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Subsidiaries sold carrying amount.

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

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

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The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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Amount of gain (loss) on sale or disposal of equity in securities of subsidiaries.

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

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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The percentage points added to the reference rate or index during the adjustment period to compute the variable [fully indexed] rate on the loans receivable realized during the reporting period. This may be an effective margin for the period depending on the specific terms of the underlying loan agreement (for example, an annual disclosure for a loan with a quarterly adjustment period).

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Maturity date of long-term debt, in CCYY-MM-DD format.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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Discontinued Operations and Other Dispositions - Additional Information (Detail) - USD ($) shares in Millions			6 Months Ended
	Sep. 18, 2020	Apr. 17, 2020	Sep. 30, 2020	Mar. 31, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Outstanding borrowings			$ 500,000,000.0
Gain on Sale of Businesses			51,973,000
Gain (Loss) on sale of Subsidiary			61,203,000
Assets			2,871,283,000	$ 2,961,020,000
Liabilities			1,703,252,000	1,993,177,000
Discontinued Operations, Disposed of by Sale [Member] \| Smart Sand, Inc. [Member] \| Loan and Security Agreement [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Loan amount provided to the purchaser	$ 5,000,000.0
Escrow deposit	$ 5,000,000.0
Percentage of loan amount outstanding in shares	50.00%
Fixed rate of interest on loan	6.00%
Interest payment period	one-year
Fixed rate of interest on loan, maturity date	Sep. 18, 2024
Outstanding borrowings			0
Discontinued Operations, Disposed of by Sale [Member] \| Smart Sand, Inc. [Member] \| Loan and Security Agreement [Member] \| Modified Interest Rate [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Fixed modified interest rate after a specific time period	8.00%
Discontinued Operations, Disposed of by Sale [Member] \| Smart Sand, Inc. [Member] \| Restricted Cash [Member] \| Loan and Security Agreement [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Escrow deposit			5,000,000.0
Western Aggregates LLC and Mathews Readymix LLC [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Assets		$ 43,800,000
Liabilities		2,300,000
Western Aggregates LLC and Mathews Readymix LLC [Member] \| Teichert Inc
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Purcahse price of acquisition		93,500,000
Gain (Loss) on sale of Subsidiary		$ 52,000,000.0
Oil and Gas Proppants [Member] \| Discontinued Operations, Disposed of by Sale [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Gain on Sale of Businesses			$ 9,200,000
Assets				13,831,000
Liabilities				$ 23,914,000
Oil and Gas Proppants [Member] \| Discontinued Operations, Disposed of by Sale [Member] \| Smart Sand, Inc. [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Purchase price paid in shares of common stock	2.0
Oil and Gas Proppants [Member] \| Discontinued Operations, Disposed of by Sale [Member] \| Smart Sand, Inc. [Member] \| Prepaid and Other Assets [Member] \| Indemnification Claims as Escrow Deposit [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Purchase price paid in shares of common stock			0.3