Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Losses [Member]
Beginning balance at Mar. 31, 2023	$ 1,185,694	$ 358		$ 1,188,883	$ (3,547)
Net Income (Loss)	120,849			120,849
Stock Compensation Expense	6,457		$ 6,457
Stock Option Exercises and Restricted Share Issuances	10,385	2	10,383
Shares Redeemed to Settle Employee Taxes	(1,360)	(1)	(1,359)
Purchase and Retirement of Common Stock	(74,799)	(5)	(15,481)	(59,313)
Dividends to Shareholders	(8,863)			(8,863)
Unfunded Pension Liability, net of tax	48				48
Ending Balance at Jun. 30, 2023	1,238,411	354		1,241,556	(3,499)
Beginning balance at Mar. 31, 2024	1,308,535	341		1,311,567	(3,373)
Net Income (Loss)	133,842			133,842
Stock Compensation Expense	4,539		4,539
Stock Option Exercises and Restricted Share Issuances	56		56
Shares Redeemed to Settle Employee Taxes	(1,421)		(1,421)
Purchase and Retirement of Common Stock	(86,345)	(3)	$ (3,174)	(83,168)
Dividends to Shareholders	(8,453)			(8,453)
Unfunded Pension Liability, net of tax	45				45
Ending Balance at Jun. 30, 2024	$ 1,350,798	$ 338		$ 1,353,788	$ (3,328)