Income Taxes - Schedule of Total Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Federal net operating loss carryforward	$ 18,233	$ 5,445
State net operating loss carryforward	5,269	1,593
R&D credit carryforwards	6,385	4,023
Capitalized start-up costs	242	264
Accruals and reserves	629	327
Deferred revenue	6,769	15,234
Stock options	1,026	318
Lease liability	1,908
Total deferred tax asset	40,461	27,204
Deferred tax liability:
Fixed assets	(648)	(170)
Right of use asset	(1,786)
Total deferred tax liability	(2,434)	(170)
Valuation Allowance	$ (38,027)	$ (27,034)

Deferred tax assets lease liability.

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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