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Financial Instruments (Tables) | 6 Months Ended
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Jun. 30, 2023
Fair Value Disclosures [Abstract] |
Summary of Money Market Funds, U.S. Government Agency Securities and Corporate Debt Securities by Significant Investment Category | The following tables show the Company’s Money Market Funds, U.S. Treasury securities, U.S. government agency securities and corporate debt securities by significant investment category as of June 30, 2023 and December 31, 2022 (in thousands):
| As of June 30, 2023
| Adjusted Cost |  | Unrealized Gains |  | Unrealized Losses |  | Market Value
Level 1: |  |  |  |  |  |  |
Money Market Funds | $ | 47,810 |  |  | $ | — |  |  | $ | — |  |  | $ | 47,810 |
Level 2: |  |  |  |  |  |  |
U.S. Treasury securities included in cash and cash equivalents and short-term investments | 18,162 |  |  | — |  |  | (57) |  |  | 18,105 |
U.S. government agency securities included in cash and cash equivalents and short-term investments | 98,749 |  |  | — |  |  | (595) |  |  | 98,154 |
Corporate debt securities included in cash and cash equivalents and short-term investments | 385,538 |  |  | 4 |  |  | (1,593) |  |  | 383,949 |
Total financial assets | $ | 550,259 |  |  | $ | 4 |  |  | $ | (2,245) |  |  | $ | 548,018 |
| As of December 31, 2022
| Adjusted Cost |  | Unrealized Gains |  | Unrealized Losses |  | Market Value
Level 1: |  |  |  |  |  |  |
Money Market Funds | $ | 28,312 |  |  | $ | — |  |  | $ | — |  |  | $ | 28,312 |
Level 2: |  |  |  |  |  |  |
U.S. Treasury securities included in cash and cash equivalents and short-term investments | 4,446 |  |  | — |  |  | (5) |  |  | 4,441 |
U.S. government agency securities included in short-term investments | 28,746 |  |  | — |  |  | (111) |  |  | 28,635 |
Corporate debt securities included in cash and cash equivalents and short-term investments | 266,267 |  |  | 45 |  |  | (1,887) |  |  | 264,425 |
Total financial assets | $ | 327,771 |  |  | $ | 45 |  |  | $ | (2,003) |  |  | $ | 325,813 |

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