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Income Taxes - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Income Tax Contingency |  |
Increase in valuation allowance for deferred tax assets | $ 29.7 | $ 17.3
Federal |  |
Income Tax Contingency |  |
Net operating loss carryforwards | 168.4 |
Operating loss carryforwards without expiration date | 117.9 |
Tax credit carryforward amount | 15.4 |
State |  |
Income Tax Contingency |  |
Net operating loss carryforwards | 170.1 |
Tax credit carryforward amount | $ 2.6 |

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