Shareholders' Equity Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Net income	$ 257,414	$ 144,757	$ 24,042
Average Shares Outstanding:
Weighted-average common shares outstanding for basic computation	38,471	38,758	38,658
Dilutive effect of potential common shares	634	538	341
Weighted-average common shares outstanding for dilutive computation	39,105	39,296	38,999
Net income per share — basic	$ 6.69	$ 3.73	$ 0.62
Net income per share — diluted	$ 6.58	$ 3.68	$ 0.62