Stockholders' Equity - Schedule of Non-vested Restricted Stock Units (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Jun. 30, 2022 USD ($) $ / shares shares
Time-Based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested, Shares, Beginning balance	1,420,532
Non-vested, Shares, Granted	782,887
Non-vested, Shares, Vested	(929,585)
Non-vested, Shares, Forfeited	(195,273)
Non-vested, Shares, Ending balance	1,078,561
Performance-Based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested, Shares, Beginning balance	654,619
Non-vested, Shares, Granted	383,637
Non-vested, Shares, Vested	(474,681)
Non-vested, Shares, Forfeited	(134,847)
Non-vested, Shares, Ending balance	428,728
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested, Shares, Beginning balance	2,075,151
Non-vested, Shares, Granted	1,166,524
Non-vested, Shares, Vested	(1,404,266)
Non-vested, Shares, Forfeited	(330,120)
Non-vested, Shares, Ending balance	1,507,289
Non-vested, Shares, Expected to vest	1,507,289
Non-vested, Weighted-Average Grant-Date Fair Value, Beginning balance | $ / shares	$ 44.20
Non-vested, Weighted-Average Grant-Date Fair Value, Granted | $ / shares	69.99
Non-vested, Weighted-Average Grant-Date Fair Value, Vested | $ / shares	60.17
Non-vested, Weighted-Average Grant-Date Fair Value, Forfeited | $ / shares	53.37
Non-vested, Weighted-Average Grant-Date Fair Value, Ending balance | $ / shares	61.99
Non-vested, Weighted-Average Grant-Date Fair Value, Expected to vest | $ / shares	$ 61.99
Non-vested, Weighted-Average Remaining Contractual Term (years), Expected to vest	11 months 1 day
Non-vested, Aggregate Intrinsic Value, Expected to vest | $	$ 38,014