Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Debt Instrument [Line Items]
Total loans	$ 213,625
Less unamortized issuance costs	(10,051)	$ (12,029)
Long-term Debt, Current Maturities	(15,523)	(15,523)
Total long-term debt, net of current portion	$ 188,051	222,448
Weighted average interest rate on debt	10.44%
Term loan
Debt Instrument [Line Items]
Total loans	$ 213,625	$ 250,000