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v3.23.1

Fair Value Measurement - Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022
--- | --- | --- | ---
Assets: |  |  |
Money market funds | $ 202,824 | $ 213,667 | $ 293,419
Available-for-sale securities: | 20,462 | 22,279 |
Recurring |  |  |
Assets: |  |  |
Total assets at fair value on a recurring basis | 120,785 | 22,496 |
Money market funds | Recurring |  |  |
Assets: |  |  |
Money market funds | 100,323 | 217 |
Tax-exempt municipal securities |  |  |
Assets: |  |  |
Available-for-sale securities: | 14,395 | 15,347 |
Tax-exempt municipal securities | Recurring |  |  |
Assets: |  |  |
Available-for-sale securities: | 14,395 | 15,347 |
Corporate debt securities |  |  |
Assets: |  |  |
Available-for-sale securities: | 6,067 | 6,932 |
Corporate debt securities | Recurring |  |  |
Assets: |  |  |
Available-for-sale securities: | 6,067 | 6,932 |
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) | Recurring |  |  |
Assets: |  |  |
Total assets at fair value on a recurring basis | 100,323 | 217 |
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) | Money market funds | Recurring |  |  |
Assets: |  |  |
Money market funds | 100,323 | 217 |
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) | Tax-exempt municipal securities | Recurring |  |  |
Assets: |  |  |
Available-for-sale securities: | 0 | 0 |
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) | Corporate debt securities | Recurring |  |  |
Assets: |  |  |
Available-for-sale securities: | 0 | 0 |
Significant Other Observable Inputs (Level 2) | Recurring |  |  |
Assets: |  |  |
Total assets at fair value on a recurring basis | 20,462 | 22,279 |
Significant Other Observable Inputs (Level 2) | Money market funds | Recurring |  |  |
Assets: |  |  |
Money market funds | 0 | 0 |
Significant Other Observable Inputs (Level 2) | Tax-exempt municipal securities | Recurring |  |  |
Assets: |  |  |
Available-for-sale securities: | 14,395 | 15,347 |
Significant Other Observable Inputs (Level 2) | Corporate debt securities | Recurring |  |  |
Assets: |  |  |
Available-for-sale securities: | 6,067 | 6,932 |
Significant Unobservable Inputs (Level 3) | Recurring |  |  |
Assets: |  |  |
Total assets at fair value on a recurring basis | 0 | 0 |
Significant Unobservable Inputs (Level 3) | Money market funds | Recurring |  |  |
Assets: |  |  |
Money market funds | 0 | 0 |
Significant Unobservable Inputs (Level 3) | Tax-exempt municipal securities | Recurring |  |  |
Assets: |  |  |
Available-for-sale securities: | 0 | 0 |
Significant Unobservable Inputs (Level 3) | Corporate debt securities | Recurring |  |  |
Assets: |  |  |
Available-for-sale securities: | $ 0 | $ 0 |

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