Debt - Schedule of Debt Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Gross Amount	$ 333,373	$ 333,373	$ 367,762
Less current portion, Gross Amount	103,373	103,373	34,389
Gross Amount, excluding current maturities	230,000	230,000	333,373
Debt Issuance Costs	(5,663)	(6,045)	(7,232)
Less current portion, Debt Issuance Costs	(168)	(301)	(82)
Debt Issuance Costs, excluding current	(5,495)	(5,744)	(7,150)
Carrying Amount	327,710	327,328	360,530
Less current portion, Carrying Amount	103,205	103,072	34,307
Carrying Amount, excluding current maturities	224,505	224,256	326,223
Senior Notes
Debt Instrument [Line Items]
Gross Amount	333,373
2029 Convertible Notes | Senior Notes
Debt Instrument [Line Items]
Gross Amount	230,000	230,000	230,000
Debt Issuance Costs	(5,495)	(5,744)	(6,472)
Carrying Amount	224,505	224,256	223,528
2025 Convertible Notes | Senior Notes
Debt Instrument [Line Items]
Gross Amount	103,373	103,373	103,373
Debt Issuance Costs	(168)	(301)	(678)
Carrying Amount	103,205	103,072	102,695
2024 Convertible Notes | Senior Notes
Debt Instrument [Line Items]
Gross Amount	0	0	34,389
Debt Issuance Costs	0	0	(82)
Carrying Amount	$ 0	$ 0	$ 34,307