Income Taxes - Summary of Significant Components of Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Capitalized start-up costs	$ 875	$ 1,075
Operating lease liability	9,290	3,859
Stock-based compensation	3,675	1,344
Net operating losses	46,339	19,399
R&D and investment tax credits	9,560	5,578
Unrealized gain/loss	195
Deferred revenue	15,053	23,157
Other	426	168
Total gross deferred tax assets	85,413	54,580
Deferred tax liabilities:
Right-of-use asset	(9,242)	(3,967)
Fixed assets	(725)	(744)
Unrealized gain/loss		(3)
Less: valuation allowance	$ (75,446)	$ (49,866)