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v3.22.1

Short-term Investments (Tables) | 3 Months Ended
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Mar. 31, 2022
Short Term Investments [Abstract] |
Summary of Short-term Investments | The following is a summary of our short-term investments (in thousands):
|  | March 31, 2022 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Estimated |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
U.S. treasury bills and government agency obligations |  | $ | 30,016 |  |  | $ | — |  |  | $ | (7 | ) |  | $ | 30,009 |
U.S. corporate debt securities |  |  | 3,502 |  |  |  | — |  |  |  | (2 | ) |  |  | 3,500 |
Foreign commercial paper |  |  | 21,490 |  |  |  | — |  |  |  | — |  |  |  | 21,490 |
Total |  | $ | 55,008 |  |  | $ | — |  |  | $ | (9 | ) |  | $ | 54,999 |
|  | December 31, 2021 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Estimated |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
U.S. corporate debt securities |  | $ | 15,009 |  |  | $ | — |  |  | $ | (3 | ) |  | $ | 15,006 |
Foreign corporate debt securities |  |  | 10,551 |  |  |  | — |  |  |  | (3 | ) |  |  | 10,548 |
U.S. commercial paper |  |  | 5,998 |  |  |  | — |  |  |  | — |  |  |  | 5,998 |
Foreign commercial paper |  |  | 35,487 |  |  |  | — |  |  |  | — |  |  |  | 35,487 |
Total |  | $ | 67,045 |  |  | $ | — |  |  | $ | (6 | ) |  | $ | 67,039 |

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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 http://asc.fasb.org/topic&trid=2196928 + Details
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- References No definition available. + Details
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