Income Taxes - Summary of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Net operating losses	$ 108,800	$ 48,832
Tax credit carryforwards	18,288	10,270
Lease liability	6,010	6,430
Intangibles	1,859	1,469
Stock-based compensation	8,374	4,496
Depreciation and amortization	477	230
Other	4,304	14
Total gross deferred tax asset	148,112	71,741
Valuation allowance	(142,674)	(65,813)
Net deferred tax asset	5,438	5,928
Deferred tax liability
Operating lease assets	5,438	(5,928)
Total deferred tax liability	$ (5,438)	$ (5,928)