Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net Earnings	$ 271,402	$ 244,000
Adjustments to Reconcile Net Earnings to Net Cash Provided by Operating Activities, Net of Effect of Non-Cash Activity
Depreciation, Depletion and Amortization	73,879	68,874
Deferred Income Tax Provision	6,826	6,198
Stock Compensation Expense	10,999	9,548
Equity in Earnings of Unconsolidated Joint Venture	(13,505)	(12,254)
Distributions from Joint Venture	2,500	7,500
Changes in Operating Assets and Liabilities
Accounts and Notes Receivable	(42,398)	(50,697)
Inventories	5,317	18,101
Accounts Payable and Accrued Liabilities	3,996	1,634
Other Assets	(14,487)	4,589
Income Taxes Payable (Receivable)	8,310	2,952
Net Cash Provided by Operating Activities	312,839	300,445
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant, and Equipment	(65,453)	(43,249)
Acquisition Spending	(55,053)	(158,451)
Net Cash Used in Investing Activities	(120,506)	(201,700)
CASH FLOWS FROM FINANCING ACTIVITIES
Increase in Credit Facility	5,000	200,000
Repayment of Term Loan	(5,000)	(2,500)
Dividends Paid to Stockholders	(17,908)	(19,149)
Purchase and Retirement of Common Stock	(151,321)	(210,398)
Proceeds from Stock Option Exercises	11,469	735
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	(160,254)	(34,021)
NET INCREASE IN CASH AND CASH EQUIVALENTS	32,079	64,724
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	15,242	19,416
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 47,321	$ 84,140