Convertible Senior Notes and Capped Call Transactions - Schedule of Carrying Amount of Liability Component of Convertible Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Carrying Amount of Liability Component:
Net carrying amount	$ 574,238	$ 538,432
Convertible Debt | Convertible Senior Notes
Carrying Amount of Liability Component:
Principal	747,500	747,500
Unamortized discount	(162,960)	(196,269)
Unamortized issuance costs	$ (10,302)	$ (12,799)