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Fair Value Measurements and Fair Value of Financial Instruments (Tables) | 6 Months Ended
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Jun. 30, 2022
Fair Value Disclosures [Abstract] |
Summary of Cash Equivalents and Short-term Investments | The following is a summary of the Company’s cash equivalents and short-term investments:
| June 30, 2022
| Amortized Cost Basis |  | Unrealized Gains |  | Unrealized Losses |  | Estimated Fair Value
| (In thousands)
Level 1: |  |  |  |  |  |  |
Money market funds | $ | 10,108 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,108 |
Level 2: |  |  |  |  |  |  |
U.S. government and agency securities | 55,150 |  |  | — |  |  | (1,008) |  |  | 54,142 |
Commercial paper | 150,364 |  |  | — |  |  | (323) |  |  | 150,041 |
Corporate bonds | 7,060 |  |  | — |  |  | (48) |  |  | 7,012 |
Total cash equivalents and short-term investments | 222,682 |  |  | — |  |  | (1,379) |  |  | 221,303 |
Less: cash equivalents | (77,342) |  |  | — |  |  | 10 |  |  | (77,332) |
Total short-term investments | $ | 145,340 |  |  | $ | — |  |  | $ | (1,369) |  |  | $ | 143,971 |
| December 31, 2021
| Amortized Cost Basis |  | Unrealized Gains |  | Unrealized Losses |  | Estimated Fair Value
| (In thousands)
Level 1: |  |  |  |  |  |  |
Money market funds | $ | 10,311 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,311 |
Level 2: |  |  |  |  |  |  |
U.S. government and agency securities | 62,268 |  |  | — |  |  | (218) |  |  | 62,050 |
Commercial paper | 177,215 |  |  | 1 |  |  | (61) |  |  | 177,155 |
Corporate bonds | 47,323 |  |  | — |  |  | (39) |  |  | 47,284 |
Total cash equivalents and short-term investments | 297,117 |  |  | 1 |  |  | (318) |  |  | 296,800 |
Less: cash equivalents | (25,808) |  |  | — |  |  | 1 |  |  | (25,807) |
Total short-term investments | $ | 271,309 |  |  | $ | 1 |  |  | $ | (317) |  |  | $ | 270,993 |

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- Definition Tabular disclosure of the components of cash, cash equivalents, and investments. + References No definition available. + Details
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