Convertible Senior Notes - Schedule of Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Oct. 05, 2020
Debt Instrument [Line Items]
Amortization of debt discount and issuance costs	$ 8,812	$ 2,143	$ 0
Convertible notes | Convertible Senior Notes Due 2027
Debt Instrument [Line Items]
Principal amount of Notes	230,000	230,000
Less: Unamortized debt discount and issuance costs	(71,835)	(80,647)		$ (82,800)
Net carrying amount	158,165	149,353
Equity component — net carrying value	75,333	75,333
Contractual coupon interest	8,811	1,600
Amortization of debt discount and issuance costs	6,359	2,143
Total interest expense	$ 15,170	$ 3,743