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Income Taxes - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Operating Loss Carryforwards [Line Items] |  |
Provision for income taxes | $ 0 | $ 0
Deferred tax liabilities | 0 | 0
Valuation allowance | 48,353,000 | 20,376,000
Accrued interest and penalties related to uncertain tax positions | 0 | 0
Federal |  |
Operating Loss Carryforwards [Line Items] |  |
Net operating losses available to reduce future taxable income | 156,584,000 | 67,955,000
Net operating losses available to reduce future taxable income subject to expiration | 110,000 |
Net operating losses available to reduce future taxable income not subject to expiration | 114,514,000 |
Federal | Research and development |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credit carryforward | 3,373,000 | 2,299,000
State |  |
Operating Loss Carryforwards [Line Items] |  |
Net operating losses available to reduce future taxable income | 104,555,000 | 41,106,000
Net operating losses available to reduce future taxable income subject to expiration | 5,041,000 |
State | Research and development |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credit carryforward | $ 2,854,000 | $ 2,043,000

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