Income tax reconciliation change in CARES act of 2020 aid amount.

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Income tax reconciliation change in reserves.

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Income tax reconciliation deduction depletion.

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- Definition

Income tax reconciliation deductions excess tax benefit.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for award under share-based payment arrangement. Includes, but is not limited to, expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.

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Schedule of Effective Tax Rates Vary from Federal Statutory Rates (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Earnings from Continuing Operations Before Income Taxes	$ 90,214	$ 131,846	$ 131,315	$ 121,719	$ 79,442	$ 105,072	$ 109,671	$ 129,927	$ 475,094	$ 424,112	$ 255,695
Income Taxes at Statutory Rate									99,770	89,063	53,998
State Income Taxes, net									12,743	11,713	3,579
Statutory Depletion in Excess of Cost									(7,796)	(5,263)	(3,078)
Excess Tax Benefit from Stock Compensation									(3,048)	(3,229)	307
Meals and Entertainment Disallowance									279	220	537
Limitation on Officers' Compensation									2,568	1,503	1,018
Impact of CARES Act of 2020											(35,936)
Credits										(400)	(2,150)
Valuation Allowance									(4,556)	300	2,212
Change in Reserves										(2,916)	4,200
Other									887	(1,045)	(183)
Provision for Income Taxes									$ 100,847	$ 89,946	$ 24,504
Effective Tax Rate									21.00%	21.00%	10.00%