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Fair Value Measurements (Details) - Recurring - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | $ 82,149 | $ 115,436
Liabilities, Fair Value Disclosure [Abstract] |  |
Liabilities, fair value | 1,088 | 698
Money market funds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 34,524 | 71,175
Commercial paper |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 33,355 | 31,935
U.S. government-sponsored agency bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 10,755 |
Corporate bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 2,511 | 7,022
Asset-backed securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 1,004 | 5,304
Derivative liability for exit fees |  |
Liabilities, Fair Value Disclosure [Abstract] |  |
Liabilities, fair value | 1,088 | 698
Level 1 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 34,524 | 71,175
Liabilities, Fair Value Disclosure [Abstract] |  |
Liabilities, fair value | 0 | 0
Level 1 | Money market funds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 34,524 | 71,175
Level 1 | Commercial paper |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 0 | 0
Level 1 | U.S. government-sponsored agency bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 0 |
Level 1 | Corporate bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 0 | 0
Level 1 | Asset-backed securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 0 | 0
Level 1 | Derivative liability for exit fees |  |
Liabilities, Fair Value Disclosure [Abstract] |  |
Liabilities, fair value | 0 | 0
Level 2 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 47,625 | 44,261
Liabilities, Fair Value Disclosure [Abstract] |  |
Liabilities, fair value | 0 | 0
Level 2 | Money market funds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 0 | 0
Level 2 | Commercial paper |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 33,355 | 31,935
Level 2 | U.S. government-sponsored agency bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 10,755 |
Level 2 | Corporate bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 2,511 | 7,022
Level 2 | Asset-backed securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 1,004 | 5,304
Level 2 | Derivative liability for exit fees |  |
Liabilities, Fair Value Disclosure [Abstract] |  |
Liabilities, fair value | 0 | 0
Level 3 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 0 | 0
Liabilities, Fair Value Disclosure [Abstract] |  |
Liabilities, fair value | 1,088 | 698
Level 3 | Money market funds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 0 | 0
Level 3 | Commercial paper |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 0 | 0
Level 3 | U.S. government-sponsored agency bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 0 |
Level 3 | Corporate bonds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 0 | 0
Level 3 | Asset-backed securities |  |
Assets, Fair Value Disclosure [Abstract] |  |
Assets, fair value | 0 | 0
Level 3 | Derivative liability for exit fees |  |
Liabilities, Fair Value Disclosure [Abstract] |  |
Liabilities, fair value | $ 1,088 | $ 698

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