Convertible Senior Notes Due 2023 - Summary of liability component of 2023 Notes (Details) - Convertible Debt - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
2023 Notes	$ 402,500,000	$ 402,500,000
Unamortized debt discount and deferred financing costs	(1,062,000)	(23,248,000)
Total carrying value	$ 401,438,000	$ 379,252,000