Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income (Loss)	$ 133,842	$ 120,849
Adjustments to Reconcile Net Earnings to Net Cash Provided by Operating Activities, Net of Effect of NonCash Activity
Depreciation, Depletion and Amortization	38,350	36,682
Deferred Income Tax Provision	(2,212)	2,312
Stock Compensation Expense	4,539	6,457
Equity in Earnings of Unconsolidated Joint Venture	(7,716)	(3,159)
Distributions from Joint Venture	0	2,500
Changes in Operating Assets and Liabilities
Accounts and Notes Receivable	(75,443)	(46,213)
Inventories	2,304	4,166
Accounts Payable and Accrued Liabilities	15,503	(5,100)
Other Assets	(16,724)	(9,577)
Income Taxes Payable (Receivable)	40,193	31,570
Net Cash Provided by Operating Activities	132,636	140,487
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to Property, Plant, and Equipment	(33,128)	(35,999)
Acquisition Spending	0	(55,053)
Net Cash Used in Investing Activities	(33,128)	(91,052)
CASH FLOWS FROM FINANCING ACTIVITIES
Increase in Credit Facility	10,000	65,000
Repayment of Term Loan	(2,500)	(2,500)
Dividends Paid to Stockholders	(8,538)	(8,995)
Purchase and Retirement of Common Stock	(85,490)	(74,058)
Proceeds from Stock Option Exercises	56	10,385
Shares Redeemed to Settle Employee Taxes on Stock Compensation	(1,421)	(1,360)
Net Cash Used in Financing Activities	(87,893)	(11,528)
NET INCREASE IN CASH AND CASH EQUIVALENTS	11,615	37,907
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	34,925	15,242
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 46,540	$ 53,149