Debt - Convertible Debt (Details) - 1.75% senior notes due in 2026 - Senior notes - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Debt Conversion [Line Items]
Contractual interest expense	$ 8,750	$ 5,906
Amortization of issuance costs	2,695	1,777
Total Convertible Notes interest expense	$ 11,445	$ 7,683

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Name:	us-gaap_InterestExpenseDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration