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Long-Term Debt - Summary of Maturities of Borrowing Obligations (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Oct. 01, 2022	Sep. 30, 2022
Debt Instrument [Line Items]
2023	$ 6,250
2024	12,500
2025	262,500
Total before unamortized discount and issuance costs and current portion	281,250
Less: unamortized discount and issuance costs	(4,063)
Less: current portion of long-term debt	(12,500)		$ (10,938)
Total long-term debt	264,687	$ 270,430	$ 259,436
Senior Facilities
Debt Instrument [Line Items]
2023	6,250
2024	12,500
2025	87,500
Total before unamortized discount and issuance costs and current portion	106,250
Less: unamortized discount and issuance costs	(1,517)
Less: current portion of long-term debt	(12,500)
Total long-term debt	92,233
Convertible Senior Notes
Debt Instrument [Line Items]
2025	175,000
Total before unamortized discount and issuance costs and current portion	175,000
Less: unamortized discount and issuance costs	(2,546)
Total long-term debt	$ 172,454