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FINANCIAL INSTRUMENTS - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Aug. 02, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Assets |  |  |
Total cash and cash equivalents | $ 179,911 |  | $ 325,089
Total investments | 451,505 |  | 447,229
Short-term restricted cash | 300 |  | 300
Long-term restricted cash | 2,422 |  | 2,922
Total assets measured at fair value | 634,138 |  | 775,540
Liabilities |  |  |
Total liabilities measured at fair value | 19,550 |  | 172,094
Omniome, Inc |  |  |
Liabilities |  |  |
Contingent consideration | 0 |  | 172,094
Apton |  |  |
Liabilities |  |  |
Contingent consideration | 19,550 | $ 18,500 | 0
Cash and money market funds |  |  |
Assets |  |  |
Total cash and cash equivalents | 70,172 |  | 137,636
Commercial paper |  |  |
Assets |  |  |
Total cash and cash equivalents | 0 |  | 166,453
U.S. government & agency securities |  |  |
Assets |  |  |
Total cash and cash equivalents | 109,739 |  | 21,000
Commercial paper |  |  |
Assets |  |  |
Total investments | 9,947 |  | 127,302
Corporate debt securities |  |  |
Assets |  |  |
Total investments | 88,579 |  | 49,491
U.S. government & agency securities |  |  |
Assets |  |  |
Total investments | 352,979 |  | 270,436
Level 1 |  |  |
Assets |  |  |
Total cash and cash equivalents | 70,172 |  | 137,636
Total investments | 0 |  | 0
Short-term restricted cash | 300 |  | 300
Long-term restricted cash | 2,422 |  | 2,922
Total assets measured at fair value | 72,894 |  | 140,858
Liabilities |  |  |
Total liabilities measured at fair value | 0 |  | 0
Level 1 | Omniome, Inc |  |  |
Liabilities |  |  |
Contingent consideration | 0 |  | 0
Level 1 | Apton |  |  |
Liabilities |  |  |
Contingent consideration | 0 |  | 0
Level 1 | Cash and money market funds |  |  |
Assets |  |  |
Total cash and cash equivalents | 70,172 |  | 137,636
Level 1 | Commercial paper |  |  |
Assets |  |  |
Total cash and cash equivalents | 0 |  | 0
Level 1 | U.S. government & agency securities |  |  |
Assets |  |  |
Total cash and cash equivalents | 0 |  | 0
Level 1 | Commercial paper |  |  |
Assets |  |  |
Total investments | 0 |  | 0
Level 1 | Corporate debt securities |  |  |
Assets |  |  |
Total investments | 0 |  | 0
Level 1 | U.S. government & agency securities |  |  |
Assets |  |  |
Total investments | 0 |  | 0
Level 2 |  |  |
Assets |  |  |
Total cash and cash equivalents | 109,739 |  | 187,453
Total investments | 451,505 |  | 447,229
Short-term restricted cash | 0 |  | 0
Long-term restricted cash | 0 |  | 0
Total assets measured at fair value | 561,244 |  | 634,682
Liabilities |  |  |
Total liabilities measured at fair value | 0 |  | 0
Level 2 | Omniome, Inc |  |  |
Liabilities |  |  |
Contingent consideration | 0 |  | 0
Level 2 | Apton |  |  |
Liabilities |  |  |
Contingent consideration | 0 |  | 0
Level 2 | Cash and money market funds |  |  |
Assets |  |  |
Total cash and cash equivalents | 0 |  | 0
Level 2 | Commercial paper |  |  |
Assets |  |  |
Total cash and cash equivalents | 0 |  | 166,453
Level 2 | U.S. government & agency securities |  |  |
Assets |  |  |
Total cash and cash equivalents | 109,739 |  | 21,000
Level 2 | Commercial paper |  |  |
Assets |  |  |
Total investments | 9,947 |  | 127,302
Level 2 | Corporate debt securities |  |  |
Assets |  |  |
Total investments | 88,579 |  | 49,491
Level 2 | U.S. government & agency securities |  |  |
Assets |  |  |
Total investments | 352,979 |  | 270,436
Level 3 |  |  |
Assets |  |  |
Total cash and cash equivalents | 0 |  | 0
Total investments | 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 | 19,550 |  | 172,094
Total liabilities measured at fair value | 19,550 |  | 172,094
Level 3 | Omniome, Inc |  |  |
Liabilities |  |  |
Contingent consideration | 0 |  | 172,094
Level 3 | Apton |  |  |
Liabilities |  |  |
Contingent consideration | 19,550 |  | 0
Level 3 | Cash and money market funds |  |  |
Assets |  |  |
Total cash and cash equivalents | 0 |  | 0
Level 3 | Commercial paper |  |  |
Assets |  |  |
Total cash and cash equivalents | 0 |  | 0
Level 3 | U.S. government & agency securities |  |  |
Assets |  |  |
Total cash and cash equivalents | 0 |  | 0
Level 3 | Commercial paper |  |  |
Assets |  |  |
Total investments | 0 |  | 0
Level 3 | Corporate debt securities |  |  |
Assets |  |  |
Total investments | 0 |  | 0
Level 3 | U.S. government & agency securities |  |  |
Assets |  |  |
Total investments | $ 0 |  | $ 0

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