Stock-Based Compensation - Summarize Information about Stock Options (Details)	6 Months Ended
	Mar. 31, 2024 USD ($) $ / shares shares	Mar. 31, 2023 shares
Shares
Beginning balance (in shares) | shares	2,263,477
Granted (in shares) | shares	0	0
Cancelled (in shares) | shares	(30,437)
Exercised (in shares) | shares	(154,347)
Ending balance (in shares) | shares	2,078,693
Number of Options Outstanding, Exercisable (in shares) | shares	2,054,866
Weighted- Average Exercise Price Per Share
Beginning balance (in dollars per share) | $ / shares	$ 22.68
Granted (in dollars per share) | $ / shares	0
Cancelled (in dollars per share) | $ / shares	61.11
Exercised (in dollars per share) | $ / shares	11.53
Ending balance (in dollars per share) | $ / shares	23.04
Weighted-Average Exercise Price Per Share, Exercisable (in dollars per share) | $ / shares	$ 22.72
Weighted- Average Remaining Contractual Term (Years)	4 years
Weighted-Average Remaining Contractual Term, Exercisable	3 years 10 months 24 days
Aggregate Intrinsic Value | $	$ 26,788,979
Aggregate Intrinsic Value, Exercisable | $	$ 26,788,746