Stock-Based Compensation (Nonemployee Director Restricted Stock Grant Details) (Details) - Director Restricted Stock [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted (in shares)	4	5	4
Grant date fair value	$ 919	$ 799	$ 774
Weighted average grant date fair value per award (in dollars per share)	$ 203.34	$ 162.15	$ 172.89