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CASH, CASH EQUIVALENTS AND INVESTMENTS - Securities Classified as Cash, Cash Equivalents and Investments (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Cash and cash equivalents: |  |
Fair Value | $ 47,429 | $ 21,470
Short-term investments: |  |
Amortized Cost | 142,788 | 162,605
Gross Unrealized Gains | 193 | 280
Gross Unrealized Losses | (8) | (56)
Fair Value | 142,973 | 162,829
Total cash equivalents and investments, Amortized Cost | 190,217 | 184,075
Total cash equivalents and investments, Gross Unrealized Gains | 193 | 280
Total cash equivalents and investments, Gross Unrealized Losses | (8) | (56)
Total cash, cash equivalents and investments | 190,402 | 184,299
U.S. government-sponsored agency bonds |  |
Short-term investments: |  |
Amortized Cost | 53,052 | 101,892
Gross Unrealized Gains | 52 | 235
Gross Unrealized Losses | (6) | (34)
Fair Value | 53,098 | 102,093
U.S. treasury securities |  |
Short-term investments: |  |
Amortized Cost | 36,697 | 2,455
Gross Unrealized Gains | 47 | 2
Gross Unrealized Losses | (1) | 0
Fair Value | 36,743 | 2,457
Commercial paper |  |
Short-term investments: |  |
Amortized Cost | 30,738 | 49,630
Gross Unrealized Gains | 54 | 41
Gross Unrealized Losses | 0 | (17)
Fair Value | 30,792 | 49,654
Corporate bonds |  |
Short-term investments: |  |
Amortized Cost | 17,371 |
Gross Unrealized Gains | 37 |
Gross Unrealized Losses | 0 |
Fair Value | 17,408 |
Asset-backed securities |  |
Short-term investments: |  |
Amortized Cost | 2,975 | 8,628
Gross Unrealized Gains | 3 | 2
Gross Unrealized Losses | 0 | (5)
Fair Value | 2,978 | 8,625
Yankee bonds |  |
Short-term investments: |  |
Amortized Cost | 1,955 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (1) |
Fair Value | 1,954 |
Cash |  |
Cash and cash equivalents: |  |
Fair Value | 7,560 | 2,829
Money market funds |  |
Cash and cash equivalents: |  |
Fair Value | $ 39,869 | $ 18,641

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