Stock-Based Compensation - Restricted Stock Unit Activity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Withholding tax payments on net share settlements on equity awards			$ 4,924
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Withholding taxes remitted	$ 100	$ 100
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in dollars per share)	$ 42.35	$ 80.58	$ 55.10	$ 103.00
Fair value of restricted stock awards vested	$ 100	$ 200
Withholding taxes remitted			$ 4,900	$ 25,100
Withholding tax payments on net share settlements on equity awards			$ 4,900	$ 0