Fair Value of Financial Instruments - Schedule of Changes in the Fair Value of Level 3 Financial Instruments (Details) - Level 3 - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Redeemable Convertible Preferred Stock Warrant Liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning balance	$ (49,293)	$ (162)
Change in the fair value included in other income (expense), net	(8,804)	0
Private placement warrant liability acquired as part of the merger	0
Issuance of preferred stock upon exercise of warrants	58,097
Fair Value, ending balance	0	(162)
Private Placement Warrant Liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning balance	0	0
Change in the fair value included in other income (expense), net	4,652	0
Private placement warrant liability acquired as part of the merger	(19,377)
Issuance of preferred stock upon exercise of warrants	0
Fair Value, ending balance	(14,725)	0
Derivative Liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value, beginning balance	0	0
Change in the fair value included in other income (expense), net	0	(5,308)
Private placement warrant liability acquired as part of the merger	0
Issuance of preferred stock upon exercise of warrants	0
Fair Value, ending balance	$ 0	$ (5,308)