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FAIR VALUE MEASUREMENTS - Available-for-Sale Investments (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Cash equivalents and short-term investments |  |
Amortized Cost | $ 425,168 | $ 281,252
Unrealized Gains | 309 | 103
Unrealized Losses | (88) |
Fair Value | $ 425,389 | $ 281,355
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Money market funds | Cash and cash equivalents |  |
Cash equivalents and short-term investments |  |
Amortized Cost | $ 161,094 | $ 129,123
Fair Value | 161,094 | 129,123
U.S. Government treasury securities | Short-term investments |  |
Cash equivalents and short-term investments |  |
Amortized Cost | 264,074 | 152,129
Unrealized Gains | 309 | 103
Unrealized Losses | (88) |
Fair Value | $ 264,295 | $ 152,232

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