Fair Value Measurements - Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Warrant Liabilities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 5,241	$ 0
Issuance of Notes Payable Warrants and Convertible Notes Payable Warrants	6,663	4,580
Assumption of Private Placement Warrants upon Merger	34,045
Change in estimated fair value	(7,699)	661
Conversion of Notes Payable Warrants upon Merger	(4,576)
Balance, end of period	42,457	$ 5,241
Conversion option liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Issuance of Notes Payable Warrants and Convertible Notes Payable Warrants	$ 8,783