Debt - Net carrying amount (Details) - Convertible Notes - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Principal outstanding	$ 150,000	$ 150,000
Unamortized debt discount and issuance costs	(34,100)	(36,627)
Net carrying value	115,900	113,373
Fair value of the Notes	$ 121,400,000	$ 126,000,000.0