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Marketable Securities (Tables) | 9 Months Ended
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Sep. 30, 2022
Marketable Securities [Abstract] |
Summary of Marketable securities | Marketable securities consisted of the following as of September 30, 2022 and December 31, 2021 (in thousands):
|  | September 30, 2022 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
Available-for-sale securities, short-term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate debt securities |  | $ | 16,531 |  |  | $ | — |  |  | $ | (369 | ) |  | $ | 16,162 |
Asset-backed securities |  |  | 3,008 |  |  |  | — |  |  |  | (120 | ) |  |  | 2,888 |
U.S. treasury securities |  |  | 24,080 |  |  |  | — |  |  |  | (476 | ) |  |  | 23,604 |
Total available-for-sale securities, short-term |  |  | 43,619 |  |  |  | — |  |  |  | (965 | ) |  |  | 42,654 |
Total available-for-sale securities |  | $ | 43,619 |  |  | $ | — |  |  | $ | (965 | ) |  | $ | 42,654 |
|  | December 31, 2021 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
Available-for-sale securities, short-term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  | $ | 47,939 |  |  | $ | — |  |  | $ | — |  |  | $ | 47,939 |
Corporate debt securities |  |  | 7,992 |  |  |  | — |  |  |  | (11 | ) |  |  | 7,981 |
Asset-backed securities |  |  | 16,177 |  |  |  | — |  |  |  | (22 | ) |  |  | 16,155 |
Total available-for-sale securities, short-term |  |  | 72,108 |  |  |  | — |  |  |  | (33 | ) |  |  | 72,075 |
Available-for-sale securities, long-term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate debt securities |  |  | 16,816 |  |  |  | — |  |  |  | (103 | ) |  |  | 16,713 |
Asset-backed securities |  |  | 3,013 |  |  |  | — |  |  |  | (25 | ) |  |  | 2,988 |
U.S. treasury securities |  |  | 11,988 |  |  |  | — |  |  |  | (70 | ) |  |  | 11,918 |
Total available-for-sale securities, long-term |  |  | 31,817 |  |  |  | — |  |  |  | (198 | ) |  |  | 31,619 |
Total available-for-sale securities |  | $ | 103,925 |  |  | $ | — |  |  | $ | (231 | ) |  | $ | 103,694 |
As of September 30, 2022, the Company’s available-for-sale securities were all classified as short-term and mature in one year or less. Certain of the Company’s available-for-sale marketable securities that were in an unrealized loss position as of September 30, 2022 have been in a loss position for approximately twelve months; however unrealized losses on available-for-sale securities as of September 30, 2022 were not significant and were primarily due to changes in interest rates, including market credit spreads, and not due to increased credit risks associated with specific securities. Accordingly, no other-than-temporary impairment was recorded for the three and nine months ended September 30, 2022. The Company does not intend to sell these securities and it is not more likely than not that the Company will be required to sell the investments before recovery of their amortized cost bases, which may be at maturity.

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