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Cash Equivalents and Marketable Securities (Tables) | 9 Months Ended
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Sep. 30, 2023
Cash and Cash Equivalents [Abstract] |
Schedule of Cash Equivalents and Marketable Securities | Cash equivalents and marketable securities consisted of the following:
|  | September 30, 2023 |
|  | Amortized Cost Basis |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
|  | (in thousands) |
Money market funds |  | $ | 54,078 |  |  | $ | - |  |  | $ | - |  |  | $ | 54,078 |
Commercial paper |  |  | 78,348 |  |  |  | - |  |  |  | - |  |  |  | 78,348 |
Corporate debt securities |  |  | 54,501 |  |  |  | 4 |  |  |  | (11 | ) |  |  | 54,494 |
Asset-based securities |  |  | 27,743 |  |  |  | 8 |  |  |  | (1 | ) |  |  | 27,750 |
U.S. government securities |  |  | 104,309 |  |  |  | 7 |  |  |  | - |  |  |  | 104,316 |
U.S. agency securities |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total |  |  | 318,979 |  |  |  | 19 |  |  |  | (12 | ) |  |  | 318,986 |
Less amounts classified as cash equivalents |  |  | (79,711 | ) |  |  | (2 | ) |  |  | 1 |  |  |  | (79,712 | )
Total marketable securities |  | $ | 239,268 |  |  | $ | 17 |  |  | $ | (11 | ) |  | $ | 239,274 |
|  | December 31, 2022 |
|  | Amortized Cost Basis |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
|  | (in thousands) |
Money market funds |  | $ | 36,486 |  |  | $ | - |  |  | $ | - |  |  | $ | 36,486 |
Commercial paper |  |  | 87,140 |  |  |  | - |  |  |  | - |  |  |  | 87,140 |
Corporate debt securities |  |  | 36,554 |  |  |  | 2 |  |  |  | (127 | ) |  |  | 36,429 |
Asset-based securities |  |  | 14,026 |  |  |  | - |  |  |  | (10 | ) |  |  | 14,016 |
U.S. government securities |  |  | 91,619 |  |  |  | 8 |  |  |  | (376 | ) |  |  | 91,251 |
U.S. agency securities |  |  | 16,646 |  |  |  | - |  |  |  | (39 | ) |  |  | 16,607 |
Supranational debt securities |  |  | 16,555 |  |  |  | - |  |  |  | (74 | ) |  |  | 16,481 |
Total |  |  | 299,026 |  |  |  | 10 |  |  |  | (626 | ) |  |  | 298,410 |
Less amounts classified as cash equivalents |  |  | (43,318 | ) |  |  | (2 | ) |  |  | - |  |  |  | (43,320 | )
Total marketable securities |  | $ | 255,708 |  |  | $ | 8 |  |  | $ | (626 | ) |  | $ | 255,090 |

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