1,419,183 — 1,426,939 Notes Receivable — 2,898 — 2,898 Investment in Joint Venture 70 64,803 — 64,873 Investments in Subsidiaries and Receivables from Affiliates 2,322,335 406,726 (2,729,061 ) — Goodwill and Intangible Assets, net — 229,115 — 229,115 Other Assets 4,571 13,146 — 17,717 $ 2,347,900 $ 2,550,324 $ (2,729,061 ) $ 2,169,163 LIABILITIES AND STOCKHOLDERS’ EQUITY Current Liabilities- Accounts Payable $ 5,520 $ 75,364 $ — $ 80,884 Accrued Liabilities 22,470 39,479 — 61,949 Current Portion of Long-term Debt 36,500 — — 36,500 Total Current Liabilities 64,490 114,843 — 179,333 Long-term Debt 655,092 — — 655,092 Other Long-term Liabilities 3,303 31,189 — 34,492 Payables to Affiliates 406,727 5,730,093 (6,136,820 ) — Deferred Income Taxes 8,801 81,958 — 90,759 Total Liabilities 1,138,413 5,958,083 (6,136,820 ) 959,676 Total Stockholders’ Equity 1,209,487 (3,407,759 ) 3,407,759 1,209,487 $ 2,347,900 $ 2,550,324 $ (2,729,061 ) $ 2,169,163 Condensed Consolidating Statement of Cash Flows For the Year Ended March 31, 2020 Parent Guarantor Subsidiaries Eliminations Consolidated CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities $ (181,476 ) $ 580,777 $ — $ 399,301 CASH FLOWS FROM INVESTING ACTIVITIES Additions to Property, Plant, and Equipment — (132,119 ) — (132,119 ) Investment in Subsidiaries (699,361 ) — 699,361 — Acquisition Spending — (699,361 ) — (699,361 ) Proceeds from Sales of Property, Plant, and Equipment 400 — — 400 Net Cash Used in Investing Activities (698,961 ) (831,480 ) 699,361.00 (831,080 ) CASH FLOWS FROM FINANCING ACTIVITIES Increase in Revolving Credit Facility 250,000 — — 250,000 Repayment of Private Placement Senior Unsecured Notes (36,500 ) — — (36,500 ) Issuance of Term Loan 665,000 — — 665,000 Dividends Paid to Stockholders (17,142 ) — — (17,142 ) Purchase and Retirement of Common Stock (313,887 ) — — (313,887 ) Proceeds from Stock Option Exercises 3,298 — — 3,298 Shares Redeemed to Settle Employee Taxes on Stock Compensation (4,063 ) — — (4,063 ) Payment of Debt Issuance Costs (4,880 ) — — (4,880 ) Intra-entity Activity, net 449,101 250,260 (699,361 ) — Net Cash Provided by (Used in) Financing Activities 990,927 250,260 (699,361 ) 541,826 NET INCREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH 110,490 (443 ) — 110,047 CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD 5,779 2,822 — 8,601 CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD $ 116,269 $ 2,379 $ — $ 118,648 Condensed Consolidating Statement of Cash Flows For the Year Ended March 31, 2019 Parent Guarantor Subsidiaries Eliminations Consolidated CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities $ 33,997 $ 316,287 $ — $ 350,284 CASH FLOWS FROM INVESTING ACTIVITIES Additions to Property, Plant, and Equipment (6,107 ) (162,766 ) — (168,873 ) Proceeds from Sales of Property, Plant, and Equipment — 2,281 — 2,281 Net Cash Used in Investing Activities (6,107 ) (160,485 ) — (166,592 ) CASH FLOWS FROM FINANCING ACTIVITIES Increase in Revolving Credit Facility 70,000 — — 70,000 Dividends Paid to Stockholders (18,927 ) — — (18,927 ) Purchase and Retirement of Common Stock (271,988 ) — — (271,988 ) Proceeds from Stock Option Exercises 2,103 — — 2,103 Shares Redeemed to Settle Employee Taxes on Stock Compensation (4,347 ) — — (4,347 ) Intra-entity Activity, net 156,511 (156,511 ) — — Net Cash Provided by (Used in) Financing Activities (66,648 ) (156,511 ) — (223,159 ) NET INCREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH (38,758 ) (709 ) — (39,467 ) CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD 44,537 3,531 — 48,068 CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD $ 5,779 $ 2,822 $ — $ 8,601 Condensed Consolidating Statement of Cash Flows For the Year Ended March 31, 2018 Parent Guarantor Subsidiaries Eliminations Consolidated CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities $ (83,947 ) $ 421,612 $ — $ 337,665 CASH FLOWS FROM INVESTING ACTIVITIES Additions to Property, Plant, and Equipment (142 ) (131,815 ) — (131,957 ) Investment in Subsidiaries (36,761 ) — 36,761 — Acquisition Spending — (36,761 ) — (36,761 ) Net Cash Used in Investing Activities (36,903 ) (168,576 ) 36,761 (168,718 ) CASH FLOWS FROM FINANCING ACTIVITIES Increase in Revolving Credit Facility 15,000 — — 15,000 Repayment of Private Placement Senior Unsecured Notes (81,214 ) — — (81,214 ) Dividends Paid to Stockholders (19,438 ) — — (19,438 ) Purchase and Retirement of Common Stock (61,078 ) — — (61,078 ) Proceeds from Stock Option Exercises 24,264 — — 24,264 Shares Redeemed to Settle Employee Taxes on Stock Compensation (4,974 ) — — (4,974 ) Intra-entity Activity, net 287,643 (250,882 ) (36,761 ) — Net Cash Provided by (Used in) Financing Activities 160,203 (250,882 ) (36,761 ) (127,440 ) NET INCREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH 39,353 2,154 — 41,507 CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD 5,184 1,377 — 6,561 CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD $ 44,537 $ 3,531 $ — $ 48,068

QUARTERLY RESULTS (UNAUDITED)

QUARTERLY RESULTS (UNAUDITED)	12 Months Ended
	Mar. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
QUARTERLY RESULTS (UNAUDITED)	(P) QUARTERLY RESULTS (UNAUDITED) For the Years Ended March 31, 2020 2019 (dollars in thousands, except per share data) First Quarter - Revenue $ 370,597 $ 393,756 Gross Profit 75,329 91,634 Earnings Before Income Taxes 54,861 85,021 Net Earnings 41,304 66,339 Diluted Earnings Per Share $ 0.94 $ 1.38 Second Quarter - Revenue $ 414,526 $ 381,499 Gross Profit 104,506 97,931 Earnings Before Income Taxes 94,210 91,793 Net Earnings 71,793 72,603 Diluted Earnings Per Share $ 1.72 $ 1.53 Third Quarter - Revenue $ 350,249 $ 333,285 Gross Profit 87,514 80,421 Earnings (Loss) Before Income Taxes (148,565 ) 74,518 Net Earnings (Loss) (114,632 ) 57,715 Diluted Earnings (Loss) Per Share $ (2.77 ) $ 1.24 Fourth Quarter - Revenue $ 315,442 $ 284,701 Gross Profit 63,913 56,582 Earnings (Loss) Before Income Taxes 45,218 (171,597 ) Net Earnings (Loss) 72,429 (127,797 ) Diluted Earnings (Loss) Per Share $ 1.74 $ (2.82 ) The third quarter of fiscal 2020 included a pre-tax impairment loss of approximately $224.3 million related to the Oil and Gas Proppants segment. See Footnote (A) for more information. The fourth quarter of fiscal 2020 included costs that were not incurred in the prior year. These pre-tax costs related to business development and separation costs of approximately $6.5 million, outage and purchase accounting costs at Kosmos Cement Company of approximately $6.8 million, and plant expansion costs at our recycled paper mill of approximately $3.0 million. The outage and purchase accounting costs and expansion costs are included in Cost of Goods Sold, while the business development and separation costs are included in Corporate, General and Administrative Expense on our Consolidated Statement of Earnings. The Company also recorded a $31.7 million net income tax benefit related to the CARES Act during the fourth quarter. See Footnote (J) for more information about the CARES Act. The fourth quarter of fiscal 2019 included a pre-tax impairment loss of approximately $220.3 million related to the Oil and Gas Proppants segment. See Footnote (A) for more information.

SIGNIFICANT ACCOUNTING POLICI_2

SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The consolidated financial statements include the accounts of Eagle Materials Inc. and its majority-owned subsidiaries (the Company), which may be referred to as we, our, or us. All intercompany balances and transactions have been eliminated. The Company is a holding company whose assets consist of its investments in its subsidiaries, joint venture, intercompany balances, and holdings of cash and cash equivalents. The businesses of the consolidated group are conducted through the Company’s subsidiaries. The Company conducts one of its cement plant operations through a joint venture, Texas Lehigh Cement Company L.P., which is located in Buda, Texas (the Joint Venture). Our investment in the Joint Venture is accounted for using the equity method of accounting, and those results have been included for the same period as our March 31 fiscal year end. The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. We have been deemed an essential business with respect to the COVID-19 pandemic. While we have not yet experienced a material impact on our operations or financial position from this pandemic, there may be future effects on our business, both directly and indirectly, including with respect to customers, manufacturing operations, employees, suppliers, and the building materials and construction markets in general.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash Equivalents include short-term, highly liquid investments with original maturities of three months or less and are recorded at cost, which approximates market value.
Accounts and Notes Receivable	Accounts and Notes Receivable Accounts and Notes Receivable have been shown net of the allowance for doubtful accounts of $12.4 million and $9.9 million at March 31, We had Notes Receivable totaling approximately $9.8 million at March 31, 2025 and 2026
Inventories	Inventories Inventories are stated at the lower of average cost (including applicable material, labor, depreciation, and plant overhead) or net realizable value. Raw Materials and Materials-in-Progress include clinker, which is an intermediary product before it is ground into cement powder. Quantities of Raw Materials and Materials-in-Progress, Aggregates and coal inventories, are based on measured volumes, subject to estimation based on the size and location of the inventory piles, and converted to tonnage using standard inventory density factors. Inventories consist of the following: March 31, 2020 2019 (dollars in thousands) Raw Materials and Materials-in-Progress $ 110,558 $ 125,828 Finished Cement 43,538 27,826 Aggregates 8,416 7,351 Gypsum Wallboard 4,211 7,124 Paperboard 5,715 15,660 Frac Sand 386 2,557 Repair Parts and Supplies 88,095 80,676 Fuel and Coal 11,589 8,172 $ 272,508 $ 275,194
Property, Plant and Equipment	Property, Plant, and Equipment Property, Plant, and Equipment are stated at cost. Major renewals and improvements are capitalized and depreciated. Annual maintenance is expensed as incurred. Depreciation is provided on a straight-line basis over the estimated useful lives of depreciable assets and totaled $109.5 million, $118.2 million, and $109.6 million, for the fiscal years ended March 31, Plants 20 to 30 years Buildings 20 to 40 years Machinery and Equipment 3 to 25 years We periodically evaluate whether current events or circumstances indicate that the carrying value of our depreciable assets may not be recoverable. During fiscal years 2020 and 2019, we recorded impairments of approximately $187.6 million and $211.3 million, respectively, related to property and equipment in our Oil and Gas Proppants segment. See Impairment or Disposal of Long-lived and Intangible Assets below for more information about the impairments.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill We annually assess Goodwill in the fourth quarter of our fiscal year, or more frequently when indicators of impairment exist. Impairment testing for Goodwill is done at the reporting unit, which is consistent with the reportable segment. Goodwill is considered impaired if the carrying value of the reporting unit exceeds its fair value. Prior to performing the Step 1 quantitative analysis, we may, at our discretion, perform an optional qualitative analysis, or we may choose to proceed directly to the Step 1 quantitative analysis. The qualitative analysis considers the impact of the following events and circumstances on the reporting unit being tested: macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, and other relevant entity-specific events. If, as a result of this qualitative analysis, we conclude that it is more likely than not (a likelihood of greater than 50%) that the fair value of the reporting unit exceeds its carrying value, then an impairment does not exist and the quantitative Step 1 analysis is not required. If we are unable to conclude that it is more likely than not that the fair value of the reporting unit exceeds its carrying value, then we proceed to the quantitative Step 1 analysis. Step 1 of the quantitative test for impairment compares the fair value of the reporting unit to its carrying value. If the carrying value exceeds the fair value, then an impairment is indicated. If facts and circumstances related to our business change in subsequent years, we may choose to perform a quantitative analysis in those future years. If we perform a Step 1 analysis, and the carrying value of the reporting unit exceeds its fair value, then an impairment charge equal to the difference, not to exceed the total amount of Goodwill, is recorded. The fair values of the reporting units are estimated by using both the market and income approaches. The market approach considers market factors and certain multiples in comparison to similar companies, while the income approach uses discounted cash flows to determine the estimated fair values of the reporting units. We also perform an overall comparison of all reporting units to our market capitalization in order to test the reasonableness of our fair value calculations. We performed qualitative assessments of our Cement, Gypsum Wallboard, and Recycled Paperboard reporting units in the fourth quarter of fiscal years 2020 and 2019. As a result of these qualitative assessments, we determined that it was not more likely than not that an impairment existed; therefore, we did not perform a Step 1 quantitative impairment test in either of these two fiscal years. We performed a quantitative Step 1 impairment test on our Oil and Gas Proppants reporting unit during the fourth quarter of fiscal 2019. We estimated the reporting unit’s fair value using a discounted cash flow model. Key assumptions in the model were: estimated average net sales prices, sales volumes, and the estimated discount rate of 11%. Based on the results of the Step 1 impairment analysis, we concluded that the entire balance of Goodwill in the Oil and Gas Proppants reporting unit was impaired, and we recorded an impairment loss of approximately $6.8 million in the reporting unit in the fourth quarter of fiscal 2019. Intangible Assets Intangible Assets, including the impact of the impairment charges discussed above, at March 31, March 31, 2020 Amortization Period Cost Additions Accumulated Amortization Net (dollars in thousands) Goodwill and Intangible Assets: Customer Contracts and Relationships 15 years $ 72,260 $ 33,550 $ (62,950 ) $ 42,860 Permits 25-40 years 28,640 1,770 (9,889 ) 20,521 Trade Name 15 years — 1,500 (10 ) 1,490 Goodwill 198,371 133,221 — 331,592 Total Goodwill and Intangible Assets $ 299,271 $ 170,041 $ (72,849 ) $ 396,463 March 31, 2019 Amortization Period Cost Accumulated Amortization Impairment Net (dollars in thousands) Goodwill and Intangible Assets: Customer Contracts and Relationships 15 years $ 72,260 $ (61,009 ) $ (178 ) $ 11,073 Sales Contracts 4 years 2,500 (2,500 ) — — Permits 40 years 28,640 (8,968 ) — 19,672 Goodwill 205,211 — (6,841 ) 198,370 Total Goodwill and Intangible Assets $ 308,611 $ (72,477 ) $ (7,019 ) $ 229,115 Amortization expense of intangibles was $2.5 million, $4.3 million, and $4.4 million for the years ended March 31,
Impairment or Disposal of Long-Lived and Intangible Assets	Impairment or Disposal of Long-Lived and Intangible Assets We assess our long-lived assets, including mining and related assets, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset, or group of assets, may not be recoverable. Long-lived assets, or groups of assets, are evaluated for impairment at the lowest level for which cash flows are largely independent of the cash flows of other assts. We assess recoverability of assets, or group of assets, by comparing the carrying amount of an asset, or group of assets, to the future undiscounted net cash flows that we expect the asset, or group of assets, to generate. These impairment evaluations are significantly affected by estimates of future revenue, costs and expenses, and other factors. If the carrying value of the assets, or group of assets, exceeds the undiscounted cash flows, then an impairment is indicated. If such assets, or group of assets, are considered to be impaired, the impairment is recognized as the amount by which the carrying amount of the asset, or group of assets, exceeds the fair value of the asset, or group of assets. Any assets held for sale are reflected at the lower of their carrying amount or fair value less cost to sell. Fiscal 2019 During the latter part of fiscal 2019, continued declining sales prices, sales volume and operating results in our Oil and Gas Proppants business led management to conclude that impairment indictors were present. The decline in sales volume was primarily related to decreased demand from the Permian Basin. The decline in orders was due to several factors, including reduced completion budgets, limited pipeline take away capacity in the Permian Basin, and an increase in the usage of in-basin regional sand. The capacity for in-basin sand has increased in recent years, and certain of our customers have shifted their purchases from northern white sand to lower cost regional sand. Because of the continuing shift in demand to regional sand, and the decline in our operating results, we concluded in the fourth quarter of fiscal 2019 that the reduction in sales volumes and operating losses were other than temporary and that long-lived asset impairment indicators were present in our Oil and Gas Proppants segment. Prior to performing tests to determine whether an impairment was present, we grouped the long-lived assets of the segment into the lowest level where cash flows are generated, which is considered the operating facility or distribution level. We then performed recoverability tests on each group of assets using probability-weighted estimates of forecasted undiscounted cash flows over the remaining estimated life of each asset group under a variety of scenarios. Based on these forecasts we concluded that the carrying values exceeded the undiscounted cash flows for our New Auburn, Wisconsin and Corpus Christi, Texas operating facilities and several distribution facilities related to these facilities, indicating impairment. Our operating facility in Utica, Illinois, which had a net book value of approximately $135.7 million, was not considered impaired at that time, as the undiscounted cash flows related to this facility exceeded its carrying value. For those impaired asset groups, we calculated the estimated fair value of the New Auburn, Wisconsin facility and related distribution terminals, using a discounted cash flow model (Level 3) which utilized a weighted-average cost of capital determined from relevant market comparisons and adjusted for specific risks. We compared the results of the discounted cash flow analysis to other recent market information about the value of similar assets, and noted the amounts to be consistent. The analysis resulted in an impairment loss of approximately $174.1 million. For our Corpus Christi, Texas facility, we determined that the value of the real estate was the highest and best use of the property, resulting in an impairment loss of approximately $37.2 million. The above analyses resulted in an impairment loss of approximately $211.3 million. The following is a summary of the impairment on the net book value of the long-lived assets: Net Book Value Before Impairment Impairment Net Book Value After Impairment (dollars in thousands) Operating Facilities $ 331,520 $ (151,910 ) $ 179,610 Transload Locations 86,741 (59,354 ) 27,387 Real Estate 1,417 — 1,417 $ 419,678 $ (211,264 ) $ 208,414 After recording these impairment losses, which totaled $211.3 million, the adjusted carrying value of the impaired assets and total long-lived assets was approximately $72.7 million and $208.4 million, respectively. In addition to the impairment of the operating facilities and transload facilities, we also assessed Goodwill and Intangible Assets and Inventory for impairment. As part of this analysis, we wrote down Goodwill (as noted above), and certain Intangible Assets and Inventories. The following is a summary of Impairment Losses recognized during fiscal 2019, by line item: (dollars in thousands) Property, Equipment, and Real Estate $ 211,264 Goodwill 6,841 Inventories 1,982 Intangible Assets 178 $ 220,265 Fiscal 2020 During the second half of calendar year 2019, our Oil and Gas Proppants financial results were further negatively affected by a combination of low demand for our products and the increased use of in-basin sand instead of northern white frac sand. Faced with these dynamics, in connection with the preparation of our financial statements for the three and nine months ended December 31, 2019, we concluded that the reduction in sales volumes and operating losses were other than temporary and that long-lived asset impairment indicators were present in our Oil and Gas Proppants segment. Prior to performing recoverability tests to determine whether an impairment was present, we grouped the long-lived assets of the segment into the lowest level at which cash flows are generated, which is considered the operating facility or distribution level. We included the value of our Operating Lease Right-of-Use Assets that support the operating facilities within the value of the operating facility prior to performing our recoverability tests. We then performed recoverability tests on each group of assets using probability-weighted estimates of forecasted undiscounted cash flows over the remaining estimated life of each asset group under a variety of scenarios. Based on these forecasts, we concluded that the carrying values exceeded the undiscounted cash flows for our New Auburn, Wisconsin and Utica, Illinois operating facilities and several distribution facilities related to these operating facilities, indicating impairment. For the impaired asset groups, we calculated the estimated fair value of the operating facilities in New Auburn, Wisconsin, Utica, Illinois and related distribution terminals, using a discounted cash flow model (Level 3), which utilized a weighted-average cost of capital determined from relevant market comparisons and adjusted for specific risks. We compared the results of the discounted cash flow model to other recent market information about the value of similar assets, noting the amounts to be consistent. The analysis resulted in an impairment loss of approximately $216.8 million. The following is a summary of the impairment on the net book value of the long-lived assets: Net Book Value Before Impairment Impairment Net Book Value After Impairment (dollars in thousands) Operating Facilities $ 170,324 $ (164,449 ) $ 5,875 Transload Locations 23,264 (21,815 ) 1,449 Real Estate 1,417 (1,367 ) 50 Lease Right-of-Use Assets 32,834 (29,146 ) 3,688 $ 227,839 $ (216,777 ) $ 11,062 In addition to the impairment of the operating facilities and transload facilities, we also assessed other current and long-term assets for impairment. As part of this analysis, we wrote down certain Inventories, Accounts and Notes Receivable, and Prepaid and Other Assets. The Oil and Gas Proppants business has liabilities related to its capitalized operating leases and asset retirement obligation that total $17.9 million at March 31, 2020. The following is a summary of Impairment Losses recognized during fiscal 2020, by line item: (dollars in thousands) Property, Equipment, and Real Estate $ 187,631 Lease Right-of-Use Assets 29,146 Inventories 6,256 Accounts and Notes Receivable 617 Prepaid and Other Assets 617 $ 224,267 Our Oil and Gas Proppants business continues to be subject to commodity price volatility related to the price of oil. As previously disclosed, we are actively pursuing alternatives for our Oil and Gas Proppants business. If this process results in an alternative use or disposition of this business, additional impairment or other losses may be incurred.
Other Assets	Other Assets Other Assets are primarily composed of financing costs related to our revolving credit facility, deferred expenses, and deposits.
Income Taxes	Income Taxes We account for Income Taxes using the asset and liability method. The effect on deferred taxes of a change in tax rates is recognized in earnings in the period that includes the enactment date. We recognize deferred taxes for the differences between financial statement carrying amounts and the tax bases of existing assets and liabilities by applying enacted statutory tax rates for future years. In addition, we recognize future tax benefits to the extent that such benefits are more likely than not to be realized.
Stock Repurchases	Stock Repurchases On April 18, years
Revenue Recognition	Revenue Recognition We earn Revenue primarily from the sale of products, which include cement, concrete, aggregates, gypsum wallboard, recycled paperboard, and frac sand. The majority of Revenue from the sale of cement, concrete, aggregates, and gypsum wallboard is originated by purchase orders from our customers, who are primarily third-party contractors and suppliers. Revenue from our Recycled Paperboard and Oil and Gas Proppants segments is generated primarily through long-term supply agreements that mature between calendar years 2020 and 2025. We also earn Revenue from transload services and storage; we recognize Revenue from these services when the product is transferred from the rail car to the truck or silo, or from the silo to the railcar or truck. We invoice customers upon shipment, and our collection terms range from 30-65 days. Revenue from the sale of cement, concrete, aggregates, and gypsum wallboard that is not related to long-term supply agreements is recognized upon shipment of the related products to customers, which is when title and ownership are transferred, and the customer is obligated to pay. Revenue from sales under our long-term supply agreements is also recognized upon transfer of control to the customer, which generally occurs at the time the product is shipped from the production facility or transload location. Our long-term supply agreements with customers define, among other commitments, the volume of product that we must provide and the volume that the customer must purchase by the end of the defined periods. Pricing structures under our agreements are generally market-based but are subject to certain contractual adjustments. Historically , the pricing and volume requirements under certain of these contracts have been renegotiated during volatile market conditions. Shortfall amounts, if applicable under these arrangements, are constrained and not recognized as Revenue until agreement is reached with the customer and there is no risk of reversal. The Company offers certain of its customers, including those with long-term supply agreements, rebates and incentives, which we treat as variable consideration. We adjust the amount of revenue recognized for the variable consideration using the most likely amount method based on past history and projected volumes in the rebate and incentive period. Any amounts billed to customers for taxes are excluded from Revenue. The Company has elected to treat freight and delivery charges we pay for the delivery of goods to our customers as a fulfilment activity rather than a separate performance obligation. When we arrange for a third party to deliver products to customers, fees for shipping and handling that are billed to the customer are recorded as Revenue, while costs we incur for shipping and handling are recorded as expenses and included in Cost of Goods Sold. Approximately $168.1 million, $169.6 million, and $158.3 million of freight for the years ended March 31, 2020, 2019 and 2018, respectively, were included in both Revenue and Cost of Goods Sold in our Consolidated Statement of Earnings. Other Non-Operating Income includes lease and rental income, asset sale income, non-inventoried aggregates sales income, and trucking income, as well as other miscellaneous revenue items and costs which have not been allocated to a business segment. See Footnote (I) for disaggregation of Revenue by segment.
Comprehensive Income/Losses	Comprehensive Income/Losses As of March 31,
Consolidated Cash Flows - Supplemental Disclosures	Consolidated Cash Flows – Supplemental Disclosures Supplemental cash flow information is as follows: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Cash Payments: Interest $ 37,610 $ 28,191 $ 28,869 Income Taxes 20,046 39,974 69,481 Operating Cash Flows used for Operating Leases 14,926 — — Non-Cash Financing Activities: Right-of-use Assets Obtained for Capitalized Operating Lease Liabilities $ 621 $ — $ —
Statements of Consolidated Earnings - Supplemental Disclosures	Statements of Consolidated Earnings – Supplemental Disclosures Maintenance and repair expenses are included in each segment’s costs and expenses. We incurred $127.0 million, $116.3 million, and $107.3 million of maintenance and repairs expense in the years ended March 31,
Selling, General and Administrative Expenses	Selling, General, and Administrative Expenses Selling, General, and Administrative expenses of the operating units are included in Cost of Goods Sold on the Consolidated Statements of Earnings. Corporate General and Administrative (Corporate G&A) expenses include administration, financial, legal, employee benefits, and other corporate activities, and are shown separately in the Consolidated Statements of Earnings. Corporate G&A also includes stock compensation expense. See Footnote (L) for more information. Total Selling, General, and Administrative expenses for each of the periods are summarized as follows: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Operating Units Selling, G&A $ 57,077 $ 53,787 $ 62,529 Corporate G&A 65,410 37,371 41,205 $ 122,487 $ 91,158 $ 103,734 The increase in Corporate General and Administrative Expenses during fiscal 2020 is primarily due to business development costs related to our pending separation, acquisitions, and the acceleration of stock compensation costs upon the retirement of our Chief Executive Officer during the year.
Earnings Per Share	Earnings Per Share For the Years Ended March 31, 2020 2019 2018 Weighted-Average Shares of Common Stock Outstanding 42,021,892 46,620,894 48,141,226 Effect of Dilutive Shares: Assumed Exercise of Outstanding Dilutive Options 623,779 539,135 1,013,764 Less Shares Repurchased from Proceeds of Assumed Exercised Options (481,853 ) (374,380 ) (727,904 ) Restricted Stock Units 121,525 146,731 218,900 Weighted-Average Common Stock and Dilutive Securities Outstanding 42,285,343 46,932,380 48,645,986 The line Less Shares Repurchased from Proceeds of Assumed Exercised Options includes unearned compensation related to outstanding stock options. There were 475,082; 461,575; and 98,362 stock options at an average exercise price of $95.46 per share, $90.32 per share, and $98.75 per share, respectively, that were excluded from the computation of diluted earnings per share for the fiscal years ended March 31,
Share-Based Compensation	Share-Based Compensation All share-based compensation is valued at the grant date and expensed over the requisite service period, which is generally identical to the vesting period of the award. Forfeitures of share-based awards are recognized in the period in which they occur.
Fair Value Measures	Fair Value Measures Certain assets and liabilities are required to be recorded or disclosed at fair value. The estimated fair values of those assets and liabilities have been determined using market information and valuation methodologies. Changes in assumptions or estimation methods could affect the fair value estimates; however, we do not believe any such changes would have a material impact on our financial condition, results of operations, or cash flows. There are three levels of inputs that may be used to measure fair value: Level 1 – Quoted prices for identical assets and liabilities in active markets; Level 2 – Quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data; and Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. This includes certain pricing models, discounted cash flow methodologies, and similar techniques that use significant unobservable inputs.
Recent Accounting Pronouncements	Recent Accounting Pronouncements RECENTLY ADOPTED In February 2016, the FASB issued ASU 2016-02, “Leases,” which supersedes existing lease guidance to require lessees to recognize right-of-use assets and liabilities on the balance sheet for the rights and obligations created by long-term leases and to disclose additional quantitative and qualitative information about leasing arrangements. We also elected the package of practical expedients permitted under the transition guidance which, among other things, allowed us to maintain the historic lease classification for leases in effect at the date of adoption, and to not separate lease components from nonlease components for all leases in effect at the date of adoption. Upon adoption, we recorded a right-of-use asset of approximately $66.7 million, and operating lease liabilities of approximately $71.1 million . See Footnote (F) for more information. PENDING ADOPTION In June 2016, the FASB issued an update on the measurement of credit losses on financial instruments, which requires entities to use a forward-looking approach based on expected losses rather than the current model of incurred losses to estimate credit losses on certain types of financial instruments, including Accounts and Notes Receivable. The application of the forward-looking model may result in earlier recognition of allowances for losses than the current method. This guidance became effective on April 1, 2020. We are currently assessing the impact of the new standard, but we do not expect the adoption will have a material effect on our consolidated financial statements and disclosures. In December 2019, the FASB issued ASU 2019-12 which simplifies the accounting for income taxes, eliminates certain exceptions within existing income tax guidance, and clarifies certain aspects of the current guidance to promote consistency among reporting entities. The updated standard is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020, with early adoption permitted. We do not expect the adoption of this standard will have a material impact to our consolidated financial statements.

SIGNIFICANT ACCOUNTING POLICI_3

SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Schedule of Inventories	Inventories consist of the following: March 31, 2020 2019 (dollars in thousands) Raw Materials and Materials-in-Progress $ 110,558 $ 125,828 Finished Cement 43,538 27,826 Aggregates 8,416 7,351 Gypsum Wallboard 4,211 7,124 Paperboard 5,715 15,660 Frac Sand 386 2,557 Repair Parts and Supplies 88,095 80,676 Fuel and Coal 11,589 8,172 $ 272,508 $ 275,194
Schedule of Property, Plant and Equipment Estimated Useful Lives	The estimated useful lives of the related assets are as follows: Plants 20 to 30 years Buildings 20 to 40 years Machinery and Equipment 3 to 25 years
Schedule of Intangible Assets, Including Impact of Impairment Charge	Intangible Assets, including the impact of the impairment charges discussed above, at March 31, March 31, 2020 Amortization Period Cost Additions Accumulated Amortization Net (dollars in thousands) Goodwill and Intangible Assets: Customer Contracts and Relationships 15 years $ 72,260 $ 33,550 $ (62,950 ) $ 42,860 Permits 25-40 years 28,640 1,770 (9,889 ) 20,521 Trade Name 15 years — 1,500 (10 ) 1,490 Goodwill 198,371 133,221 — 331,592 Total Goodwill and Intangible Assets $ 299,271 $ 170,041 $ (72,849 ) $ 396,463 March 31, 2019 Amortization Period Cost Accumulated Amortization Impairment Net (dollars in thousands) Goodwill and Intangible Assets: Customer Contracts and Relationships 15 years $ 72,260 $ (61,009 ) $ (178 ) $ 11,073 Sales Contracts 4 years 2,500 (2,500 ) — — Permits 40 years 28,640 (8,968 ) — 19,672 Goodwill 205,211 — (6,841 ) 198,370 Total Goodwill and Intangible Assets $ 308,611 $ (72,477 ) $ (7,019 ) $ 229,115
Summary of Impact of Impairment on Net Book Value of Assets	The following is a summary of the impairment on the net book value of the long-lived assets: Net Book Value Before Impairment Impairment Net Book Value After Impairment (dollars in thousands) Operating Facilities $ 331,520 $ (151,910 ) $ 179,610 Transload Locations 86,741 (59,354 ) 27,387 Real Estate 1,417 — 1,417 $ 419,678 $ (211,264 ) $ 208,414 The following is a summary of the impairment on the net book value of the long-lived assets: Net Book Value Before Impairment Impairment Net Book Value After Impairment (dollars in thousands) Operating Facilities $ 170,324 $ (164,449 ) $ 5,875 Transload Locations 23,264 (21,815 ) 1,449 Real Estate 1,417 (1,367 ) 50 Lease Right-of-Use Assets 32,834 (29,146 ) 3,688 $ 227,839 $ (216,777 ) $ 11,062
Summary of Impairment Losses Recognized	The following is a summary of Impairment Losses recognized during fiscal 2019, by line item: (dollars in thousands) Property, Equipment, and Real Estate $ 211,264 Goodwill 6,841 Inventories 1,982 Intangible Assets 178 $ 220,265 The following is a summary of Impairment Losses recognized during fiscal 2020, by line item: (dollars in thousands) Property, Equipment, and Real Estate $ 187,631 Lease Right-of-Use Assets 29,146 Inventories 6,256 Accounts and Notes Receivable 617 Prepaid and Other Assets 617 $ 224,267
Schedule of Supplemental Cash Flow Information	Supplemental cash flow information is as follows: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Cash Payments: Interest $ 37,610 $ 28,191 $ 28,869 Income Taxes 20,046 39,974 69,481 Operating Cash Flows used for Operating Leases 14,926 — — Non-Cash Financing Activities: Right-of-use Assets Obtained for Capitalized Operating Lease Liabilities $ 621 $ — $ —
Schedule of Total Selling, General and Administrative Expenses	Total Selling, General, and Administrative expenses for each of the periods are summarized as follows: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Operating Units Selling, G&A $ 57,077 $ 53,787 $ 62,529 Corporate G&A 65,410 37,371 41,205 $ 122,487 $ 91,158 $ 103,734
Schedule of Earnings Per Share	For the Years Ended March 31, 2020 2019 2018 Weighted-Average Shares of Common Stock Outstanding 42,021,892 46,620,894 48,141,226 Effect of Dilutive Shares: Assumed Exercise of Outstanding Dilutive Options 623,779 539,135 1,013,764 Less Shares Repurchased from Proceeds of Assumed Exercised Options (481,853 ) (374,380 ) (727,904 ) Restricted Stock Units 121,525 146,731 218,900 Weighted-Average Common Stock and Dilutive Securities Outstanding 42,285,343 46,932,380 48,645,986

ACQUISITION (Tables)

ACQUISITION (Tables)	12 Months Ended
	Mar. 31, 2020
Preliminary Fair Values of the Assets Acquired and Liabilities Assumed	The following table summarizes the provisional allocation of the purchase price to assets acquired and liabilities assumed as of the acquisition date: As of March 6, 2020 (dollars in thousands) Inventories $ 28,413 Property, Plant, and Equipment 477,442 Intangible Assets 35,500 Lease Right-of-Use Assets 3,858 Lease Obligations (3,858 ) Long-term Liabilities (4,000 ) Total Net Assets 537,355 Goodwill 131,582 Total Estimated Purchase Price $ 668,937
Summary of the Fair Value Estimates of the Identifiable Intangible Assets	The following table is a summary of the fair value estimates of the identifiable intangible assets (dollars in thousands) and their weighted-average useful lives: Weighted-Average Life Estimated Fair Value Permits 20 1,500 Customer Relationships 15 32,500 Trade Name and Technology 10 1,500 Total Intangible Assets $ 35,500
Actual and Pro Forma Impact on Net Sales and Operating Loss	Actual and pro forma impact of Kosmos Acquisition: For the Fiscal Year Ended March 31, 2020 (dollars in thousands) Revenue $ 7,880 Operating Income (Loss) $ (6,756 )
Unaudited Pro Forma Results	The unaudited pro forma results presented below include the effects of the Kosmos Acquisition as if it had been consummated as of April 1, 2018. The pro forma results include estimates for depreciation from the fair value adjustments to acquired Property and Equipment, amortization for acquired Intangible Assets, the Inventory step-up to fair value, and interest expense associated with debt used to fund the Kosmos Acquisition. To better reflect the combined operating results, material nonrecurring charges directly related to the Kosmos Acquisition of approximately $5.6 million have been excluded from pro forma net income. Additionally, we excluded a tax benefit of approximately $31.7 million that would not have been available to us had the acquisition occurred on April 1, 2018. See Footnote (J) for more information on the tax benefit. For the Fiscal Year Ended March 31, 2020 2019 Unaudited (dollars in thousands) Revenue $ 1,605,123 $ 1,554,337 Net Income $ 50,189 $ 66,377 Earnings per share – basic $ 1.19 $ 1.42 Earnings per share - diluted $ 1.19 $ 1.41
ConAgg Acquisition [Member]
Preliminary Fair Values of the Assets Acquired and Liabilities Assumed	The purchase price for the ConAgg Acquisition was allocated as follows: As of August 2, 2019 (dollars in thousands) Accounts Receivable $ 6,302 Inventories 1,921 Property, Plant, and Equipment 22,620 Intangible Assets 1,320 Lease Right-of-Use Assets 3,263 Other Assets 10 Lease Obligations (3,263 ) Accounts Payable and Accrued Expenses (3,388 ) Total Net Assets 28,785 Goodwill 1,639 Total Estimated Purchase Price $ 30,424

PROPERTY, PLANT AND EQUIPMENT (

PROPERTY, PLANT AND EQUIPMENT (Tables)	12 Months Ended
	Mar. 31, 2020
Property Plant And Equipment [Abstract]
Schedule of Property, Plant and Equipment	Cost by major category and Accumulated Depreciation are summarized as follows: March 31, 2020 2019 (dollars in thousands) Land and Quarries $ 431,242 $ 379,337 Plants 2,483,246 2,006,870 Buildings, Machinery and Equipment 255,758 219,556 Construction in Progress 30,406 85,886 3,200,652 2,691,649 Accumulated Depreciation (1,438,543 ) (1,264,710 ) $ 1,762,109 $ 1,426,939

ACCRUED EXPENSES (Tables)

ACCRUED EXPENSES (Tables)	12 Months Ended
	Mar. 31, 2020
Payables And Accruals [Abstract]
Schedule of Accrued Expenses	Accrued expenses consist of the following: As of March 31, 2020 2019 (dollars in thousands) Payroll and Incentive Compensation $ 25,584 $ 26,225 Benefits 12,521 12,673 Interest 4,080 3,852 Property Taxes 6,676 5,058 Power and Fuel 1,353 1,644 Litigation Settlements and Expenses — 1,900 Legal and Professional 16,096 — Sales and Use Tax 1,085 2,167 Other 5,898 8,430 $ 73,293 $ 61,949

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Schedule of Lease Expense for Operating and Short-Term Leases	Lease expense for our operating and short-term leases is as follows: For the Year Ended March 31, 2020 (dollars in thousands) Operating Lease Cost $ 13,315 Short-term Lease Cost 1,470 Total Lease Cost $ 14,785
Schedule of Balance Sheet Information Related to Leases	The Right-of-Use Assets and Lease Liabilities are reflected on our Balance Sheet as follows: For the Year Ended March 31, 2020 (dollars in thousands) Operating Leases: Operating Lease Right-of-Use Assets $ 30,530 Current Operating Lease Liabilities $ 10,207 Noncurrent Operating Lease Liabilities 49,809 Total Operating Lease Liabilities $ 60,016
Schedule of Future Payments for Operating Leases	Future payments for operating leases are as follows: Amount Fiscal Year (dollars in thousands) 2021 $ 12,036 2022 10,781 2023 10,067 2024 8,222 2025 6,884 Thereafter 24,624 Total Lease Payments $ 72,614 Less: Imputed Interest (12,598 ) Present Value of Lease Liabilities $ 60,016 Weighted Average Remaining Lease Term (in years) 9.2 Weighted Average Discount Rate 3.78 %

INDEBTEDNESS (Tables)

INDEBTEDNESS (Tables)	12 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Long-Term Debt	Long-term debt consists of the following: As of March 31, 2020 2019 (dollars in thousands) Revolving Credit Facility $ 560,000 $ 310,000 4.500% Senior Unsecured Notes Due 2026 350,000 350,000 Term Loan 665,000 — Private Placement Senior Unsecured Notes — 36,500 Total Debt 1,575,000 696,500 Less: Current Portion of Long-term Debt — (36,500 ) Less: Debt Origination Costs (7,685 ) (4,908 ) Long-term Debt $ 1,567,315 $ 655,092
Schedule of Maturities of Long-Term Debt	Our maturities of long-term debt during the next five fiscal years and thereafter are as follows: Fiscal Year Amount 2021 $ — 2022 — 2023 1,225,000 2024 — 2025 — Thereafter 350,000 Total $ 1,575,000
Schedule of Senior Unsecured Notes Redemption Prices	Beginning August 1, Percentage 2021 102.25 % 2022 101.50 % 2023 100.75 % 2024 and thereafter 100.00 %

FAIR VALUE OF FINANCIAL INSTR_2

FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)	12 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value of Senior Notes	The fair value of our senior notes has been estimated based upon our current incremental borrowing rates for similar types of borrowing arrangements. The fair value of our Senior Unsecured Notes at March 31, Fair Value (dollars in thousands) 4.500% Senior Unsecured Notes Due 2026 $ 320,560

BUSINESS SEGMENTS (Tables)

BUSINESS SEGMENTS (Tables)	12 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Financial Information Related to Operations by Segment	The following tables below sets forth certain financial information relating to our operations by segment. For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Revenue - Cement $ 752,002 $ 656,759 $ 651,750 Concrete and Aggregates 182,775 140,173 157,013 Gypsum Wallboard 508,145 532,712 491,779 Paperboard 159,963 167,656 181,742 Oil and Gas Proppants 46,781 82,987 98,244 1,649,666 1,580,287 1,580,528 Less: Intersegment Revenue (85,316 ) (82,553 ) (88,124 ) Less: Joint Venture Revenue (113,536 ) (104,493 ) (105,884 ) $ 1,450,814 $ 1,393,241 $ 1,386,520 For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Intersegment Revenue - Cement $ 21,499 $ 14,408 $ 16,442 Concrete and Aggregates 1,502 1,422 1,335 Paperboard 62,315 66,723 70,347 $ 85,316 $ 82,553 $ 88,124 Cement Sales Volume (M tons) - Wholly Owned 4,975 4,441 4,453 Joint Venture 956 899 912 5,931 5,340 5,365 For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Operating Earnings - Cement $ 181,330 $ 164,782 $ 179,151 Concrete and Aggregates 17,558 12,866 17,854 Gypsum Wallboard 154,614 180,831 158,551 Paperboard 34,979 35,349 32,758 Oil and Gas Proppants (14,634 ) (28,695 ) (6,139 ) Sub-Total 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 (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 $ 45,724 $ 79,735 $ 271,962 Cement Operating Earnings - Wholly Owned $ 138,745 $ 126,217 $ 135,732 Joint Ventures 42,585 38,565 43,419 $ 181,330 $ 164,782 $ 179,151 Capital Expenditures - Cement $ 44,776 $ 76,504 $ 45,088 Concrete and Aggregates 11,898 6,649 4,977 Gypsum Wallboard 12,771 10,724 19,382 Paperboard 62,528 16,603 5,177 Oil and Gas Proppants 146 52,286 56,872 Other, net — 6,107 461 $ 132,119 $ 168,873 $ 131,957 Depreciation, Depletion, and Amortization - Cement $ 59,081 $ 52,802 $ 50,891 Concrete and Aggregates 11,142 8,176 7,931 Gypsum Wallboard 20,320 20,020 18,179 Paperboard 8,945 8,541 8,694 Oil and Gas Proppants 11,310 31,328 26,872 Corporate and Other 2,720 1,668 1,448 $ 113,518 $ 122,535 $ 114,015 As of March 31, 2020 2019 2018 (dollars in thousands) Identifiable Assets Cement $ 1,980,306 $ 1,289,468 $ 1,247,504 Concrete and Aggregates 136,041 95,084 104,851 Gypsum Wallboard 375,946 372,206 386,041 Paperboard 183,288 138,614 123,819 Oil and Gas Proppants 14,294 236,357 444,826 Other, net 271,145 37,434 60,962 $ 2,961,020 $ 2,169,163 $ 2,368,003
Segment Breakdown of Goodwill	The segment breakdown of Goodwill at March 31, For the Years Ended March 31, 2020 2019 (dollars in thousands) Cement $ 205,797 $ 74,214 Concrete and Aggregates 1,639 — Gypsum Wallboard 116,618 116,618 Paperboard 7,538 7,538 $ 331,592 $ 198,370

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Schedule of Components of Provision for Income Taxes	The provision for income taxes includes the following components: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Current Provision (Benefit) - Federal $ (102,080 ) $ 32,710 $ 58,695 State 923 6,536 5,989 (101,157 ) 39,246 64,684 Deferred Provision (Benefit) - Federal 76,255 (21,039 ) (52,333 ) State (268 ) (7,332 ) 2,979 75,987 (28,371 ) (49,354 ) Provision (Benefit) for Income Taxes $ (25,170 ) $ 10,875 $ 15,330
Schedule of Effective Tax Rates Vary from Federal Statutory Rates	The effective tax rates vary from the federal statutory rates due to the following items: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Earnings Before Income Taxes $ 45,724 $ 79,735 $ 271,962 Income Taxes at Statutory Rate $ 9,602 $ 16,744 $ 85,804 Increases (Decreases) in Tax Resulting from - State Income Taxes, net (1,703 ) (629 ) 6,139 Statutory Depletion in Excess of Cost (3,078 ) (3,834 ) (6,341 ) Domestic Production Activities Deduction — — (5,995 ) Excess Tax Benefit from Stock Compensation 307 (651 ) (4,129 ) Meals and Entertainment Disallowance 537 610 567 Limitation on Officer's Compensation 1,018 1,434 246 Impact of Tax Cuts and Jobs Act of 2017 — — (61,692 ) Impact of CARES Act of 2020 (35,936 ) — — Credits (2,150 ) (940 ) — Valuation Allowance 2,212 (2,100 ) — Unrecognized Tax Benefits 4,200 — — Other (179 ) 241 731 Provision for Income Taxes $ (25,170 ) $ 10,875 $ 15,330 Effective Tax Rate (55 )% 14 % 6 %
Schedule of Components of Deferred Income Taxes	Components of deferred income taxes are as follows: March 31, 2020 2019 (dollars in thousands) Items Giving Rise to Deferred Tax Liabilities - Excess Tax Depreciation and Amortization $ (199,096 ) $ (108,505 ) State Income Taxes, net (12,225 ) (9,236 ) Right-of-Use Asset (5,441 ) — Other (5,764 ) (5,628 ) Total Deferred Tax Liabilities $ (222,526 ) $ (123,369 ) Items Giving Rise to Deferred Tax Assets - Change in Accruals $ 9,373 $ 8,601 Depletable Assets 12,632 8,995 Inventory 7,217 6,046 Bad Debts 2,642 2,169 Long-term Incentive Compensation Plan 5,590 5,154 Credits and Other Carryforwards 19,861 12,289 Lease Liability 11,384 — Pension 937 921 Subtotal 69,636 44,175 Valuation Allowance (13,777 ) (11,565 ) Total Deferred Tax Assets $ 55,859 $ 32,610
Reconciliation of Consolidated Liability for Gross Unrecognized Tax Benefits	The change in unrecognized tax benefits for the years ended March 31, 2020, 2019, and 2018 was as follows: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Balance at Beginning of Year $ — $ — $ — Increase related to current tax positions 4,200 — — Decrease related to current tax positions — — — Payments — — — $ 4,200 $ — $ —

STOCK OPTION PLANS (Tables)

STOCK OPTION PLANS (Tables)	12 Months Ended
	Mar. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Weighted-Average Assumptions Used to Value Option Awards	The weighted-average assumptions used in the Black-Scholes model to value the option awards in fiscal 20 20 and 201 9 are as follows: 2020 2019 Dividend Yield 1.3 % 1.3 % Expected Volatility 31.4 % 32.7 % Risk Free Interest Rate 2.31 % 2.85 % Expected Life 6.0 years 6.0 years
Stock Option Activity	The following table shows stock option activity for the years presented: For the Years Ended March 31, 2020 2019 2018 Number of Shares Weighted- Average Exercise Price Number of Shares Weighted- Average Exercise Price Number of Shares Weighted- Average Exercise Price Outstanding Options at Beginning of Year 1,042,925 $ 76.88 958,136 $ 72.52 1,323,379 $ 66.07 Granted 187,375 $ 91.58 125,734 $ 103.53 119,986 $ 100.20 Exercised (62,326 ) $ 88.28 (38,748 ) $ 54.27 (448,295 ) $ 60.27 Cancelled (7,883 ) $ 102.69 (2,197 ) $ 100.88 (36,934 ) $ 79.97 Outstanding Options at End of Year 1,160,091 $ 80.36 1,042,925 $ 76.88 958,136 $ 72.52 Options Exercisable at End of Year 868,081 761,564 651,218 Weighted-Average Fair Value of Options Granted during the Year $ 27.35 $ 33.11 $ 33.37
Stock Options Outstanding	The following table summarizes information about stock options outstanding at March 31, Options Outstanding Options Exercisable Range of Exercise Prices Number of Shares Outstanding Weighted Average Remaining Contractual Life Weighted- Average Exercise Price Number of Shares Outstanding Weighted- Average Exercise Price $23.17 - $29.84 65,912 1.35 $ 23.27 65,912 $ 23.27 $33.43 - $37.34 57,728 2.21 $ 34.03 57,728 $ 34.03 $53.22 - $77.67 267,763 5.28 $ 72.46 233,949 $ 72.37 $79.73 - $106.24 768,688 6.72 $ 91.49 510,492 $ 89.24 1,160,091 5.86 $ 80.36 868,081 $ 76.01
Summary of Activity for Nonvested Restricted Shares	The fair value of restricted stock is estimated based on the stock price at the date of the grant. The following table summarizes the activity for nonvested restricted shares during the fiscal years ended March 31, 2020, 2019, and 2018: For the Years Ended March 31, 2020 2019 2018 Number of Shares Weighted Average Grant Date Fair Value Number of Shares Weighted Average Grant Date Fair Value Number of Shares Weighted Average Grant Date Fair Value Nonvested Restricted Stock at Beginning of Year 300,115 $ 78.94 328,059 $ 72.52 371,213 $ 66.07 Granted 118,292 $ 90.08 121,836 $ 105.73 107,964 $ 100.20 Vested (169,347 ) $ 92.98 (147,790 ) $ 75.94 (119,187 ) $ 60.27 Forfeited (15,940 ) $ 58.64 (1,990 ) $ 100.88 (31,931 ) $ 79.97 Nonvested Restricted Stock at End of Year 233,120 $ 75.35 300,115 $ 78.94 328,059 $ 72.52

NET INTEREST EXPENSE (Tables)

NET INTEREST EXPENSE (Tables)	12 Months Ended
	Mar. 31, 2020
Banking And Thrift Interest [Abstract]
Net Interest Expense, Net	The following components are included within Interest Expense, net: For the Years Ended March 31, 2020 2019 2018 (dollars in thousands) Interest Income $ (34 ) $ (123 ) $ (14 ) Interest Expense 36,956 27,329 26,433 Other Expenses 1,499 1,168 1,219 Interest Expense, net $ 38,421 $ 28,374 $ 27,638

PENSION AND PROFIT SHARING PL_2

PENSION AND PROFIT SHARING PLANS (Tables)	12 Months Ended
	Mar. 31, 2020
Compensation And Retirement Disclosure [Abstract]
Schedule of Reconciliation of Obligations and Fair Values of Plan Assets	The following table provides a reconciliation of the Obligations and Fair Values of Plan Assets for all defined benefit plans over the two-year period ended March 31, For the Years Ended March 31, 2020 2019 (dollars in thousands) Reconciliation of Benefit Obligations - Benefit Obligation at April 1, $ 33,730 $ 33,370 Service Cost - Benefits Earned During the Period 339 399 Interest Cost on Projected Benefit Obligation 1,351 1,347 Actuarial (Gain) Loss 2,464 (306 ) Benefits Paid (1,183 ) (1,080 ) Benefit Obligation at March 31, $ 36,701 $ 33,730 Reconciliation of Fair Value of Plan Assets - Fair Value of Plan Assets at April 1, $ 36,541 $ 33,412 Actual Return on Plan Assets 3,651 2,169 Employer Contributions — 2,040 Benefits Paid (1,183 ) (1,080 ) Fair Value of Plan Assets at March 31, 39,009 36,541 Funded Status - Funded Status at March 31, $ 2,308 $ 2,811 Amounts Recognized in the Balance Sheet Consist of - Other Assets $ 2,308 $ 2,811 Accumulated Other Comprehensive Losses: Net Actuarial Loss 4,709 4,346 Prior Service Cost — 19 Accumulated Other Comprehensive Losses $ 4,709 $ 4,365 Reclassification to Retained Earnings — — Tax impact (1,149 ) (1,049 ) Accumulated Other Comprehensive Losses, net of tax $ 3,560 $ 3,316
Summary of Projected Benefit Obligation, Accumulated Benefit Obligation and Fair Value of Plan Assets	The table below summarizes the Company’s Projected Benefit Obligation, Accumulated Benefit Obligation and Fair Value of Plan Assets at March 31, 2020 and 2019: March 31, 2020 2019 (dollars in thousands) Projected Benefit Obligation $ 36,701 $ 33,730 Accumulated Benefit Obligation $ 36,701 $ 33,727 Fair Value of Plan Assets $ 39,009 $ 36,541
Components of Net Periodic Cost	Net periodic pension cost for the fiscal years ended March 31, For the Years Ended March 31, 2020 2019 2018 (dollar in thousands) Service Cost - Benefits Earned During the Period $ 339 $ 399 $ 710 Interest Cost of Projected Benefit Obligation 1,351 1,347 1,466 Expected Return on Plan Assets (1,702 ) (1,853 ) (2,137 ) Recognized Net Actuarial Loss 153 230 566 Amortization of Prior-Service Cost 19 61 269 Settlement — — 649 Net Periodic Pension Cost $ 160 $ 184 $ 1,523
Schedule of Expected Benefit Payments	Expected benefit payments over the next five years, and the following five years under the pension plans are expected to be as follows (dollars in thousands): Fiscal Years Total 2021 $ 1,586 2022 $ 1,673 2023 $ 1,721 2024 $ 1,765 2025 $ 1,892 2026-2030 $ 10,197
Schedule of Assumptions Used in Net Periodic Benefit Cost and Benefit Obligations	The following tables set forth the assumptions used in the actuarial calculations of the present value of Net Periodic Benefit Costs and Benefit Obligations: March 31, 2020 2019 2018 Net Periodic Benefit Costs - Discount Rate 4.09 % 4.12 % 4.03 % Expected Return on Plan Assets 4.75 % 5.50 % 7.50 % Rate of Compensation Increase 3.50 % 3.50 % 3.50 % March 31, 2020 2019 Benefit Obligations - Discount Rate 3.64 % 4.09 % Rate of Compensation Increase 3.50 % 3.50 %
Schedule of Pension Plans Weighted-Average Asset Allocation and Range of Target Allocation	The pension plans’ approximate weighted-average asset allocation at March 31, Percentage of Plan Assets at March 31, Range of Target Allocation 2020 2019 Asset Category - Equity Securities 10 – 20% 9 % 14 % Debt Securities 60 – 90% 89 % 85 % Other 0 – 20% 2 % 1 % Total 100 % 100 %
Schedule of Fair Values of Defined Benefit Plans	The fair values of our defined benefit plans’ consolidated assets by category as of March 31, March 31, 2020 2019 (dollars in thousands) Equity Securities $ 3,470 $ 4,525 Fixed Income Securities 34,579 31,516 Real Estate Funds 107 144 Commodity Linked Funds — 212 Cash Equivalents 853 144 Total $ 39,009 $ 36,541
Schedule of Fair Values of Defined Benefit Plans Determined Using Fair Value Hierarchy of Inputs	The fair values by category of inputs as of March 31, Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Asset Categories (dollars in thousands) Equity Securities $ — $ 3,470 $ — $ 3,470 Fixed Income Securities — 34,579 — 34,579 Real Estate Funds — 107 — 107 Cash Equivalents 853 — — 853 $ 853 $ 38,156 $ — $ 39,009 The fair values by category of inputs as of March 31, 2019 were as follows: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Asset Categories (dollars in thousands) Equity Securities $ — $ 4,525 $ — $ 4,525 Fixed Income Securities — 31,516 — 31,516 Real Estate Funds — 144 — 144 Commodity Linked Funds — 212 — 212 Cash Equivalents 144 — — 144 $ 144 $ 36,397 $ — $ 36,541

FINANCIAL STATEMENTS FOR GUAR_2

FINANCIAL STATEMENTS FOR GUARANTORS OF THE 4.500% SENIOR UNSECURED NOTES (Tables)	12 Months Ended
	Mar. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Condensed Consolidating Statement of Earnings and Comprehensive Earnings	Condensed Consolidating Statement of Earnings and Comprehensive Earnings For the Year Ended March 31, 2020 Parent Guarantor Subsidiaries Eliminations Consolidated Revenue $ — $ 1,450,814 $ — $ 1,450,814 Cost of Goods Sold — 1,119,552 — 1,119,552 Gross Profit — 331,262 — 331,262 Equity in Earnings of Unconsolidated Joint Venture 42,585 42,585 (42,585 ) 42,585 Equity in Earnings of Subsidiaries 100,225 — (100,225 ) — Corporate General and Administrative Expenses (56,695 ) (8,715 ) — (65,410 ) Impairment Losses — (224,267 ) — (224,267 ) Other Non-Operating Income (Loss) (697 ) 672 — (25 ) Interest Expense, net (38,372 ) (49 ) — (38,421 ) Earnings before Income Taxes 47,046 141,488 (142,810 ) 45,724 Income Taxes 23,848 1,322 — 25,170 Net Earnings $ 70,894 $ 142,810 $ (142,810 ) $ 70,894 Net Earnings $ 70,894 $ 142,810 $ (142,810 ) $ 70,894 Net Actuarial Change in Benefit Plans, net of tax (265 ) (265 ) 265 (265 ) Comprehensive Earnings $ 70,629 $ 142,545 $ (142,545 ) $ 70,629 Condensed Consolidating Statement of Earnings and Comprehensive Earnings For the Year Ended March 31, 2019 Parent Guarantor Subsidiaries Eliminations Consolidated Revenue $ — $ 1,393,241 $ — $ 1,393,241 Cost of Goods Sold — 1,066,673 — 1,066,673 Gross Profit — 326,568 — 326,568 Equity in Earnings of Unconsolidated Joint Venture 38,565 38,565 (38,565 ) 38,565 Equity in Earnings of Subsidiaries 77,954 — (77,954 ) — Corporate General and Administrative Expenses (31,744 ) (5,627 ) — (37,371 ) Impairment Losses — (220,265 ) — (220,265 ) Legal Settlements — (1,800 ) — (1,800 ) Other Non-Operating Income (390 ) 2,802 — 2,412 Interest Expense, net (28,325 ) (49 ) — (28,374 ) Earnings before Income Taxes 56,060 140,194 (116,519 ) 79,735 Income Taxes 12,800 (23,675 ) — (10,875 ) Net Earnings $ 68,860 $ 116,519 $ (116,519 ) $ 68,860 Net Earnings $ 68,860 $ 116,519 $ (116,519 ) $ 68,860 Net Actuarial Change in Benefit Plans, net of tax 696 696 (696 ) 696 Comprehensive Earnings $ 69,556 $ 117,215 $ (117,215 ) $ 69,556 Condensed Consolidating Statement of Earnings and Comprehensive Earnings For the Year Ended March 31, 2018 Parent Guarantor Subsidiaries Eliminations Consolidated Revenue — $ 1,386,520 $ — $ 1,386,520 Cost of Goods Sold — 1,047,764 — 1,047,764 Gross Profit — 338,756 — 338,756 Equity in Earnings of Unconsolidated Joint Venture 43,419 43,419 (43,419 ) 43,419 Equity in Earnings of Subsidiaries 289,950 — (289,950 ) — Corporate General and Administrative Expenses (37,825 ) (3,380 ) — (41,205 ) Legal Settlements (45,098 ) — — (45,098 ) Other Non-Operating Income (233 ) 3,961 — 3,728 Interest Expense, net (27,609 ) (29 ) — (27,638 ) Earnings before Income Taxes 222,604 382,727 (333,369 ) 271,962 Income Taxes 34,028 (49,358 ) — (15,330 ) Net Earnings $ 256,632 $ 333,369 $ (333,369 ) $ 256,632 Net Earnings $ 256,632 $ 333,369 $ (333,369 ) 256,632 Net Actuarial Change in Benefit Plans, net of tax 3,384 3,384 (3,384 ) 3,384 Comprehensive Earnings $ 260,016 $ 336,753 $ (336,753 ) $ 260,016
Condensed Consolidating Balance Sheet	Condensed Consolidating Balance Sheet At March 31, 2020 Parent Guarantor Subsidiaries Eliminations Consolidated ASSETS Current Assets - Cash and Cash Equivalents $ 116,269 $ 2,379 $ — 118,648 Accounts and Notes Receivable 531 151,255 — 151,786 Inventories — 272,508 — 272,508 Income Tax Receivable 128,413 — — 128,413 Prepaid and Other Current Assets 953 5,909 — 6,862 Total Current Assets 246,166 432,051 — 678,217 Property, Plant and Equipment, net 6,606 1,755,503 — 1,762,109 Notes Receivable — 9,139 — 9,139 Investment in Joint Venture 70 73,888 — 73,958 Operating Lease Right-of-Use Assets 9,765 20,765 — 30,530 Investments in Subsidiaries and Receivables from Affiliates 2,489,326 179,398 (2,668,724 ) — Deferred Tax Assets 11,409 — (11,409 ) — Goodwill and Intangible Assets, net — 396,463 — 396,463 Other Assets 4,417 6,187 — 10,604 $ 2,767,759 $ 2,873,394 $ (2,680,133 ) $ 2,961,020 LIABILITIES AND STOCKHOLDERS’ EQUITY Current Liabilities- Accounts Payable $ 6,365 $ 79,832 $ — $ 86,197 Accrued Liabilities 33,409 39,884 — 73,293 Operating Lease Liabilities 1,180 9,027 — 10,207 Total Current Liabilities 40,954 128,743 — 169,697 Long-term Debt 1,567,315 — — 1,567,315 Noncurrent Operating Lease Liabilities 12,249 37,560 — 49,809 Other Long-term Liabilities — 39,689 — 39,689 Payables to Affiliates 179,398 6,324,504 (6,503,902 ) — Deferred Income Taxes — 178,076 (11,409 ) 166,667 Total Liabilities 1,799,916 6,708,572 (6,515,311 ) 1,993,177 Total Stockholders’ Equity 967,843 (3,835,178 ) 3,835,178 967,843 $ 2,767,759 $ 2,873,394 $ (2,680,133 ) $ 2,961,020 Condensed Consolidating Balance Sheet At March 31, 2019 Parent Guarantor Subsidiaries Eliminations Consolidated ASSETS Current Assets - Cash and Cash Equivalents $ 5,779 $ 2,822 $ — $ 8,601 Accounts and Notes Receivable 437 128,285 — 128,722 Inventories — 275,194 — 275,194 Income Tax Receivable 5,480 — — 5,480 Prepaid and Other Current Assets 1,472 8,152 — 9,624 Total Current Assets 13,168 414,453 — 427,621 Property, Plant and Equipment, net 7,756 1,419,183 — 1,426,939 Notes Receivable — 2,898 — 2,898 Investment in Joint Venture 70 64,803 — 64,873 Investments in Subsidiaries and Receivables from Affiliates 2,322,335 406,726 (2,729,061 ) — Goodwill and Intangible Assets, net — 229,115 — 229,115 Other Assets 4,571 13,146 — 17,717 $ 2,347,900 $ 2,550,324 $ (2,729,061 ) $ 2,169,163 LIABILITIES AND STOCKHOLDERS’ EQUITY Current Liabilities- Accounts Payable $ 5,520 $ 75,364 $ — $ 80,884 Accrued Liabilities 22,470 39,479 — 61,949 Current Portion of Long-term Debt 36,500 — — 36,500 Total Current Liabilities 64,490 114,843 — 179,333 Long-term Debt 655,092 — — 655,092 Other Long-term Liabilities 3,303 31,189 — 34,492 Payables to Affiliates 406,727 5,730,093 (6,136,820 ) — Deferred Income Taxes 8,801 81,958 — 90,759 Total Liabilities 1,138,413 5,958,083 (6,136,820 ) 959,676 Total Stockholders’ Equity 1,209,487 (3,407,759 ) 3,407,759 1,209,487 $ 2,347,900 $ 2,550,324 $ (2,729,061 ) $ 2,169,163
Condensed Consolidating Statement of Cash Flows	Condensed Consolidating Statement of Cash Flows For the Year Ended March 31, 2020 Parent Guarantor Subsidiaries Eliminations Consolidated CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities $ (181,476 ) $ 580,777 $ — $ 399,301 CASH FLOWS FROM INVESTING ACTIVITIES Additions to Property, Plant, and Equipment — (132,119 ) — (132,119 ) Investment in Subsidiaries (699,361 ) — 699,361 — Acquisition Spending — (699,361 ) — (699,361 ) Proceeds from Sales of Property, Plant, and Equipment 400 — — 400 Net Cash Used in Investing Activities (698,961 ) (831,480 ) 699,361.00 (831,080 ) CASH FLOWS FROM FINANCING ACTIVITIES Increase in Revolving Credit Facility 250,000 — — 250,000 Repayment of Private Placement Senior Unsecured Notes (36,500 ) — — (36,500 ) Issuance of Term Loan 665,000 — — 665,000 Dividends Paid to Stockholders (17,142 ) — — (17,142 ) Purchase and Retirement of Common Stock (313,887 ) — — (313,887 ) Proceeds from Stock Option Exercises 3,298 — — 3,298 Shares Redeemed to Settle Employee Taxes on Stock Compensation (4,063 ) — — (4,063 ) Payment of Debt Issuance Costs (4,880 ) — — (4,880 ) Intra-entity Activity, net 449,101 250,260 (699,361 ) — Net Cash Provided by (Used in) Financing Activities 990,927 250,260 (699,361 ) 541,826 NET INCREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH 110,490 (443 ) — 110,047 CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD 5,779 2,822 — 8,601 CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD $ 116,269 $ 2,379 $ — $ 118,648 Condensed Consolidating Statement of Cash Flows For the Year Ended March 31, 2019 Parent Guarantor Subsidiaries Eliminations Consolidated CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities $ 33,997 $ 316,287 $ — $ 350,284 CASH FLOWS FROM INVESTING ACTIVITIES Additions to Property, Plant, and Equipment (6,107 ) (162,766 ) — (168,873 ) Proceeds from Sales of Property, Plant, and Equipment — 2,281 — 2,281 Net Cash Used in Investing Activities (6,107 ) (160,485 ) — (166,592 ) CASH FLOWS FROM FINANCING ACTIVITIES Increase in Revolving Credit Facility 70,000 — — 70,000 Dividends Paid to Stockholders (18,927 ) — — (18,927 ) Purchase and Retirement of Common Stock (271,988 ) — — (271,988 ) Proceeds from Stock Option Exercises 2,103 — — 2,103 Shares Redeemed to Settle Employee Taxes on Stock Compensation (4,347 ) — — (4,347 ) Intra-entity Activity, net 156,511 (156,511 ) — — Net Cash Provided by (Used in) Financing Activities (66,648 ) (156,511 ) — (223,159 ) NET INCREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH (38,758 ) (709 ) — (39,467 ) CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD 44,537 3,531 — 48,068 CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD $ 5,779 $ 2,822 $ — $ 8,601 Condensed Consolidating Statement of Cash Flows For the Year Ended March 31, 2018 Parent Guarantor Subsidiaries Eliminations Consolidated CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities $ (83,947 ) $ 421,612 $ — $ 337,665 CASH FLOWS FROM INVESTING ACTIVITIES Additions to Property, Plant, and Equipment (142 ) (131,815 ) — (131,957 ) Investment in Subsidiaries (36,761 ) — 36,761 — Acquisition Spending — (36,761 ) — (36,761 ) Net Cash Used in Investing Activities (36,903 ) (168,576 ) 36,761 (168,718 ) CASH FLOWS FROM FINANCING ACTIVITIES Increase in Revolving Credit Facility 15,000 — — 15,000 Repayment of Private Placement Senior Unsecured Notes (81,214 ) — — (81,214 ) Dividends Paid to Stockholders (19,438 ) — — (19,438 ) Purchase and Retirement of Common Stock (61,078 ) — — (61,078 ) Proceeds from Stock Option Exercises 24,264 — — 24,264 Shares Redeemed to Settle Employee Taxes on Stock Compensation (4,974 ) — — (4,974 ) Intra-entity Activity, net 287,643 (250,882 ) (36,761 ) — Net Cash Provided by (Used in) Financing Activities 160,203 (250,882 ) (36,761 ) (127,440 ) NET INCREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH 39,353 2,154 — 41,507 CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD 5,184 1,377 — 6,561 CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD $ 44,537 $ 3,531 $ — $ 48,068

QUARTERLY RESULTS (UNAUDITED) (

QUARTERLY RESULTS (UNAUDITED) (Tables)	12 Months Ended
	Mar. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Results (unaudited)	For the Years Ended March 31, 2020 2019 (dollars in thousands, except per share data) First Quarter - Revenue $ 370,597 $ 393,756 Gross Profit 75,329 91,634 Earnings Before Income Taxes 54,861 85,021 Net Earnings 41,304 66,339 Diluted Earnings Per Share $ 0.94 $ 1.38 Second Quarter - Revenue $ 414,526 $ 381,499 Gross Profit 104,506 97,931 Earnings Before Income Taxes 94,210 91,793 Net Earnings 71,793 72,603 Diluted Earnings Per Share $ 1.72 $ 1.53 Third Quarter - Revenue $ 350,249 $ 333,285 Gross Profit 87,514 80,421 Earnings (Loss) Before Income Taxes (148,565 ) 74,518 Net Earnings (Loss) (114,632 ) 57,715 Diluted Earnings (Loss) Per Share $ (2.77 ) $ 1.24 Fourth Quarter - Revenue $ 315,442 $ 284,701 Gross Profit 63,913 56,582 Earnings (Loss) Before Income Taxes 45,218 (171,597 ) Net Earnings (Loss) 72,429 (127,797 ) Diluted Earnings (Loss) Per Share $ 1.74 $ (2.82 )

Significant Accounting Polici_4

Significant Accounting Policies - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Mar. 06, 2020	Apr. 18, 2019
Significant Accounting Policies [Line Items]
Allowance for doubtful accounts	$ 9,900	$ 12,400	$ 9,900
Notes receivable, total		9,800
Notes receivable, current		$ 700
Notes receivable interest rate		4.10%
Notes receivable, maturity description		Remaining unpaid amounts, plus accrued interest, mature in fiscal 2025 and 2026.
Depreciable assets		$ 109,500	118,200	$ 109,600
Basis of valuation		Property, Plant, and Equipment are stated at cost.
Depreciation method		straight-line basis over the estimated useful lives
Goodwill impairment more likely than not a likelihood as greater percentage of fair value of reportable unit exceeds its carrying value		50.00%
Intangible Assets, Amortization Expense		$ 2,500	4,300	$ 4,400
Amortization expense, expected, for fiscal year 2021		4,300
Amortization expense, expected, for fiscal year 2022		4,200
Amortization expense, expected, for fiscal year 2023		4,200
Amortization expense, expected, for fiscal year 2024		4,200
Amortization expense, expected, for fiscal year 2025		4,200
Net book value of long-lived assets	208,400		208,400
Impairment loss		216,777	211,264
Adjusted carrying value of impaired assets	72,700		$ 72,700
Liabilities related to capitalized operating leases and asset retirement obligation, net		$ 17,900
Number of additional shares authorized to be repurchased						10,000,000
Outstanding authorization shares						10,724,758
Repurchase of shares		3,574,109	3,309,670	627,722
Shares repurchased average price		$ 87.82	$ 82.18	$ 97.30
Stock repurchase remaining number of shares authorized to be repurchased		7,305,649
Cost of Goods Sold		$ 1,119,552	$ 1,066,673	$ 1,047,764
Accumulated other comprehensive loss	3,316	3,560	3,316
Net of income taxes for accumulated other comprehensive loss		1,100
Maintenance and repair expenses		$ 127,000	$ 116,300	$ 107,300
Stock options excluded from computation of diluted earnings per share		475,082	461,575	98,362
Stock options, average exercise price per share		$ 95.46	$ 90.32	$ 98.75
Operating lease right-of-use asset		$ 30,530			$ 3,858
Operating lease liabilities		60,016
Accounting Standards Update 2016-02 [Member]
Significant Accounting Policies [Line Items]
Operating lease right-of-use asset		66,700
Operating lease liabilities		71,100
Freight [Member]
Significant Accounting Policies [Line Items]
Cost of Goods Sold		$ 168,100	$ 169,600	$ 158,300
Minimum [Member]
Significant Accounting Policies [Line Items]
Long-term supply agreements maturity year		2020
Revenue from contract with customer collection terms		30 days
Maximum [Member]
Significant Accounting Policies [Line Items]
Long-term supply agreements maturity year		2025
Revenue from contract with customer collection terms		65 days
Operating Facilities [Member]
Significant Accounting Policies [Line Items]
Impairment loss		$ 164,449	151,910
Utica, Illinois, Facility [Member] | Operating Facilities [Member]
Significant Accounting Policies [Line Items]
Net book value of long-lived assets	135,700		135,700
New Auburn, Wisconsin Facility [Member]
Significant Accounting Policies [Line Items]
Impairment loss			174,100
Corpus Christi, Texas Facility [Member]
Significant Accounting Policies [Line Items]
Impairment loss			37,200
Oil and Gas Proppants [Member]
Significant Accounting Policies [Line Items]
Impairment losses to property, plant, and equipment		$ 187,600	$ 211,300
Goodwill, impairment loss	$ 6,800
Oil and Gas Proppants [Member] | Discount Rate [Member] | Discounted Cash Flow Model [Member]
Significant Accounting Policies [Line Items]
Estimated discount rate for goodwill impairment	11.00%		11.00%

Schedule of Inventories (Detail

Schedule of Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Inventory [Line Items]
Inventories	$ 272,508	$ 275,194
Raw Materials and Material-in-Progress [Member]
Inventory [Line Items]
Inventories	110,558	125,828
Finished Cement [Member]
Inventory [Line Items]
Inventories	43,538	27,826
Aggregates [Member]
Inventory [Line Items]
Inventories	8,416	7,351
Gypsum Wallboard [Member]
Inventory [Line Items]
Inventories	4,211	7,124
Paperboard [Member]
Inventory [Line Items]
Inventories	5,715	15,660
Frac Sand [Member]
Inventory [Line Items]
Inventories	386	2,557
Repair Parts and Supplies [Member]
Inventory [Line Items]
Inventories	88,095	80,676
Fuel and Coal [Member]
Inventory [Line Items]
Inventories	$ 11,589	$ 8,172

Schedule of Property, Plant and

Schedule of Property, Plant and Equipment Estimated Useful Lives (Detail)	12 Months Ended
	Mar. 31, 2020
Minimum [Member] | Plants [Member]
Property, Plant and Equipment [Line Items]
Estimated lives of assets - (years)	20 years
Minimum [Member] | Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated lives of assets - (years)	20 years
Minimum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated lives of assets - (years)	3 years
Maximum [Member] | Plants [Member]
Property, Plant and Equipment [Line Items]
Estimated lives of assets - (years)	30 years
Maximum [Member] | Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated lives of assets - (years)	40 years
Maximum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated lives of assets - (years)	25 years

Schedule of Intangible Assets,

Schedule of Intangible Assets, Including Impact of Impairment Charges (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 06, 2020
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Accumulated Amortization	$ (72,849)	$ (72,477)
Goodwill, Cost	198,371	205,211
Goodwill, Additions	133,221
Goodwill, Net	331,592	198,370	$ 131,582
Total Goodwill and Intangible Assets, Cost	299,271	308,611
Goodwill and Intangible Assets, Additions	170,041
Goodwill and Intangible Assets, net	396,463	229,115
Intangible Assets, Impairment		(6,841)
Goodwill, Net	$ 331,592	198,370	$ 131,582
Goodwill and Intangible Assets, Impairment		$ (7,019)
Customer Contracts And Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Useful Life	15 years	15 years
Intangible Assets, Cost	$ 72,260	$ 72,260
Intangible Assets, Additions	33,550
Intangible Assets, Accumulated Amortization	(62,950)	(61,009)
Intangible Assets, Net	42,860	11,073
Intangible Assets, Impairment		$ (178)
Permits [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Useful Life		40 years
Intangible Assets, Cost	28,640	$ 28,640
Intangible Assets, Additions	1,770
Intangible Assets, Accumulated Amortization	(9,889)	(8,968)
Intangible Assets, Net	$ 20,521	$ 19,672
Permits [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Useful Life	25 years
Permits [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Useful Life	40 years
Trade Name [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Useful Life	15 years
Intangible Assets, Additions	$ 1,500
Intangible Assets, Accumulated Amortization	(10)
Intangible Assets, Net	$ 1,490
Sales Contracts [Member]
Finite Lived Intangible Assets [Line Items]
Intangible Assets, Useful Life		4 years
Intangible Assets, Cost		$ 2,500
Intangible Assets, Accumulated Amortization		$ (2,500)

Summary of Impact of Impairment

Summary of Impact of Impairment on Net Book Value of Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net Book Value Before Impairment	$ 227,839	$ 419,678
Impairment	(216,777)	(211,264)
Net Book Value After Impairment	11,062	208,414
Operating Facilities [Member]
Net Book Value Before Impairment	170,324	331,520
Impairment	(164,449)	(151,910)
Net Book Value After Impairment	5,875	179,610
Transload Locations [Member]
Net Book Value Before Impairment	23,264	86,741
Impairment	(21,815)	(59,354)
Net Book Value After Impairment	1,449	27,387
Real Estate [Member]
Net Book Value Before Impairment	1,417	1,417
Impairment	(1,367)
Net Book Value After Impairment	50	$ 1,417
Lease Right-of-Use Assets [Member]
Net Book Value Before Impairment	32,834
Impairment	(29,146)
Net Book Value After Impairment	$ 3,688

Summary of Impairment Losses Re

Summary of Impairment Losses Recognized (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Impairment Losses	$ 224,267	$ 220,265
Property, Equipment, and Real Estate [Member]
Impairment Losses	187,631	211,264
Goodwill [Member]
Impairment Losses		6,841
Inventories [Member]
Impairment Losses	6,256	1,982
Intangible Assets [Member]
Impairment Losses		$ 178
Lease Right-of-Use Assets [Member]
Impairment Losses	29,146
Accounts and Notes Receivable [Member]
Impairment Losses	617
Prepaid and Other Assets [Member]
Impairment Losses	$ 617

Supplemental Cash Flow Informat

Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Cash Payments:
Interest	$ 37,610	$ 28,191	$ 28,869
Income Taxes	20,046	$ 39,974	$ 69,481
Operating Cash Flows used for Operating Leases	14,926
Non-Cash Financing Activities:
Right-of-use Assets Obtained for Capitalized Operating Lease Liabilities	$ 621

Schedule of Total Selling, Gene

Schedule of Total Selling, General and Administrative Expenses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Accounting Policies [Abstract]
Operating Units Selling, G&A	$ 57,077	$ 53,787	$ 62,529
Corporate G&A	65,410	37,371	41,205
Total selling, general and administrative expenses	$ 122,487	$ 91,158	$ 103,734

Schedule of Earnings Per Share

Schedule of Earnings Per Share (Detail) - shares	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Weighted-Average Shares of Common Stock Outstanding	42,021,892	46,620,894	48,141,226
Assumed Exercise of Outstanding Dilutive Options	623,779	539,135	1,013,764
Less Shares Repurchased from Proceeds of Assumed Exercised Options	(481,853)	(374,380)	(727,904)
Restricted Stock Units	121,525	146,731	218,900
Weighted-Average Common Stock and Dilutive Securities Outstanding	42,285,343	46,932,380	48,645,986

Acquisition - Additional Inform

Acquisition - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 06, 2020	Aug. 02, 2019	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Business Acquisition [Line Items]
Purcahse price of acquisition			$ 699,361		$ 36,761
Inventories	$ 28,413
Income tax expense (benefit)			(25,170)	$ 10,875	$ 15,330
Kosmos Acquisition [Member]
Business Acquisition [Line Items]
Date of acquisition of business	Mar. 6, 2020
Purcahse price of acquisition	$ 668,900
Depreciation and amortization			1,800
Inventories			1,700
Nonrecurring charges			5,600
Income tax expense (benefit)			$ 31,700
ConAgg Acquisition [Member]
Business Acquisition [Line Items]
Date of acquisition of business		Aug. 2, 2019
Purcahse price of acquisition		$ 30,400
Inventories		$ 1,921

Preliminary Fair Values of the

Preliminary Fair Values of the Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 06, 2020	Mar. 31, 2019
Business Combinations [Abstract]
Inventories		$ 28,413
Property, Plant, and Equipment		477,442
Intangible Assets		35,500
Lease Right-of-Use Assets	$ 30,530	3,858
Lease Obligations	(49,809)	(3,858)
Long-term Liabilities		(4,000)
Total Net Assets		537,355
Goodwill	$ 331,592	131,582	$ 198,370
Total Estimated Purchase Price		$ 668,937

Summary of the Fair Value Estim

Summary of the Fair Value Estimates of the Identifiable Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Permits [Member]
Business Acquisition [Line Items]
Intangible Assets, Useful Life		40 years
Kosmos Acquisition [Member] | Estimated Fair Value [Member]
Business Acquisition [Line Items]
Estimated Fair Value	$ 35,500
Kosmos Acquisition [Member] | Permits [Member]
Business Acquisition [Line Items]
Intangible Assets, Useful Life	20 years
Kosmos Acquisition [Member] | Permits [Member] | Estimated Fair Value [Member]
Business Acquisition [Line Items]
Estimated Fair Value	$ 1,500
Kosmos Acquisition [Member] | Customer Relationships [member]
Business Acquisition [Line Items]
Intangible Assets, Useful Life	15 years
Kosmos Acquisition [Member] | Customer Relationships [member] | Estimated Fair Value [Member]
Business Acquisition [Line Items]
Estimated Fair Value	$ 32,500
Kosmos Acquisition [Member] | Trade Name and Technology [member]
Business Acquisition [Line Items]
Intangible Assets, Useful Life	10 years
Kosmos Acquisition [Member] | Trade Name and Technology [member] | Estimated Fair Value [Member]
Business Acquisition [Line Items]
Estimated Fair Value	$ 1,500

Actual and Pro Forma Impact on

Actual and Pro Forma Impact on Net Sales and Operating Loss (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Business Acquisition [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
Operating Income (Loss)									373,847	$ 365,133	$ 382,175
Kosmos Acquisition [Member] | Pro Forma [Member]
Business Acquisition [Line Items]
Revenue									7,880
Operating Income (Loss)									$ (6,756)

Unaudited Pro Forma Results (De

Unaudited Pro Forma Results (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Business Combinations [Abstract]
Revenue	$ 1,605,123	$ 1,554,337
Net Income	$ 50,189	$ 66,377
Earnings per share – basic	$ 1.19	$ 1.42
Earnings per share - diluted	$ 1.19	$ 1.41

Fair Values of the Assets Acqui

Fair Values of the Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 06, 2020	Aug. 02, 2019	Mar. 31, 2019
Business Acquisition [Line Items]
Inventories		$ 28,413
Property, Plant, and Equipment		477,442
Intangible Assets		35,500
Total Net Assets		537,355
Goodwill	$ 331,592	131,582		$ 198,370
Total Estimated Purchase Price		$ 668,937
ConAgg Acquisition [Member]
Business Acquisition [Line Items]
Accounts Receivable			$ 6,302
Inventories			1,921
Property, Plant, and Equipment			22,620
Intangible Assets			1,320
Lease Right-of-Use Assets			3,263
Other Assets			10
Lease Obligations			(3,263)
Accounts Payable and Accrued Expenses			(3,388)
Total Net Assets			28,785
Goodwill			1,639
Total Estimated Purchase Price			$ 30,424

Subsequent Event - Additional I

Subsequent Event - Additional Information (Detail) - USD ($) $ in Thousands	Apr. 17, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Subsequent Event [Line Items]
Assets		$ 2,961,020				$ 2,169,163				$ 2,961,020	$ 2,169,163	$ 2,368,003
Liabilities		1,993,177				959,676				1,993,177	959,676
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
Mathews Readymix LLC and Western Aggregates LLC [Member]
Subsequent Event [Line Items]
Assets		43,700								43,700
Liabilities		$ 2,300								2,300
Revenue										$ 32,300	$ 27,800	$ 27,700
Mathews Readymix LLC and Western Aggregates LLC [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Purcahse price of acquisition	$ 93,500

Schedule of Property, Plant a_2

Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 3,200,652	$ 2,691,649
Accumulated Depreciation	(1,438,543)	(1,264,710)
Property, Plant and Equipment, Net	1,762,109	1,426,939
Land And Quarries [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	431,242	379,337
Plants [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	2,483,246	2,006,870
Buildings Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	255,758	219,556
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 30,406	$ 85,886

Schedule of Accrued Expenses (D

Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Accounts Payable And Accrued Liabilities Current [Abstract]
Payroll and Incentive Compensation	$ 25,584	$ 26,225
Benefits	12,521	12,673
Interest	4,080	3,852
Property Taxes	6,676	5,058
Power and Fuel	1,353	1,644
Litigation Settlements and Expenses		1,900
Legal and Professional	16,096
Sales and Use Tax	1,085	2,167
Other	5,898	8,430
Accrued Expenses, Total	$ 73,293	$ 61,949

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2019	Mar. 31, 2020
Oil and Gas Proppants [Member]
Lessee Lease Description [Line Items]
Impairment related to right of use assets	$ 29.1
Minimum [Member]
Lessee Lease Description [Line Items]
Operating lease term		1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Operating lease term		20 years

Schedule of Lease Expense for O

Schedule of Lease Expense for Operating and Short-Term Leases (Detail) $ in Thousands	12 Months Ended
	Mar. 31, 2020USD ($)
Leases [Abstract]
Operating Lease Cost	$ 13,315
Short-term Lease Cost	1,470
Total Lease Cost	$ 14,785

Schedule of Balance Sheet Infor

Schedule of Balance Sheet Information Related to Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 06, 2020
Operating Leases:
Operating Lease Right-of-Use Assets	$ 30,530	$ 3,858
Current Operating Lease Liabilities	10,207
Noncurrent Operating Lease Liabilities	49,809	$ 3,858
Total Operating Lease Liabilities	$ 60,016

Schedule of Future Payments for

Schedule of Future Payments for Operating Leases (Detail) $ in Thousands	Mar. 31, 2020USD ($)
Leases [Abstract]
2021	$ 12,036
2022	10,781
2023	10,067
2024	8,222
2025	6,884
Thereafter	24,624
Total Lease Payments	72,614
Less: Imputed Interest	(12,598)
Present Value of Lease Liabilities	$ 60,016
Weighted Average Remaining Lease Term (in years)	9 years 2 months 12 days
Weighted Average Discount Rate	3.78%

Long-Term Debt (Detail)

Long-Term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019	Aug. 02, 2016
Debt Instrument [Line Items]
Total Debt	$ 1,575,000	$ 696,500
Less: Current Portion of Long-term Debt		(36,500)
Less: Debt Origination Costs	(7,685)	(4,908)
Long-term Debt	1,567,315	655,092
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total Debt	560,000	310,000
4.500% Senior Unsecured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Total Debt	350,000	350,000	$ 350,000
Term Loan [Member]
Debt Instrument [Line Items]
Total Debt	$ 665,000
Private Placement Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Total Debt		$ 36,500

Long-Term Debt (Parenthetical)

Long-Term Debt (Parenthetical) (Detail) - 4.500% Senior Unsecured Notes Due 2026 [Member]	12 Months Ended
	Mar. 31, 2020	Aug. 02, 2016
Debt Instrument [Line Items]
Debt instrument, interest rate	4.50%	4.50%
Debt instrument, maturity year	2026

Indebtedness - Additional Infor

Indebtedness - Additional Information (Detail) - USD ($)	Apr. 09, 2020	Dec. 20, 2019	Oct. 02, 2019	Aug. 02, 2016	Oct. 31, 2014	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2019
Debt Instrument [Line Items]
Credit Facility, borrowings available									$ 183,500,000
Supplementary leverage ratio					450.00%
Interest coverage ratio					250.00%
Borrowings outstanding under Credit Facility									560,000,000
Letter of Credit Facility						$ 40,000,000
Outstanding letters of credit , amount						6,500,000			$ 6,500,000
Debt instrument, principal amount						1,575,000,000	$ 696,500,000
Repayments of Debt						$ 36,500,000		$ 81,214,000
NYFRB [Member]
Debt Instrument [Line Items]
Variable margin					1.00%
Maximum [Member] | Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Unused line of credit commitment fee based on leverage ratio					0.30%
Maximum [Member] | Maturity Period 2022 [Member]
Debt Instrument [Line Items]
Unused line of credit commitment fee based on leverage ratio					0.40%
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Variable margin					2.00%
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maturity Period 2022 [Member]
Debt Instrument [Line Items]
Variable margin					2.50%
Maximum [Member] | NYFRB [Member]
Debt Instrument [Line Items]
Consolidated Funded Indebtedness Ratio		2.50%
Maximum [Member] | NYFRB [Member] | Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Variable margin					1.00%
Maximum [Member] | NYFRB [Member] | Maturity Period 2022 [Member]
Debt Instrument [Line Items]
Variable margin					1.50%
Minimum [Member] | Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Unused line of credit commitment fee based on leverage ratio					0.15%
Minimum [Member] | Maturity Period 2022 [Member]
Debt Instrument [Line Items]
Unused line of credit commitment fee based on leverage ratio					0.20%
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Variable margin					1.25%
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maturity Period 2022 [Member]
Debt Instrument [Line Items]
Variable margin					1.50%
Minimum [Member] | NYFRB [Member]
Debt Instrument [Line Items]
Consolidated Funded Indebtedness Ratio		1.50%
Minimum [Member] | NYFRB [Member] | Maturity Period 2021 [Member]
Debt Instrument [Line Items]
Variable margin					0.25%
Minimum [Member] | NYFRB [Member] | Maturity Period 2022 [Member]
Debt Instrument [Line Items]
Variable margin					0.50%
Term Loan [Member]
Debt Instrument [Line Items]
Weighted-average interest rate						2.80%
Interest rate of debt instrument						2.80%
Debt instrument, principal amount						$ 665,000,000
Term Loan Agreement [Member]
Debt Instrument [Line Items]
Credit facility, interest rate description						Borrowings under the Term Loan Agreement bear interest, at our option, at a variable rate equal to either (i) the Alternate Base Rate (as defined in the Term Loan Agreement and consistent with the Revolving Credit Facility), plus an agreed spread (ranging from 50 to 150 basis points), or (ii) the Adjusted LIBO Rate (as defined in the Term Loan Agreement) plus an agreed spread (ranging from 150 to 250 basis points), which is established quarterly based on the Company's then Leverage Ratio (as defined in the Term Loan Agreement and consistent with the Revolving Credit Facility). The Company must also maintain a Leverage Ratio and Interest Coverage Ratio consistent with the Revolving Credit Facility.
Term loan facility, unused borrowing capacity, Amount						$ 665,000
Term loan Maturity Date						Aug. 2, 2022
Term Loan Agreement [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Variable margin		1.50%
Term Loan Agreement [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Variable margin		0.50%
4.500% Senior Unsecured Notes Due 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount				$ 350,000,000		$ 350,000,000	350,000,000
Debt instrument, interest rate				4.50%		4.50%
Debt instrument, maturity period				2026-08
4.500% Senior Unsecured Notes Due 2026 [Member] | On or After August 1, 2019 and Prior to August 1, 2021 [Member]
Debt Instrument [Line Items]
Redemption price, percentage				100.00%
Private Placement Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Debt instrument, principal amount							$ 36,500,000
Repayments of Debt			$ 36,500,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Weighted-average interest rate						3.60%	3.40%	2.60%
Interest rate of debt instrument						2.80%	3.80%
Credit Facility, principal balance						$ 500,000,000
Credit Facility, borrowings available						750,000,000
Credit Facility, available at the end						$ 665,000,000
Credit Facility, termination date							Aug. 2, 2022
Credit facility, interest rate description						At the Company’s option, principal amounts outstanding under the Revolving Credit Facility bear interest at a variable rate equal to either (i) the Adjusted LIBO Rate (as defined in the Revolving Credit Facility) plus an agreed spread (ranging from 125 to 200 basis points for loans scheduled to mature in 2021 and from 150 to 250 basis points for loans scheduled to mature in 2022), which is established quarterly based on the Company's then Leverage Ratio; or (ii) an Alternate Base Rate (as defined in the Revolving Credit Facility), which is the highest of (a) the Prime Rate (as defined in the Revolving Credit Facility), (b) the NYFRB (as defined in the Revolving Credit Facility) plus ½ of 1%, and (c) the Adjusted LIBO Rate for a one-month interest period on such day, plus 1.0%, in each case plus an agreed upon spread (ranging from 25 to 100 basis points for loans scheduled to mature in 2021 and from 50 to 150 basis points for loans scheduled to mature in 2022) which is established quarterly based on the Company's then Leverage Ratio.
Debt instrument, principal amount						$ 560,000,000	$ 310,000,000
Revolving Credit Facility [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Credit facility, interest rate description	we further amended the Revolving Credit Facility to, among other things, (i) extend the maturity date with respect to certain lender commitments thereunder from August 2, 2021 to August 2, 2022, (ii) modify the financial covenants to increase the maximum leverage that the Company (on a consolidated basis) is required to maintain, (iii) increase the pricing of borrowings based on the then-existing Leverage Ratio (as defined in the Revolving Credit Facility) which is based on the ratio of the Company’s Consolidated Total Indebtedness (as defined in the Revolving Credit Facility) to Consolidated EBITDA (as defined in the Revolving Credit Facility), and (iv) further restrict the Company and its Restricted Subsidiaries (as defined in the Revolving Credit Facility) from making Restricted Payments (as defined in the Revolving Credit Facility) with certain exceptions, including, among others, no Default (as defined in the Revolving Credit Facility) has occurred and is continuing and based on a pro forma basis after giving effect to any such Restricted Payment the Leverage Ratio would not be greater than 2.50 to 1.00
Revolving Credit Facility [Member] | Subsequent Event [Member] | Maximum [Member]
Debt Instrument [Line Items]
Supplementary leverage ratio	250.00%
Revolving Credit Facility [Member] | Swingline Loan [Member]
Debt Instrument [Line Items]
Credit Facility, principal balance						$ 25,000,000
Line of Credit [Member] | NYFRB [Member]
Debt Instrument [Line Items]
Variable margin					0.50%
Letter of Credit [Member]
Debt Instrument [Line Items]
Unused line of credit commitment fee based on leverage ratio						0.125%

Schedule of Maturities of Long-

Schedule of Maturities of Long-Term Debt (Detail) $ in Thousands	Mar. 31, 2020USD ($)
Debt Disclosure [Abstract]
2023	$ 1,225,000
Thereafter	350,000
Total	$ 1,575,000

Schedule of Senior Unsecured No

Schedule of Senior Unsecured Notes Redemption Prices (Detail) - 4.500% Senior Unsecured Notes Due 2026 [Member]	12 Months Ended
	Mar. 31, 2020
2021 [Member]
Debt Instrument Redemption [Line Items]
Redemption price, percentage	102.25%
2022 [Member]
Debt Instrument Redemption [Line Items]
Redemption price, percentage	101.50%
2023 [Member]
Debt Instrument Redemption [Line Items]
Redemption price, percentage	100.75%
2024 and Thereafter [Member]
Debt Instrument Redemption [Line Items]
Redemption price, percentage	100.00%

Fair Value of Senior Notes (Det

Fair Value of Senior Notes (Detail) $ in Thousands	Mar. 31, 2020USD ($)
4.500% Senior Unsecured Notes Due 2026 [Member]
Fair Value Of Financial Instruments [Line Items]
Fair Value of long term debt	$ 320,560

Fair Value of Senior Notes (Par

Fair Value of Senior Notes (Parenthetical) (Detail) - 4.500% Senior Unsecured Notes Due 2026 [Member]	12 Months Ended
	Mar. 31, 2020	Aug. 02, 2016
Fair Value Of Financial Instruments [Line Items]
Debt instrument, interest rate	4.50%	4.50%
Debt instrument, maturity year	2026

Business Segments - Additional

Business Segments - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2020LocationFacilityTerminalPlantSectorSegment
Segment Reporting [Abstract]
Number of sectors | Sector	3
Number of reportable business segments | Segment	5
Cement plant locations | Location	8
Slag grinding facility | Facility	1
Cement distribution terminals | Terminal	29
Gypsum wallboard plants | Plant	5
Readymix concrete batch plants | Plant	26
Aggregates processing plants | Plant	5
Number of frac sand processing facilities | Facility	2
Number of frac sand drying facilities | Facility	4
Number of frac sand trans-load locations | Location	2
Proportionate consolidation of share of joint venture revenues and operating earnings	50.00%

Financial Information Related t

Financial Information Related to Operations by Segment (Detail) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Sep. 30, 2018USD ($)	Jun. 30, 2018USD ($)	Mar. 31, 2020USD ($)kT	Mar. 31, 2019USD ($)kT	Mar. 31, 2018USD ($)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

Segment Breakdown of Goodwill (

Segment Breakdown of Goodwill (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 06, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Goodwill	$ 331,592	$ 131,582	$ 198,370
Cement [Member]
Segment Reporting Information [Line Items]
Goodwill	205,797		74,214
Concrete and Aggregates [Member]
Segment Reporting Information [Line Items]
Goodwill	1,639
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

Schedule of Components of Provi

Schedule of Components of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Current Provision (Benefit) - Federal	$ (102,080)	$ 32,710	$ 58,695
Current Provision (Benefit) - State	923	6,536	5,989
Current Provision (Benefit) - Total	(101,157)	39,246	64,684
Deferred Provision (Benefit) - Federal	76,255	(21,039)	(52,333)
Deferred Provision (Benefit) - State	(268)	(7,332)	2,979
Deferred Provision (Benefit) - Total	75,987	(28,371)	(49,354)
Provision (Benefit) for Income Taxes	$ (25,170)	$ 10,875	$ 15,330

Schedule of Effective Tax Rates

Schedule of Effective Tax Rates Vary from Federal Statutory Rates (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
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
Income Taxes at Statutory Rate									9,602	16,744	85,804
Increases (Decreases) in Tax Resulting from - State Income Taxes, net									(1,703)	(629)	6,139
Increases (Decreases) in Tax Resulting from - Statutory Depletion in Excess of Cost									(3,078)	(3,834)	(6,341)
Increases (Decreases) in Tax Resulting from - Domestic Production Activities Deduction											(5,995)
Increases (Decreases) in Tax Resulting from - Excess Tax Benefit from Stock Compensation									307	(651)	(4,129)
Increases (Decreases) in Tax Resulting from - Meals and Entertainment Disallowance									537	610	567
Increases (Decreases) in Tax Resulting from - Limitation on Officer's Compensation									1,018	1,434	246
Increases (Decreases) in Tax Resulting from - Impact of Tax Cuts and Jobs Act of 2017											(61,692)
Increase (Decreases in Tax Resulting from -Impact of CARES Act of 2020									(35,936)
Increases (Decreases) in Tax Resulting from - Credits									(2,150)	(940)
Increases (Decreases) in Tax Resulting from - Valuation Allowance									2,212	(2,100)
Increases (Decreases) in Tax Resulting from - Unrecognized Tax Benefits									4,200
Increases (Decreases) in Tax Resulting from - Other									(179)	241	731
Provision (Benefit) for Income Taxes									$ (25,170)	$ 10,875	$ 15,330
Effective Tax Rate									(55.00%)	14.00%	6.00%

Schedule of Components of Defer

Schedule of Components of Deferred Income Taxes (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Items Giving Rise to Deferred Tax Liabilities - Excess Tax Depreciation and Amortization	$ (199,096)	$ (108,505)
Items Giving Rise to Deferred Tax Liabilities - State Income Taxes, net	(12,225)	(9,236)
Items Giving Rise to Deferred Tax Liabilities - Right of Use Asset	(5,441)
Items Giving Rise to Deferred Tax Liabilities - Other	(5,764)	(5,628)
Items Giving Rise to Deferred Tax Liabilities - Total Deferred Tax Liabilities	(222,526)	(123,369)
Items Giving Rise to Deferred Tax Assets - Change in Accruals	9,373	8,601
Items Giving Rise to Deferred Tax Assets - Depletable Assets	12,632	8,995
Items Giving Rise to Deferred Tax Assets - Inventory	7,217	6,046
Items Giving Rise to Deferred Tax Assets - Bad Debts	2,642	2,169
Items Giving Rise to Deferred Tax Assets - Long-term Incentive Compensation Plan	5,590	5,154
Items Giving Rise to Deferred Tax Assets - Credits and Other Carryforwards	19,861	12,289
Items Giving Rise to Deferred Tax Assets - Lease Liability	11,384
Items Giving Rise to Deferred Tax Assets - Pension	937	921
Items Giving Rise to Deferred Tax Assets - Subtotal	69,636	44,175
Items Giving Rise to Deferred Tax Assets - Valuation Allowance	(13,777)	(11,565)
Items Giving Rise to Deferred Tax Assets - Total Deferred Tax Assets	$ 55,859	$ 32,610

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Dec. 31, 2017	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Tax [Line Items]
Increased in valuation allowance against deferred tax assets		$ 2.2
Increase related to prior tax positions		4.2
Accrued interest on uncertain tax position		0	$ 0	$ 0
Accrued penalties on uncertain tax position		$ 0	0	$ 0
Federal corporate tax rate	35.00%	21.00%
Deductibility percentage of certain capital expenditures		100.00%
Tax benefit from change in corporate tax rates on deferred tax liabilities	$ 61.7
Income tax benefit carryback under CARES Act		$ 35.9
Net operating losses carryback term due to CARES Act		5 years
Income tax benefit partially offset created by CARES Act		$ 4.2
State Income Tax [Member]
Income Tax [Line Items]
Net operating loss carryforwards		5.4	1
State Income Tax [Member] | Research and Development (R&D) [Member]
Income Tax [Line Items]
Income tax credit		$ 2.2	$ 2
Tax credit carryforward term		20 years

Reconciliation of Consolidated

Reconciliation of Consolidated Liability for Gross Unrecognized Tax Benefits (Detail) $ in Thousands	12 Months Ended
	Mar. 31, 2020USD ($)
Income Tax Disclosure [Abstract]
Balance at Beginning of Year	$ 0
Increase related to current tax positions	4,200
Balance at End of Year	$ 4,200

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Letters of credit outstanding, amount	$ 6,500,000	$ 6,500,000
Contingently liable for performance, current	31,000,000
Outstanding guarantees	$ 0
Percentage of expected natural gas usage	25.00%

Stock Option Plans - Additional

Stock Option Plans - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Aug. 31, 2019	May 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Aug. 07, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant			3,755,871			3,000,000
Stock option expense			$ 4.5	$ 3.8	$ 4.3
Aggregate intrinsic value for outstanding options			3.8
Total intrinsic value of options exercised			2.2	2.1	18.7
Restricted stock or unit expense			$ 15.3	$ 11.3	$ 9.6
Stock Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant						1,500,000
Performance Vesting Stock Options [Member] | Long Term Compensation Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant		100,849
Percentage of average return on invested capital			16.40%
Reduced percentage of shares earned in stock options plan			66.70%
Shares earned			88,755
Stock based compensation plan, description			The performance criterion for the Fiscal 2019 Employee Performance Stock Option Grant is based upon the achievement of certain levels of return on equity (as defined in the option agreements), ranging from 10.0% to 20.0%, for the fiscal year ending March 31, 2020. All stock options are earned if the return on equity is 20.0% or greater, and the percentage of shares earned are reduced proportionately to approximately 66.7% if the return on equity is 10.0%. If the Company does not achieve a return on equity of at least 10.0%, all stock options granted will be forfeited. During fiscal 2020, the adjusted return on equity was approximately 16.4%; therefore, 88,755 options were earned, with the remaining options forfeited.
Share-based compensation vesting period		4 years
Share-based compensation award expiration term		10 years
Performance Vesting Stock Options [Member] | Long Term Compensation Plan [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of average return on invested capital		10.00%
Share-based compensation expiration date			Mar. 31, 2021
Performance Vesting Stock Options [Member] | Long Term Compensation Plan [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of average return on invested capital		20.00%
Share-based compensation expiration date			Mar. 31, 2023
Time Vesting Stock Options [Member] | Long Term Compensation Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant		84,043
Share-based compensation vesting period		4 years
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost, stock options			$ 7.2
Weighted-average period of recognition of unrecognized compensation cost			2 years 4 months 24 days
Stock Options [Member] | Long Term Compensation Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation award expiration term		10 years
Performance Vesting Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant		51,112
Percentage of average return on invested capital			16.40%
Shares earned			44,985
Stock based compensation plan, description			The performance criterion for the Fiscal 2020 Employee Restricted Stock Performance Award is based upon the achievement of certain levels of return on equity (as defined in the agreement), ranging from 10.0% to 20.0%, for the fiscal year ended March 31, 2020. All restricted shares will be earned if the return on equity is 20.0% or greater, and the percentage of shares earned will be reduced proportionately to approximately 66.7% if the return on equity is 10.0%. If the Company does not achieve a return on equity of at least 10.0%, all awards will be forfeited.
Share-based compensation vesting period		4 years
Reduced percentage of restricted shares			66.70%
Performance Vesting Restricted Stock [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of average return on invested capital		10.00%
Share-based compensation vesting date			Mar. 31, 2021
Performance Vesting Restricted Stock [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of average return on invested capital		20.00%
Share-based compensation vesting date			Mar. 31, 2023
Time Vesting Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant		42,591
Share-based compensation vesting period		4 years
Time Vesting Restricted Stock [Member] | Board of Director [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation vesting period		6 months
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant	24,589		233,000
Share-based compensation vesting period	6 months
Weighted-average period of recognition of unrecognized compensation cost			2 years 2 months 12 days
Unrecognized compensation cost			$ 15.4
Restricted Stock And Restricted Stock Unit [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future grant			1,219,192

Weighted-Average Assumptions Us

Weighted-Average Assumptions Used to Value Option Awards (Detail) - Long Term Compensation Plan [Member] - Stock Options [Member]	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend Yield	1.30%	1.30%
Expected Volatility	31.40%	32.70%
Risk Free Interest Rate	2.31%	2.85%
Expected Life	6 years	6 years

Stock Option Activity (Detail)

Stock Option Activity (Detail) - $ / shares	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of Shares, Outstanding Options at Beginning of Year	1,042,925	958,136	1,323,379
Number of Shares, Granted	187,375	125,734	119,986
Number of Shares, Exercised	(62,326)	(38,748)	(448,295)
Number of Shares, Cancelled	(7,883)	(2,197)	(36,934)
Number of Shares, Outstanding Options at End of Year	1,160,091	1,042,925	958,136
Number of Shares, Options Exercisable at End of Year	868,081	761,564	651,218
Weighted-Average Exercise Price, Outstanding Options at Beginning of Year	$ 76.88	$ 72.52	$ 66.07
Weighted-Average Exercise Price, Granted	91.58	103.53	100.20
Weighted-Average Exercise Price, Exercised	88.28	54.27	60.27
Weighted-Average Exercise Price, Cancelled	102.69	100.88	79.97
Weighted-Average Exercise Price, Outstanding Options at End of Year	80.36	76.88	72.52
Weighted-Average Fair Value of Options Granted during the Year	$ 27.35	$ 33.11	$ 33.37

Stock Options Outstanding (Deta

Stock Options Outstanding (Detail)	12 Months Ended
	Mar. 31, 2020$ / sharesshares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Options Outstanding, Number of Shares Outstanding | shares	1,160,091
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	5 years 10 months 9 days
Options Outstanding, Weighted-Average Exercise Price	$ 80.36
Options Exercisable , Number of Shares Outstanding | shares	868,081
Options Exercisable, Weighted-Average Exercise Price	$ 76.01
$23.17 - $29.84 [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	$ 29.84
Options Outstanding, Number of Shares Outstanding | shares	65,912
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	1 year 4 months 6 days
Options Outstanding, Weighted-Average Exercise Price	$ 23.27
Options Exercisable , Number of Shares Outstanding | shares	65,912
Options Exercisable, Weighted-Average Exercise Price	$ 23.27
$33.43 - $ 37.34 [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	33.43
Range of Exercise Prices, Upper Range	$ 37.34
Options Outstanding, Number of Shares Outstanding | shares	57,728
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	2 years 2 months 15 days
Options Outstanding, Weighted-Average Exercise Price	$ 34.03
Options Exercisable , Number of Shares Outstanding | shares	57,728
Options Exercisable, Weighted-Average Exercise Price	$ 34.03
$53.22 - $ 77.67 [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	53.22
Range of Exercise Prices, Upper Range	$ 77.67
Options Outstanding, Number of Shares Outstanding | shares	267,763
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	5 years 3 months 10 days
Options Outstanding, Weighted-Average Exercise Price	$ 72.46
Options Exercisable , Number of Shares Outstanding | shares	233,949
Options Exercisable, Weighted-Average Exercise Price	$ 72.37
$79.73 - $ 106.24 [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range	79.73
Range of Exercise Prices, Upper Range	$ 106.24
Options Outstanding, Number of Shares Outstanding | shares	768,688
Options Outstanding, Weighted-Average Remaining Contractual Life (in years)	6 years 8 months 19 days
Options Outstanding, Weighted-Average Exercise Price	$ 91.49
Options Exercisable , Number of Shares Outstanding | shares	510,492
Options Exercisable, Weighted-Average Exercise Price	$ 89.24

Summary of Activity for Nonvest

Summary of Activity for Nonvested Restricted Shares (Detail) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Nonvested at Beginning of Year	300,115	328,059	371,213
Number of Shares, Granted	118,292	121,836	107,964
Number of Shares, Vested	(169,347)	(147,790)	(119,187)
Number of Shares, Forfeited	(15,940)	(1,990)	(31,931)
Number of Shares, Nonvested at End of Year	233,120	300,115	328,059
Weighted Average Grant Date Fair Value, Nonvested at Beginning of Year	$ 78.94	$ 72.52	$ 66.07
Weighted Average Grant Date Fair Value, Granted	90.08	105.73	100.20
Weighted Average Grant Date Fair Value, Vested	92.98	75.94	60.27
Weighted Average Grant Date Fair Value, Forfeited	58.64	100.88	79.97
Weighted Average Grant Date Fair Value, Nonvested at End of Year	$ 75.35	$ 78.94	$ 72.52

Net Interest Expense, Net (Deta

Net Interest Expense, Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Interest Income (Expense), Net [Abstract]
Interest Income	$ (34)	$ (123)	$ (14)
Interest Expense	36,956	27,329	26,433
Other Expenses	1,499	1,168	1,219
Interest Expense, net	$ 38,421	$ 28,374	$ 27,638

Schedule of Reconciliation of O

Schedule of Reconciliation of Obligations and Fair Values of Plan Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Benefit Obligation at April 1,	$ 33,730	$ 33,370
Service Cost - Benefits Earned During the Period	339	399	$ 710
Interest Cost on Projected Benefit Obligation	1,351	1,347	1,466
Actuarial (Gain) Loss	2,464	(306)
Benefits Paid	(1,183)	(1,080)
Benefit Obligation at March 31,	36,701	33,730	33,370
Fair Value of Plan Assets at April 1,	36,541	33,412
Actual Return on Plan Assets	3,651	2,169
Employer Contributions		2,040
Benefits Paid	(1,183)	(1,080)
Fair Value of Plan Assets at March 31,	39,009	36,541	$ 33,412
Funded Status at March 31,	2,308	2,811
Other Assets	2,308	2,811
Accumulated Other Comprehensive Losses - Net Actuarial Loss	4,709	4,346
Accumulated Other Comprehensive Losses - Prior Service Cost		19
Accumulated Other Comprehensive Losses	4,709	4,365
Tax impact	(1,149)	(1,049)
Accumulated Other Comprehensive Losses, net of tax	$ 3,560	$ 3,316

Summary of Projected Benefit Ob

Summary of Projected Benefit Obligation, Accumulated Benefit Obligation and Fair Value of Plan Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Projected Benefit Obligation	$ 36,701	$ 33,730	$ 33,370
Accumulated Benefit Obligation	36,701	33,727
Fair Value of Plan Assets	$ 39,009	$ 36,541	$ 33,412

Components of Net Periodic Cost

Components of Net Periodic Cost (Detail) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Service Cost - Benefits Earned During the Period		$ 339	$ 399	$ 710
Interest Cost of Projected Benefit Obligation		1,351	1,347	1,466
Expected Return on Plan Assets		(1,702)	(1,853)	(2,137)
Recognized Net Actuarial Loss		153	230	566
Amortization of Prior-Service Cost		19	61	269
Settlement	$ 600			649
Net Periodic Pension Cost		$ 160	$ 184	$ 1,523

Pension and Profit Sharing Pl_3

Pension and Profit Sharing Plans - Additional information (Detail) $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)EmployeeCompensationPlan	Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, payments for settlement	$ 3,900
Settlement cost	$ 600				$ 649
Employees fully vesting in employer's own contributions made beginning in 2007, requirement years			4 years
Costs relating to employer discretionary contributions			$ 8,200	$ 8,000	8,400
Current actuarial estimates contributions			$ 700	600	600
Number of employees covered under multi-employer pension plans | Employee			50
Number of multi-employer plans | CompensationPlan			3
Collective bargaining agreement for employer covered under multi-employer plans, Expiration date, First			Feb. 29, 2024
Collective bargaining agreement for employer covered under multi-employer plans, Expiration date, Last			Mar. 31, 2025
Expenses related to multi employer plans			$ 1,700	$ 1,500	$ 1,600
Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Expenses related to multi employer plans		$ 1,800
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Current actuarial estimates contributions for fiscal year 2020			500
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Current actuarial estimates contributions for fiscal year 2020			$ 1,000

Schedule of Expected Benefit Pa

Schedule of Expected Benefit Payments (Detail) $ in Thousands	Mar. 31, 2020USD ($)
Compensation And Retirement Disclosure [Abstract]
2021	$ 1,586
2022	1,673
2023	1,721
2024	1,765
2025	1,892
2026-2030	$ 10,197

Schedule of Assumptions Used in

Schedule of Assumptions Used in Net Periodic Benefit Cost and Benefit Obligations (Detail)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Net Periodic Benefit Costs - Discount Rate	4.09%	4.12%	4.03%
Net Periodic Benefit Costs - Expected Return on Plan Assets	4.75%	5.50%	7.50%
Net Periodic Benefit Costs - Rate of Compensation Increase	3.50%	3.50%	3.50%
Benefit Obligations - Discount Rate	3.64%	4.09%
Benefit Obligations - Rate of Compensation Increase	3.50%	3.50%

Schedule of Pension Plans Weigh

Schedule of Pension Plans Weighted-Average Asset Allocation and Range of Target Allocation (Detail)	Mar. 31, 2020	Mar. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at March 31	100.00%	100.00%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at March 31	9.00%	14.00%
Equity Securities [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Range of Target Allocation		10.00%
Equity Securities [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Range of Target Allocation		20.00%
Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at March 31	89.00%	85.00%
Debt Securities [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Range of Target Allocation		60.00%
Debt Securities [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Range of Target Allocation		90.00%
Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of Plan Assets at March 31	2.00%	1.00%
Other [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Range of Target Allocation		0.00%
Other [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Range of Target Allocation		20.00%

Schedule of Fair Values of Defi

Schedule of Fair Values of Defined Benefit Plans (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	$ 39,009	$ 36,541	$ 33,412
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	3,470	4,525
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	34,579	31,516
Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	107	144
Commodity Linked Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans		212
Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	$ 853	$ 144

Schedule of Fair Values of De_2

Schedule of Fair Values of Defined Benefit Plans Determined Using Fair Value Hierarchy of Inputs (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	$ 39,009	$ 36,541	$ 33,412
Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	853	144
Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	38,156	36,397
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	3,470	4,525
Equity Securities [Member] | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	3,470	4,525
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	34,579	31,516
Fixed Income Securities [Member] | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	34,579	31,516
Real Estate Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	107	144
Real Estate Funds [Member] | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	107	144
Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	853	144
Cash Equivalents [Member] | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans	$ 853	144
Commodity Linked Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans		212
Commodity Linked Funds [Member] | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of defined benefit plans		$ 212

Condensed Consolidating Stateme

Condensed Consolidating Statement of Earnings and Comprehensive Earnings (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
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
Cost of Goods Sold									1,119,552	1,066,673	1,047,764
Gross Profit	63,913	87,514	104,506	75,329	56,582	80,421	97,931	91,634	331,262	326,568	338,756
Equity in Earnings of Unconsolidated Joint Venture									42,585	38,565	43,419
Corporate General and Administrative Expense									(65,410)	(37,371)	(41,205)
Impairment Losses									(224,267)	(220,265)
Legal Settlements										(1,800)	(45,098)
Other Non-Operating Income (Loss)									(25)	2,412	3,728
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
Income Taxes									25,170	(10,875)	(15,330)
Net Earnings	$ 72,429	$ (114,632)	$ 71,793	$ 41,304	$ (127,797)	$ 57,715	$ 72,603	$ 66,339	70,894	68,860	256,632
Net Actuarial Change in Benefit Plans, net of tax									(265)	696	3,384
Comprehensive Earnings									70,629	69,556	260,016
Eliminations [Member]
Equity in Earnings of Unconsolidated Joint Venture									(42,585)	(38,565)	(43,419)
Equity in Earnings of Subsidiaries									(100,225)	(77,954)	(289,950)
Earnings Before Income Taxes									(142,810)	(116,519)	(333,369)
Net Earnings									(142,810)	(116,519)	(333,369)
Net Actuarial Change in Benefit Plans, net of tax									265	(696)	(3,384)
Comprehensive Earnings									(142,545)	(117,215)	(336,753)
Parent [Member] | Reportable Legal Entities [Member]
Equity in Earnings of Unconsolidated Joint Venture									42,585	38,565	43,419
Equity in Earnings of Subsidiaries									100,225	77,954	289,950
Corporate General and Administrative Expense									(56,695)	(31,744)	(37,825)
Legal Settlements											(45,098)
Other Non-Operating Income (Loss)									(697)	(390)	(233)
Interest Expense, net									(38,372)	(28,325)	(27,609)
Earnings Before Income Taxes									47,046	56,060	222,604
Income Taxes									23,848	12,800	34,028
Net Earnings									70,894	68,860	256,632
Net Actuarial Change in Benefit Plans, net of tax									(265)	696	3,384
Comprehensive Earnings									70,629	69,556	260,016
Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Revenue									1,450,814	1,393,241	1,386,520
Cost of Goods Sold									1,119,552	1,066,673	1,047,764
Gross Profit									331,262	326,568	338,756
Equity in Earnings of Unconsolidated Joint Venture									42,585	38,565	43,419
Corporate General and Administrative Expense									(8,715)	(5,627)	(3,380)
Impairment Losses									(224,267)	(220,265)
Legal Settlements										(1,800)
Other Non-Operating Income (Loss)									672	2,802	3,961
Interest Expense, net									(49)	(49)	(29)
Earnings Before Income Taxes									141,488	140,194	382,727
Income Taxes									1,322	(23,675)	(49,358)
Net Earnings									142,810	116,519	333,369
Net Actuarial Change in Benefit Plans, net of tax									(265)	696	3,384
Comprehensive Earnings									$ 142,545	$ 117,215	$ 336,753

Condensed Consolidating Balance

Condensed Consolidating Balance Sheet (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 06, 2020	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Current Assets -
Cash and Cash Equivalents	$ 118,648		$ 8,601
Accounts and Notes Receivable	151,786		128,722
Inventories	272,508		275,194
Income Tax Receivable	128,413		5,480
Prepaid and Other Current Assets	6,862		9,624
Total Current Assets	678,217		427,621
Property, Plant and Equipment, net	1,762,109		1,426,939
Notes Receivable	9,139		2,898
Investment in Joint Venture	73,958		64,873
Operating Lease Right-of-Use Assets	30,530	$ 3,858
Goodwill and Intangible Assets, net	396,463		229,115
Other Assets	10,604		17,717
Total Assets	2,961,020		2,169,163	$ 2,368,003
Deferred Tax Assets	69,636		44,175
Current Liabilities -
Accounts Payable	86,197		80,884
Accrued Liabilities	73,293		61,949
Current Portion of Long-term Debt			36,500
Operating Lease Liabilities	10,207
Total Current Liabilities	169,697		179,333
Long-term Debt	1,567,315		655,092
Noncurrent Operating Lease Liabilities	49,809	$ 3,858
Other Long-term Liabilities	39,689		34,492
Deferred Income Taxes	166,667		90,759
Total Liabilities	1,993,177		959,676
Total Stockholders’ Equity	967,843		1,209,487	$ 1,417,690	$ 1,203,450
Liabilities and Stockholders' Equity, Total	2,961,020		2,169,163
Eliminations [Member]
Current Assets -
Investments in Subsidiaries and Receivables from Affiliates	(2,668,724)		(2,729,061)
Total Assets	(2,680,133)		(2,729,061)
Deferred Tax Assets	(11,409)
Current Liabilities -
Payables to Affiliates	(6,503,902)		(6,136,820)
Deferred Income Taxes	(11,409)
Total Liabilities	(6,515,311)		(6,136,820)
Total Stockholders’ Equity	3,835,178		3,407,759
Liabilities and Stockholders' Equity, Total	(2,680,133)		(2,729,061)
Parent [Member] | Reportable Legal Entities [Member]
Current Assets -
Cash and Cash Equivalents	116,269		5,779
Accounts and Notes Receivable	531		437
Income Tax Receivable	128,413		5,480
Prepaid and Other Current Assets	953		1,472
Total Current Assets	246,166		13,168
Property, Plant and Equipment, net	6,606		7,756
Investment in Joint Venture	70		70
Operating Lease Right-of-Use Assets	9,765
Investments in Subsidiaries and Receivables from Affiliates	2,489,326		2,322,335
Other Assets	4,417		4,571
Total Assets	2,767,759		2,347,900
Deferred Tax Assets	11,409
Current Liabilities -
Accounts Payable	6,365		5,520
Accrued Liabilities	33,409		22,470
Current Portion of Long-term Debt			36,500
Operating Lease Liabilities	1,180
Total Current Liabilities	40,954		64,490
Long-term Debt	1,567,315		655,092
Noncurrent Operating Lease Liabilities	12,249
Other Long-term Liabilities			3,303
Payables to Affiliates	179,398		406,727
Deferred Income Taxes			8,801
Total Liabilities	1,799,916		1,138,413
Total Stockholders’ Equity	967,843		1,209,487
Liabilities and Stockholders' Equity, Total	2,767,759		2,347,900
Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
Current Assets -
Cash and Cash Equivalents	2,379		2,822
Accounts and Notes Receivable	151,255		128,285
Inventories	272,508		275,194
Prepaid and Other Current Assets	5,909		8,152
Total Current Assets	432,051		414,453
Property, Plant and Equipment, net	1,755,503		1,419,183
Notes Receivable	9,139		2,898
Investment in Joint Venture	73,888		64,803
Operating Lease Right-of-Use Assets	20,765
Investments in Subsidiaries and Receivables from Affiliates	179,398		406,726
Goodwill and Intangible Assets, net	396,463		229,115
Other Assets	6,187		13,146
Total Assets	2,873,394		2,550,324
Current Liabilities -
Accounts Payable	79,832		75,364
Accrued Liabilities	39,884		39,479
Operating Lease Liabilities	9,027
Total Current Liabilities	128,743		114,843
Noncurrent Operating Lease Liabilities	37,560
Other Long-term Liabilities	39,689		31,189
Payables to Affiliates	6,324,504		5,730,093
Deferred Income Taxes	178,076		81,958
Total Liabilities	6,708,572		5,958,083
Total Stockholders’ Equity	(3,835,178)		(3,407,759)
Liabilities and Stockholders' Equity, Total	$ 2,873,394		$ 2,550,324

Condensed Consolidating State_2

Condensed Consolidating Statement of Cash Flows (Detail) - USD ($)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	$ 399,301,000	$ 350,284,000	$ 337,665,000
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant, and Equipment	(132,119,000)	(168,873,000)	(131,957,000)
Acquisition Spending	(699,361,000)		(36,761,000)
Proceeds from Sales of Property, Plant, and Equipment	400,000	2,281,000
Net Cash Used in Investing Activities	(831,080,000)	(166,592,000)	(168,718,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Increase in Revolving Credit Facility	250,000,000	70,000,000	15,000,000
Repayment of Private Placement Senior Unsecured Notes	(36,500,000)		(81,214,000)
Issuance of Term Loan	665,000,000
Dividends Paid to Stockholders	(17,142,000)	(18,927,000)	(19,438,000)
Purchase and Retirement of Common Stock	(313,887,000)	(271,988,000)	(61,078,000)
Proceeds from Stock Option Exercises	3,298,000	2,103,000	24,264,000
Shares Redeemed to Settle Employee Taxes on Stock Compensation	(4,063,000)	(4,347,000)	(4,974,000)
Payment of Debt Issuance Costs	(4,880,000)
Net Cash Provided by (Used in) Financing Activities	541,826,000	(223,159,000)	(127,440,000)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	110,047,000	(39,467,000)	41,507,000
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	8,601,000	48,068,000	6,561,000
CASH AND CASH EQUIVALENTS AT END OF PERIOD	118,648,000	8,601,000	48,068,000
Eliminations [Member]
CASH FLOWS FROM INVESTING ACTIVITIES
Investment in Subsidiaries			36,761,000
Net Cash Used in Investing Activities	699,361,000		36,761,000
Investment in Subsidiaries	699,361,000
CASH FLOWS FROM FINANCING ACTIVITIES
Intra-entity Activity, net	(699,361,000)		(36,761,000)
Net Cash Provided by (Used in) Financing Activities	(699,361,000)		(36,761,000)
Parent [Member] | Reportable Legal Entities [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	(181,476,000)	33,997,000	(83,947,000)
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant, and Equipment		(6,107,000)	(142,000)
Proceeds from Sales of Property, Plant, and Equipment	400,000
Investment in Subsidiaries			(36,761,000)
Net Cash Used in Investing Activities	(698,961,000)	(6,107,000)	(36,903,000)
Investment in Subsidiaries	(699,361,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Increase in Revolving Credit Facility	250,000,000	70,000,000	15,000,000
Repayment of Private Placement Senior Unsecured Notes	(36,500,000)		(81,214,000)
Issuance of Term Loan	665,000,000
Dividends Paid to Stockholders	(17,142,000)	(18,927,000)	(19,438,000)
Purchase and Retirement of Common Stock	(313,887,000)	(271,988,000)	(61,078,000)
Proceeds from Stock Option Exercises	3,298,000	2,103,000	24,264,000
Shares Redeemed to Settle Employee Taxes on Stock Compensation	(4,063,000)	(4,347,000)	(4,974,000)
Payment of Debt Issuance Costs	(4,880,000)
Intra-entity Activity, net	449,101,000	156,511,000	287,643,000
Net Cash Provided by (Used in) Financing Activities	990,927,000	(66,648,000)	160,203,000
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	110,490,000	(38,758,000)	39,353,000
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	5,779,000	44,537,000	5,184,000
CASH AND CASH EQUIVALENTS AT END OF PERIOD	116,269,000	5,779,000	44,537,000
Guarantor Subsidiaries [Member] | Reportable Legal Entities [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities	580,777,000	316,287,000	421,612,000
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant, and Equipment	(132,119,000)	(162,766,000)	(131,815,000)
Acquisition Spending	(699,361,000)		(36,761,000)
Proceeds from Sales of Property, Plant, and Equipment		2,281,000
Net Cash Used in Investing Activities	(831,480,000)	(160,485,000)	(168,576,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Intra-entity Activity, net	250,260,000	(156,511,000)	(250,882,000)
Net Cash Provided by (Used in) Financing Activities	250,260,000	(156,511,000)	(250,882,000)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(443,000)	(709,000)	2,154,000
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	2,822,000	3,531,000	1,377,000
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 2,379,000	$ 2,822,000	$ 3,531,000

Quarterly Results (unaudited)_2

Quarterly Results (unaudited) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
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
Gross Profit	63,913	87,514	104,506	75,329	56,582	80,421	97,931	91,634	331,262	326,568	338,756
Earnings (Loss) 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
Net Earnings (Loss)	$ 72,429	$ (114,632)	$ 71,793	$ 41,304	$ (127,797)	$ 57,715	$ 72,603	$ 66,339	$ 70,894	$ 68,860	$ 256,632
Diluted Earnings (Loss) Per Share	$ 1.74	$ (2.77)	$ 1.72	$ 0.94	$ (2.82)	$ 1.24	$ 1.53	$ 1.38	$ 1.68	$ 1.47	$ 5.28

Quarterly Results (unaudited) -

Quarterly Results (unaudited) - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Effect Of Fourth Quarter Events [Line Items]
Pre-tax impairment loss				$ 224,267	$ 220,265
Corporate, general and administrative expense				65,410	37,371	$ 41,205
Cost of good sold				1,119,552	1,066,673	1,047,764
Income tax expense (benefit)				$ (25,170)	$ 10,875	$ 15,330
Cares Act [Member]
Effect Of Fourth Quarter Events [Line Items]
Income tax expense (benefit)	$ 31,700
Business Development and Separation Costs [Member]
Effect Of Fourth Quarter Events [Line Items]
Corporate, general and administrative expense	6,500
Outage And Purchase Accounting Costs [Member]
Effect Of Fourth Quarter Events [Line Items]
Cost of good sold	6,800
Plant Expansion Costs [Member]
Effect Of Fourth Quarter Events [Line Items]
Cost of good sold	$ 3,000
Oil and Gas Proppants [Member]
Effect Of Fourth Quarter Events [Line Items]
Pre-tax impairment loss		$ 224,300	$ 220,300