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FINANCIAL INSTRUMENTS - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Assets |  |
Cash and cash equivalents | $ 77,982 | $ 179,911
Short-term restricted cash | 690 | 300
Long-term restricted cash | 1,532 | 2,422
Total assets measured at fair value | 473,369 | 634,138
Liabilities |  |
Contingent consideration | 20,650 | 19,550
Total liabilities measured at fair value | 20,650 | 19,550
Investments: |  |
Assets |  |
Investments: | 393,165 | 451,505
Commercial paper |  |
Assets |  |
Investments: | 0 | 9,947
Corporate debt securities |  |
Assets |  |
Investments: | 68,178 | 88,579
U.S. government & agency securities |  |
Assets |  |
Investments: | 324,987 | 352,979
Level 1 |  |
Assets |  |
Cash and cash equivalents | 58,703 | 70,172
Short-term restricted cash | 690 | 300
Long-term restricted cash | 1,532 | 2,422
Total assets measured at fair value | 60,925 | 72,894
Liabilities |  |
Contingent consideration | 0 | 0
Total liabilities measured at fair value | 0 | 0
Level 1 | Investments: |  |
Assets |  |
Investments: | 0 | 0
Level 1 | Commercial paper |  |
Assets |  |
Investments: | 0 | 0
Level 1 | Corporate debt securities |  |
Assets |  |
Investments: | 0 | 0
Level 1 | U.S. government & agency securities |  |
Assets |  |
Investments: | 0 | 0
Level 2 |  |
Assets |  |
Cash and cash equivalents | 19,279 | 109,739
Short-term restricted cash | 0 | 0
Long-term restricted cash | 0 | 0
Total assets measured at fair value | 412,444 | 561,244
Liabilities |  |
Contingent consideration | 0 | 0
Total liabilities measured at fair value | 0 | 0
Level 2 | Investments: |  |
Assets |  |
Investments: | 393,165 | 451,505
Level 2 | Commercial paper |  |
Assets |  |
Investments: | 0 | 9,947
Level 2 | Corporate debt securities |  |
Assets |  |
Investments: | 68,178 | 88,579
Level 2 | U.S. government & agency securities |  |
Assets |  |
Investments: | 324,987 | 352,979
Level 3 |  |
Assets |  |
Cash and cash equivalents | 0 | 0
Short-term restricted cash | 0 | 0
Long-term restricted cash | 0 | 0
Total assets measured at fair value | 0 | 0
Liabilities |  |
Contingent consideration | 20,650 | 19,550
Total liabilities measured at fair value | 20,650 | 19,550
Level 3 | Investments: |  |
Assets |  |
Investments: | 0 | 0
Level 3 | Commercial paper |  |
Assets |  |
Investments: | 0 | 0
Level 3 | Corporate debt securities |  |
Assets |  |
Investments: | 0 | 0
Level 3 | U.S. government & agency securities |  |
Assets |  |
Investments: | $ 0 | $ 0

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