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Fair Value Measurements - Summary of Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Assets: |  |
Marketable securities: | $ 22,405,000 | $ 0
Liabilities: |  |
Warrant liabilities | 45,455,000 | 28,708,000
Corporate bonds |  |
Assets: |  |
Marketable securities: | 2,031,000 |
Commercial paper |  |
Assets: |  |
Marketable securities: | 20,374,000 |
Recurring |  |
Assets: |  |
Total assets | 80,563,000 | 80,576,000
Liabilities: |  |
Warrant liabilities | 45,455,000 | 28,708,000
Total liabilities | 45,455,000 | 28,708,000
Recurring | (Level 1) |  |
Assets: |  |
Total assets | 58,158,000 | 80,576,000
Liabilities: |  |
Warrant liabilities | 0 | 0
Total liabilities | 0 | 0
Recurring | (Level 2) |  |
Assets: |  |
Total assets | 22,405,000 | 0
Liabilities: |  |
Warrant liabilities | 0 | 0
Total liabilities | 0 | 0
Recurring | (Level 3) |  |
Assets: |  |
Total assets | 0 | 0
Liabilities: |  |
Warrant liabilities | 45,455,000 | 28,708,000
Total liabilities | 45,455,000 | 28,708,000
Recurring | Corporate bonds |  |
Assets: |  |
Marketable securities: | 2,031,000 |
Recurring | Corporate bonds | (Level 1) |  |
Assets: |  |
Marketable securities: | 0 |
Recurring | Corporate bonds | (Level 2) |  |
Assets: |  |
Marketable securities: | 2,031,000 |
Recurring | Corporate bonds | (Level 3) |  |
Assets: |  |
Marketable securities: | 0 |
Recurring | Commercial paper |  |
Assets: |  |
Marketable securities: | 20,374,000 |
Recurring | Commercial paper | (Level 1) |  |
Assets: |  |
Marketable securities: | 0 |
Recurring | Commercial paper | (Level 2) |  |
Assets: |  |
Marketable securities: | 20,374,000 |
Recurring | Commercial paper | (Level 3) |  |
Assets: |  |
Marketable securities: | 0 |
Recurring | Money market funds |  |
Assets: |  |
Money market funds | 58,158,000 | 80,576,000
Recurring | Money market funds | (Level 1) |  |
Assets: |  |
Money market funds | 58,158,000 | 80,576,000
Recurring | Money market funds | (Level 2) |  |
Assets: |  |
Money market funds | 0 | 0
Recurring | Money market funds | (Level 3) |  |
Assets: |  |
Money market funds | $ 0 | $ 0

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