Debt - Carrying Amounts (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Jun. 30, 2021
Debt Instrument [Line Items]
Unamortized discount and debt issuance cost	$ (5,285)	$ (6,493)
Carrying value of Senior Notes	135,792	134,584
2021 Non-Convertible Senior Notes due 2026: | Senior Notes
Debt Instrument [Line Items]
Interest rate, as a percent			8.375%
8.375% Senior Notes due 2026	141,077	141,077
Carrying value of Senior Notes	$ 103,833	$ 101,293