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Summary of Significant Accounting Policies - Fair Value Measurements (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Assets: |  |
Assets fair value | $ 5,372 | $ 58,342
Cash equivalents | Money Market Funds |  |
Assets: |  |
Assets fair value | 4,797 | 29,305
Cash equivalents | Commercial Paper |  |
Assets: |  |
Assets fair value | 0 | 1,000
Short-term Investments | Corporate Debt Securities |  |
Assets: |  |
Assets fair value | 0 | 24,352
Short-term Investments | Asset-backed securities |  |
Assets: |  |
Assets fair value | 575 | 3,685
Level 1 |  |
Assets: |  |
Assets fair value | 4,797 | 29,305
Level 1 | Cash equivalents | Money Market Funds |  |
Assets: |  |
Assets fair value | 4,797 | 29,305
Level 2 |  |
Assets: |  |
Assets fair value | 575 | 29,037
Level 2 | Cash equivalents | Commercial Paper |  |
Assets: |  |
Assets fair value |  | 1,000
Level 2 | Short-term Investments | Corporate Debt Securities |  |
Assets: |  |
Assets fair value | 0 | 24,352
Level 2 | Short-term Investments | Asset-backed securities |  |
Assets: |  |
Assets fair value | $ 575 | $ 3,685

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