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, 2024	$ 1,308,535	$ 341		$ 1,311,567	$ (3,373)
Net Earnings	133,842			133,842
Stock Option Exercises and Restricted Share Vesting	56		$ 56
Stock Compensation Expense	4,539		4,539
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 Stockholders	(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)
Beginning balance at Mar. 31, 2025	1,456,700	330		1,459,495	(3,125)
Net Earnings	123,362			123,362
Stock Compensation Expense	4,822		4,822
Shares Redeemed to Settle Employee Taxes	(5,579)	(1)	$ (4,822)	(756)
Purchase and Retirement of Common Stock	(79,403)	(3)		(79,400)
Dividends to Stockholders	(8,169)			(8,169)
Unfunded Pension Liability, net of tax	41				41
Ending Balance at Jun. 30, 2025	$ 1,491,774	$ 326		$ 1,494,532	$ (3,084)