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Income Taxes - Narrative (Details) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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Income Tax Disclosure [Abstract] |  |  |
Federal net operating loss carryforwards | $ 89,400,000 | $ 70,600,000 |
State net operating loss carryforwards | 61,000,000.0 | 48,900,000 |
Federal tax loss carryforwards, subject to expiration | 43,500,000 |  |
Federal net operating loss carryforwards, carryforward indefinitely | 45,900,000 |  |
Tax attribute carryforwards cannot be utilized under IRC Section 382 |  |  | $ 61,800,000
Unrecognized tax benefits | $ 0 | $ 0 |

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