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Fair Value Measurements and Fair Value of Financial Instruments - Schedule of Financial Instruments Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Assets: |  |
Investments, Fair Value | $ 204,102 |
Fair Value, Recurring |  |
Assets: |  |
Cash and cash equivalents, Amortized Cost | 68,986 |
Cash and cash equivalents, Gross Unrealized Losses | (1) |
Cash and cash equivalents, Fair Value | 68,985 |
Investments, Amortized Cost | 204,342 |
Investments, Gross Unrealized Losses | (240) |
Investments, Fair Value | 204,102 |
Total assets measured at fair value, Amortized Cost | 273,328 | $ 386,200
Total assets measured at fair value, Gross Unrealized Losses | (241) |
Total assets measured at fair value, Fair Value | 273,087 | 386,200
Fair Value, Recurring | Cash | Level 1 |  |
Assets: |  |
Cash and cash equivalents, Amortized Cost | 27,834 | 4,788
Cash and cash equivalents, Fair Value | 27,834 | 4,788
Fair Value, Recurring | Money Market Funds | Level 1 |  |
Assets: |  |
Cash and cash equivalents, Amortized Cost | 17,555 | 381,412
Cash and cash equivalents, Fair Value | 17,555 | $ 381,412
Fair Value, Recurring | Commercial Paper | Level 2 |  |
Assets: |  |
Cash and cash equivalents, Amortized Cost | 23,597 |
Cash and cash equivalents, Gross Unrealized Losses | (1) |
Cash and cash equivalents, Fair Value | 23,596 |
Fair Value, Recurring | U.S. Treasury Securities | Level 1 |  |
Assets: |  |
Investments, Amortized Cost | 45,290 |
Investments, Gross Unrealized Losses | (73) |
Investments, Fair Value | 45,217 |
Fair Value, Recurring | Commercial paper | Level 2 |  |
Assets: |  |
Investments, Amortized Cost | 61,941 |
Investments, Gross Unrealized Losses | (22) |
Investments, Fair Value | 61,919 |
Fair Value, Recurring | Corporate Debt | Level 2 |  |
Assets: |  |
Investments, Amortized Cost | 58,498 |
Investments, Gross Unrealized Losses | (74) |
Investments, Fair Value | 58,424 |
Fair Value, Recurring | Asset backed securities | Level 2 |  |
Assets: |  |
Investments, Amortized Cost | 13,899 |
Investments, Gross Unrealized Losses | (25) |
Investments, Fair Value | 13,874 |
Fair Value, Recurring | U.S. Government Agency Securities | Level 2 |  |
Assets: |  |
Investments, Amortized Cost | 24,714 |
Investments, Gross Unrealized Losses | (46) |
Investments, Fair Value | $ 24,668 |

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