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MARKETABLE SECURITIES - Schedule of Available For Sale Securities (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Available-for-sale securities |  |
Amortized Cost | $ 320,883 | $ 243,649
Gains in Accumulated Other Comprehensive Income (Loss) | 117 | 406
Losses in Accumulated Other Comprehensive Income (Loss) | (850) | (352)
Estimated Fair Value | 320,150 | 243,703
Cash equivalents |  |
Available-for-sale securities |  |
Amortized Cost | 18,132 | 75,278
Gains in Accumulated Other Comprehensive Income (Loss) | 0 | 0
Losses in Accumulated Other Comprehensive Income (Loss) | (2) | 0
Estimated Fair Value | 18,130 | 75,278
Marketable securities |  |
Available-for-sale securities |  |
Amortized Cost | 302,751 | 168,371
Gains in Accumulated Other Comprehensive Income (Loss) | 117 | 406
Losses in Accumulated Other Comprehensive Income (Loss) | (848) | (352)
Estimated Fair Value | 302,020 | 168,425
Commercial paper | Cash equivalents |  |
Available-for-sale securities |  |
Amortized Cost |  | 72,243
Gains in Accumulated Other Comprehensive Income (Loss) |  | 0
Losses in Accumulated Other Comprehensive Income (Loss) |  | 0
Estimated Fair Value |  | 72,243
Commercial paper | Marketable securities |  |
Available-for-sale securities |  |
Amortized Cost | 8,712 | 20,984
Gains in Accumulated Other Comprehensive Income (Loss) | 0 | 0
Losses in Accumulated Other Comprehensive Income (Loss) | 0 | 0
Estimated Fair Value | 8,712 | 20,984
U.S. government agency securities | Cash equivalents |  |
Available-for-sale securities |  |
Amortized Cost | 18,132 | 3,035
Gains in Accumulated Other Comprehensive Income (Loss) | 0 | 0
Losses in Accumulated Other Comprehensive Income (Loss) | (2) | 0
Estimated Fair Value | 18,130 | 3,035
U.S. government agency securities | Marketable securities |  |
Available-for-sale securities |  |
Amortized Cost | 81,779 | 56,594
Gains in Accumulated Other Comprehensive Income (Loss) | 24 | 166
Losses in Accumulated Other Comprehensive Income (Loss) | (90) | (44)
Estimated Fair Value | 81,713 | 56,716
Corporate bonds | Marketable securities |  |
Available-for-sale securities |  |
Amortized Cost | 141,211 | 55,712
Gains in Accumulated Other Comprehensive Income (Loss) | 76 | 175
Losses in Accumulated Other Comprehensive Income (Loss) | (442) | (59)
Estimated Fair Value | 140,845 | 55,828
Asset backed securities | Marketable securities |  |
Available-for-sale securities |  |
Amortized Cost | 71,049 | 35,081
Gains in Accumulated Other Comprehensive Income (Loss) | 17 | 65
Losses in Accumulated Other Comprehensive Income (Loss) | (316) | (249)
Estimated Fair Value | $ 70,750 | $ 34,897

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