Line of Credit and Long-Term Debt - Long-term debt (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Long-Term Debt
Unamortized discount, including debt issuance costs, on convertible senior subordinated notes	$ (4,703)	$ (5,701)
Total long-term debt, net	320,297	319,299
2026 Notes, Convertible Senior Subordinated Notes
Long-Term Debt
Total long-term debt, net	320,297
Convertible senior subordinated notes - excluding related party
Long-Term Debt
Convertible senior subordinated notes	235,272	$ 325,000
Convertible senior subordinated notes - related party
Long-Term Debt
Convertible senior subordinated notes	$ 89,728