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Available-for-Sale Securities (Tables) | 12 Months Ended
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Dec. 31, 2021
Investments Debt And Equity Securities [Abstract] |
Summary of Available-for-Sale Securities Held | The following tables summarize the available-for-sale securities held at December 31, 2021 and 2020 (in thousands):
December 31, 2021 |  | Amortized cost |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Fair Value |
Commercial paper |  | $ | 106,298 |  |  | $ | 8 |  |  | $ | (29 | ) |  | $ | 106,277 |
Corporate debt securities |  |  | 5,876 |  |  |  | — |  |  |  | (3 | ) |  |  | 5,873 |
U.S. government agency securities and treasuries |  |  | 8,062 |  |  |  | — |  |  |  | (21 | ) |  |  | 8,041 |
Total |  | $ | 120,236 |  |  | $ | 8 |  |  | $ | (53 | ) |  | $ | 120,191 |
December 31, 2020 |  | Amortized cost |  |  | Gross unrealized gains |  |  | Gross unrealized losses |  |  | Fair Value |
Commercial paper |  | $ | 40,467 |  |  | $ | 11 |  |  | $ | (1 | ) |  | $ | 40,477 |
Corporate debt securities |  |  | 18,634 |  |  |  | 4 |  |  |  | (1 | ) |  |  | 18,637 |
U.S. government agency securities and treasuries |  |  | 8,822 |  |  |  | 1 |  |  |  | — |  |  |  | 8,823 |
Total |  | $ | 67,923 |  |  | $ | 16 |  |  | $ | (2 | ) |  | $ | 67,937 |

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- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
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