Income Taxes - Components of the company's current and deferred tax assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Operating loss carryforwards	$ 30,536	$ 13,657
Research credit carryforwards	1,862	1,233
Operating lease liability	3,626	285
Accrued expenses and other	5,902	3,050
Total deferred tax assets	41,926	18,225
Deferred tax liabilities:
Operating lease right-of-use asset	(3,665)	(270)
Depreciation & amortization	(439)	(311)
Total deferred tax liabilities	(4,104)	(581)
Valuation allowance	34,601	16,085
Net deferred tax assets	$ 3,221	$ 1,559