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Cash and Cash Equivalents and Investments (Tables) | 6 Months Ended
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Jun. 30, 2022
Cash and Cash Equivalents and Investments [Abstract] |
Schedule of Cash, Cash Equivalents and Short-term Investments [Table Text Block] |
|  | As of June 30, 2022
|  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
|  | (in thousands)
Cash and cash equivalents |  | $ | 21,450 |  |  | $ | — |  |  | $ | — |  |  | $ | 21,450 |
Securities maturing within one year: |  |  |  |  |  |  |  |
U.S. treasury securities |  | 30,419 |  |  | — |  |  | (89) |  |  | 30,330 |
Corporate debt securities |  | 10,249 |  |  | — |  |  | (61) |  |  | 10,188 |
Total short-term investments |  | $ | 40,668 |  |  | $ | — |  |  | $ | (150) |  |  | $ | 40,518 |
Total cash and cash equivalents and investments |  | $ | 62,118 |  |  | $ | — |  |  | $ | (150) |  |  | $ | 61,968 |
|  | As of December 31, 2021
|  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
|  |  |  | (in thousands) |  |
Cash and cash equivalents |  | $ | 64,066 |  |  | $ | — |  |  | $ | (1) |  |  | $ | 64,065 |
Securities maturing within one year: |  |  |  |  |  |  |  |
U.S. treasury securities |  | 7,562 |  |  | — |  |  | (1) |  |  | 7,561 |
Corporate debt securities |  | 15,125 |  |  | — |  |  | (8) |  |  | 15,117 |
Total short-term investments |  | $ | 22,687 |  |  | $ | — |  |  | $ | (9) |  |  | $ | 22,678 |
Total cash and cash equivalents and investments |  | $ | 86,753 |  |  | $ | — |  |  | $ | (10) |  |  | $ | 86,743 |

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- Definition Cash and Cash Equivalents and Investments [Abstract] + References No definition available. + Details
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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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