Condensed Statements of Shareholder's Equity Condensed Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Common Stock [Member] Stock Options and Stock Appreciation Rights [ Member]	Common Stock [Member] Performance Shares [Member]	Common Stock [Member] Restricted Stock Units (RSUs) [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Stock Options and Stock Appreciation Rights [ Member]	Additional Paid-in Capital [Member] Performance Shares [Member]	Additional Paid-in Capital [Member] Restricted Stock Units (RSUs) [Member]	Retained Earnings [Member]	Treasury Shares- at Cost	Treasury Shares- at Cost Stock Options and Stock Appreciation Rights [ Member]	Treasury Shares- at Cost Performance Shares [Member]	Treasury Shares- at Cost Restricted Stock Units (RSUs) [Member]	Total Accumulated Other Comprehensive Income (Loss) [Member]	Parent [Member]	Parent [Member] Stock Options and Stock Appreciation Rights [ Member]	Parent [Member] Performance Shares [Member]	Parent [Member] Restricted Stock Units (RSUs) [Member]
Beginning balance, shares at Jun. 30, 2022		38,499
Beginning balance at Jun. 30, 2022		$ 10,000				$ 183,822				$ 1,499,676	$ (471,848)				$ (72,295)	$ 1,149,355
Net income	$ 76,880															76,880
Other comprehensive loss	$ (1,635)														(1,635)	(1,635)
Cash Dividends per Common Share	$ 0.34
Purchases of common stock for treasury, Shares		(8)
Purchases of common stock for treasury, Amount											(716)					(716)
Exercise of stock appreciation rights and options, shares			21
Performance share awards, shares				23
Restricted stock units, shares					33
Additional Paid in Capital, Exercise of stock appreciation rights and options, Performance share awards, Restricted stock units							$ (860)	$ (1,290)	$ (1,668)
Exercise of stock appreciation rights and options												$ (366)
Performance share awards													$ (758)
Restricted stock units														$ (902)
Total Shareholders' Equity, Exercise of stock appreciation rights and options, Performance share awards, Restricted stock units																	$ (1,226)	$ (2,048)	$ (2,570)
Compensation expense						1,939	1,424									1,939	1,424
Other, Shares		3
Other						(19)				(5)	61					37
Ending balance, shares at Sep. 30, 2022		38,571
Ending balance at Sep. 30, 2022		$ 10,000				183,348				1,576,551	(474,529)				(73,930)	1,221,440
Beginning balance, shares at Jun. 30, 2023		38,657
Beginning balance at Jun. 30, 2023	$ 1,458,437	$ 10,000				188,646				1,792,632	(477,545)				(55,296)	1,458,437
Net income	93,826															93,826
Other comprehensive loss	$ (7,074)														(7,074)	(7,074)
Cash Dividends per Common Share	$ 0.35
Cash dividends										(23)						(23)
Exercise of stock appreciation rights and options, shares			32
Performance share awards, shares				54
Restricted stock units, shares					13
Additional Paid in Capital, Exercise of stock appreciation rights and options, Performance share awards, Restricted stock units							(1,681)	$ (3,072)	$ (726)
Exercise of stock appreciation rights and options												$ (1,912)
Performance share awards													$ (3,487)
Restricted stock units														$ (910)
Total Shareholders' Equity, Exercise of stock appreciation rights and options, Performance share awards, Restricted stock units																	(3,593)	$ (6,559)	$ (1,636)
Compensation expense						1,976	$ 844									1,976	$ 844
Other, Shares		(1)
Other						(1)				(3)	(78)					(82)
Ending balance, shares at Sep. 30, 2023		38,755
Ending balance at Sep. 30, 2023	$ 1,536,116	$ 10,000				$ 185,986				$ 1,886,432	$ (483,932)				$ (62,370)	$ 1,536,116