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Investments (Tables) | 3 Months Ended
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Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
Schedule of Cost, Gross Unrealized Holding Gains, Gross Unrealized Holding Losses and Fair Value of Available for Sale Investments | The Company's available-for-sale investments consisted of the following (in thousands):
March 31, 2023 |  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Estimated Fair Value |
Short-term |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities |  | $ | 124,250 |  |  | $ | — |  |  | $ | (519 | ) |  | $ | 123,731 |
U.S. agency bonds |  |  | 5,000 |  |  |  | — |  |  |  | (24 | ) |  |  | 4,976 |
Certificates of deposit |  |  | 1,960 |  |  |  | — |  |  |  | (28 | ) |  |  | 1,932 |
Short-term investments |  | $ | 131,210 |  |  | $ | — |  |  | $ | (571 | ) |  | $ | 130,639 |
Long-term |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities |  | $ | 19,237 |  |  | $ | 72 |  |  | $ | — |  |  | $ | 19,309 |
Long-term investments |  | $ | 19,237 |  |  | $ | 72 |  |  | $ | — |  |  | $ | 19,309 |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |
Short-term |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities |  | $ | 135,878 |  |  | $ | — |  |  | $ | (1,094 | ) |  | $ | 134,784 |
U.S. agency bonds |  |  | 2,500 |  |  |  | — |  |  |  | (11 | ) |  |  | 2,489 |
Certificates of deposit |  |  | 2,191 |  |  |  | — |  |  |  | (32 | ) |  |  | 2,159 |
Short-term investments |  | $ | 140,569 |  |  | $ | — |  |  | $ | (1,137 | ) |  | $ | 139,432 |
Long-term |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities |  | $ | 19,360 |  |  | $ | — |  |  | $ | (126 | ) |  | $ | 19,234 |
U.S. agency bonds |  |  | 2,500 |  |  |  | — |  |  |  | (24 | ) |  |  | 2,476 |
Certificates of deposit |  |  | 245 |  |  |  | — |  |  |  | (4 | ) |  |  | 241 |
Long-term investments |  | $ | 22,105 |  |  | $ | — |  |  | $ | (154 | ) |  | $ | 21,951 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 + Details
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