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Fair Value Measurements - Fair Value of Assets and Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Assets: |  |
Total available for sale investments | $ 81,951 | $ 88,920
Recurring basis |  |
Assets: |  |
Total included in cash and cash equivalents | 14,158 | 15,722
Total available for sale investments | 81,951 | 88,920
Total assets measured at fair value on a recurring basis | 96,109 | 104,642
Recurring basis | Certificate of deposit |  |
Assets: |  |
Total available for sale investments | 13,925 | 16,023
Recurring basis | Corporate debt securities |  |
Assets: |  |
Total available for sale investments | 32,828 | 49,535
Recurring basis | Commercial paper |  |
Assets: |  |
Total available for sale investments | 10,398 | 13,187
Recurring basis | Non U.S. government |  |
Assets: |  |
Total available for sale investments | 7,842 | 2,288
Recurring basis | U.S. treasury securities |  |
Assets: |  |
Total available for sale investments | 16,958 | 7,887
Recurring basis | Money market fund |  |
Assets: |  |
Total included in cash and cash equivalents | 14,158 | 15,722
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) |  |
Assets: |  |
Total included in cash and cash equivalents | 14,158 | 15,722
Total available for sale investments | 16,958 | 7,887
Total assets measured at fair value on a recurring basis | 31,116 | 23,609
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Certificate of deposit |  |
Assets: |  |
Total available for sale investments | 0 | 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Corporate debt securities |  |
Assets: |  |
Total available for sale investments | 0 | 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Commercial paper |  |
Assets: |  |
Total available for sale investments | 0 | 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Non U.S. government |  |
Assets: |  |
Total available for sale investments | 0 | 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | U.S. treasury securities |  |
Assets: |  |
Total available for sale investments | 16,958 | 7,887
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Money market fund |  |
Assets: |  |
Total included in cash and cash equivalents | 14,158 | 15,722
Recurring basis | Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Total included in cash and cash equivalents | 0 | 0
Total available for sale investments | 64,993 | 81,033
Total assets measured at fair value on a recurring basis | 64,993 | 81,033
Recurring basis | Significant Other Observable Inputs (Level 2) | Certificate of deposit |  |
Assets: |  |
Total available for sale investments | 13,925 | 16,023
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate debt securities |  |
Assets: |  |
Total available for sale investments | 32,828 | 49,535
Recurring basis | Significant Other Observable Inputs (Level 2) | Commercial paper |  |
Assets: |  |
Total available for sale investments | 10,398 | 13,187
Recurring basis | Significant Other Observable Inputs (Level 2) | Non U.S. government |  |
Assets: |  |
Total available for sale investments | 7,842 | 2,288
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. treasury securities |  |
Assets: |  |
Total available for sale investments | 0 | 0
Recurring basis | Significant Other Observable Inputs (Level 2) | Money market fund |  |
Assets: |  |
Total included in cash and cash equivalents | 0 | 0
Recurring basis | Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Total included in cash and cash equivalents | 0 | 0
Total available for sale investments | 0 | 0
Total assets measured at fair value on a recurring basis | 0 | 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Certificate of deposit |  |
Assets: |  |
Total available for sale investments | 0 | 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Corporate debt securities |  |
Assets: |  |
Total available for sale investments | 0 | 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Commercial paper |  |
Assets: |  |
Total available for sale investments | 0 | 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Non U.S. government |  |
Assets: |  |
Total available for sale investments |  | 0
Recurring basis | Significant Unobservable Inputs (Level 3) | U.S. treasury securities |  |
Assets: |  |
Total available for sale investments | 0 | 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Money market fund |  |
Assets: |  |
Total included in cash and cash equivalents | $ 0 | $ 0

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