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Provision for Income Taxes - Schedule of Components of Deferred Tax Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax assets: |  |
Federal and state net operating loss carryforwards | $ 54,526 | $ 30,049
Research and development credits carryforwards | 11,209 | 8,077
Depreciation | 9,068 | 6,052
Deferred Revenue | 2,407 | 3,277
Lease liability | 3,831 |
Other | 5,890 | 2,965
Total deferred tax assets | 86,931 | 50,420
Deferred tax liabilities: |  |
Right-of-use assets | (2,704) |
Total deferred tax liabilities | (2,704) |
Less valuation allowance | $ (84,227) | $ (50,420)

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