Stock Incentive Plans - Long term incentive plans (Details) - Long Term Incentive Plans - USD ($) $ / shares in Units, $ 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]
Number of shares issued	204,175	251,783	210,864
Number of shares surrendered	102,120	124,007	105,402
Share value on date of issuance (in USD per share)	$ 311.65	$ 271.38	$ 317.60
Total value of shares issued	$ 63,631	$ 68,329	$ 66,970