Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net Earnings	$ 400,540	$ 361,184
Adjustments to Reconcile Net Earnings to Net Cash Provided by Operating Activities, Net of Effect of Non-Cash Activity
Depreciation, Depletion and Amortization	111,347	103,689
Deferred Income Tax Provision	9,324	7,227
Stock Compensation Expense	15,356	13,636
Equity in Earnings of Unconsolidated Joint Venture	(22,790)	(23,631)
Distributions from Joint Venture	7,000	19,000
Changes in Operating Assets and Liabilities
Accounts and Notes Receivable	9,452	9,300
Inventories	(27,137)	(3,219)
Accounts Payable and Accrued Liabilities	3,278	(13,959)
Other Assets	(19,428)	4,411
Income Taxes Payable (Receivable)	13,607	2,473
Net Cash Provided by Operating Activities	500,549	480,111
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant, and Equipment	(87,848)	(60,951)
Acquisition Spending	(55,053)	(158,451)
Net Cash Used in Investing Activities	(142,901)	(219,402)
CASH FLOWS FROM FINANCING ACTIVITIES
Borrowings Under Revolving Credit Facility	222,000	200,000
Repayment of Borrowings Under Revolving Credit Facility	(272,000)	(70,000)
Repayment of Term Loan	(7,500)	(5,000)
Dividends Paid to Stockholders	(26,692)	(28,421)
Purchase and Retirement of Common Stock	(248,852)	(313,898)
Proceeds from Stock Option Exercises	11,560	840
Payment of Debt Issuance Costs	0	(903)
Shares Redeemed to Settle Employee Taxes on Stock Compensation	(2,494)	(1,806)
Net Cash Used in Financing Activities	(323,978)	(219,188)
NET INCREASE IN CASH AND CASH EQUIVALENTS	33,670	41,521
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	15,242	19,416
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 48,912	$ 60,937