Convertible Senior Notes - Components (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022	May 31, 2020	May 29, 2020	May 18, 2020
Convertible Senior Notes
Unamortized debt discount	$ (1,700)	$ (1,700)
Net carrying amount	194,922	194,922	$ 193,919
3.75% Convertible Senior Notes
Convertible Senior Notes
Principal amount	197,278	197,278	197,278	$ 212,500	$ 12,500	$ 200,000
Unamortized debt issuance costs	(2,356)	(2,356)	(3,359)
Net carrying amount	$ 194,922	$ 194,922	$ 193,919
Interest rate (as a percent)	3.75%	3.75%		3.75%	3.75%	3.75%
Conversion of convertible senior notes to common stock	$ 0	$ 0