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CASH EQUIVALENTS AND MARKETABLE SECURITIES - (Tables) | 3 Months Ended
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Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract] |
Schedule of Cash Equivalents and Marketable Securities | The table below summarizes the Company’s cash equivalents and marketable securities (in thousands):
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
March 31, 2024 |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |
Money market funds | $ | 8,956 |  |  | $ | — |  |  | $ | — |  |  | $ | 8,956 |
Total cash equivalents | 8,956 |  |  | — |  |  | — |  |  | 8,956 |
December 31, 2023 |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |
Money market funds | $ | 2,508 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,508 |
Total | 2,508 |  |  | — |  |  | — |  |  | 2,508 |
Marketable securities: |  |  |  |  |  |  |
U.S. government-sponsored entity debt securities | 22,347 |  |  | 219 |  |  | — |  |  | 22,566 |
Commercial paper securities | 2,825 |  |  | 2 |  |  | (1) |  |  | 2,826 |
Corporate debt securities | 1,399 |  |  | 6 |  |  | — |  |  | 1,405 |
Asset-backed securities | 2,368 |  |  | 9 |  |  | — |  |  | 2,377 |
U.S. treasury bills | 5,599 |  |  | — |  |  | (6) |  |  | 5,593 |
Certificates of deposit | 1,026 |  |  | 5 |  |  | — |  |  | 1,031 |
Total | 35,564 |  |  | 241 |  |  | (7) |  |  | 35,798 |
Total cash equivalents and marketable securities | $ | 38,072 |  |  | $ | 241 |  |  | $ | (7) |  |  | $ | 38,306 |
Schedule of Fair Value of Marketable Securities by Contractual Maturity | The fair value of marketable securities by contractual maturity were as follows (in thousands):
|  |  | December 31, 2023
Maturing in one year or less |  |  | $ | 10,855 |
Maturing after one year through five years |  |  | 24,943 |
Total |  |  | $ | 35,798 |

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