Stock Incentive Plans - Summary of the status and shares subject to restricted stock units and average price per share (Details) - Restricted Stock Units (RSUs)	12 Months Ended
	Jun. 30, 2023 $ / shares shares
Number of Shares
Beginning balance, nonvested (in shares) | shares	277,902
Granted (in shares) | shares	93,336
Vested (in shares) | shares	(155,718)
Canceled (in shares) | shares	(9,999)
Ending balance, nonvested (in shares) | shares	205,521
Weighted-Average Grant Date Fair Value
Beginning balance, nonvested (in USD per share) | $ / shares	$ 224.40
Granted (in USD per share) | $ / shares	298.54
Vested (in USD per share) | $ / shares	194.46
Canceled (in USD per share) | $ / shares	262.95
Ending balance, nonvested (in USD per share) | $ / shares	$ 278.88
Director
Number of Shares
Beginning balance, nonvested (in shares) | shares	5,620
Granted (in shares) | shares	6,638
Vested (in shares) | shares	(5,650)
Canceled (in shares) | shares	(383)
Ending balance, nonvested (in shares) | shares	6,225
Weighted-Average Grant Date Fair Value
Beginning balance, nonvested (in USD per share) | $ / shares	$ 297.89
Granted (in USD per share) | $ / shares	278.99
Vested (in USD per share) | $ / shares	297.89
Canceled (in USD per share) | $ / shares	278.90
Ending balance, nonvested (in USD per share) | $ / shares	$ 278.90