Convertible Senior Notes - Schedule of Components of Convertible Senior Notes (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2019	Nov. 30, 2017
0% Convertible Senior Notes Due 2026
Liability component:
Principal	$ 375,000	$ 375,000	$ 375,000
Less: debt discount, net of amortization	(8,352)	(97,261)
Net carrying amount	366,648	277,739
Equity component		99,000
0.125% Convertible Senior Notes Due 2024
Liability component:
Principal	450,000	450,000		$ 450,000
Less: debt discount, net of amortization	(6,958)	(62,044)
Net carrying amount	443,042	387,956
Equity component		86,133
1.50% Convertible Senior Notes Due 2022
Liability component:
Principal	8	8			$ 115,000
Net carrying amount	$ 8	8
Equity component		$ (39,358)