Stockholders' Equity - Schedule of Non-vested Restricted Stock Units (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Mar. 31, 2024 USD ($) $ / shares shares
Time-Based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested, Shares, Beginning balance	2,372,145
Non-vested, Shares, Granted	2,084,023
Non-vested, Shares, Vested	(1,232,235)
Non-vested, Shares, Forfeited	(122,308)
Non-vested, Shares, Ending balance	3,101,625
Performance-Based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested, Shares, Beginning balance	1,145,550
Non-vested, Shares, Granted	406,166
Non-vested, Shares, Vested	(63,998)
Non-vested, Shares, Forfeited	(137,068)
Non-vested, Shares, Ending balance	1,350,650
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Non-vested, Shares, Beginning balance	3,517,695
Non-vested, Shares, Granted	2,490,189
Non-vested, Shares, Vested	(1,296,233)
Non-vested, Shares, Forfeited	(259,376)
Non-vested, Shares, Ending balance	4,452,275
Non-vested, Shares, Expected to vest	4,452,275
Non-vested, Weighted-Average Grant-Date Fair Value, Beginning balance | $ / shares	$ 32.52
Non-vested, Weighted-Average Grant-Date Fair Value, Granted | $ / shares	17.37
Non-vested, Weighted-Average Grant-Date Fair Value, Vested | $ / shares	35.06
Non-vested, Weighted-Average Grant-Date Fair Value, Forfeited | $ / shares	39.93
Non-vested, Weighted-Average Grant-Date Fair Value, Ending balance | $ / shares	23.63
Non-vested, Weighted-Average Grant-Date Fair Value, Expected to vest | $ / shares	$ 23.63
Non-vested, Weighted-Average Remaining Contractual Term (years), Expected to vest	1 year 4 months 2 days
Non-vested, Aggregate Intrinsic Value, Expected to vest | $	$ 70,079