Convertible Notes - Summary of Issuance (Details) - Convertible debt - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Gross proceeds	$ 137,500	$ 107,000
Unamortized debt discounts and deferred financing offering costs	(629)	(7,011)
Net carrying amount	136,871	99,989
Related party
Debt Instrument [Line Items]
Gross proceeds	62,500	10,000
Unamortized debt discounts and deferred financing offering costs	(232)	(589)
Net carrying amount	62,268	9,411
Others
Debt Instrument [Line Items]
Gross proceeds	75,000	97,000
Unamortized debt discounts and deferred financing offering costs	(397)	(6,422)
Net carrying amount	$ 74,603	$ 90,578