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FAIR VALUE MEASUREMENTS - Schedule of Fair Value (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | --- | --- | ---
Fair value measurements |  |  |  |
Equity securities | $ 3,466 | $ 5,972 |  |
Contingent consideration | 290,499 | 282,212 | $ 294,260 | $ 288,657
Contingent consideration | (20,000) | (19,700) |  |
Fair Value, Recurring |  |  |  |
Fair value measurements |  |  |  |
Restricted Cash, Fair Value Disclosure |  | 5,747 |  |
Equity securities | 3,466 | 5,972 |  |
Non-marketable securities (2) | 622 | 796 |  |
Contingent consideration |  | 282,212 |  |
Contingent consideration | (290,499) |  |  |
Total | 496,298 | 762,357 |  |
Fair Value, Recurring | Corporate bonds |  |  |  |
Fair value measurements |  |  |  |
Estimated Fair Value | 212,791 | 206,874 |  |
Fair Value, Recurring | U.S. government agency securities |  |  |  |
Fair value measurements |  |  |  |
Estimated Fair Value | 153,947 | 140,952 |  |
Fair Value, Recurring | Asset backed securities |  |  |  |
Fair value measurements |  |  |  |
Estimated Fair Value | 68,844 | 83,339 |  |
Fair Value, Recurring | Cash and money market |  |  |  |
Fair value measurements |  |  |  |
Cash and cash equivalents, fair value | 341,013 | 595,548 |  |
Fair Value, Recurring | U.S. government agency securities |  |  |  |
Fair value measurements |  |  |  |
Cash and cash equivalents, fair value | 6,114 | 5,341 |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring |  |  |  |
Fair value measurements |  |  |  |
Restricted Cash, Fair Value Disclosure |  | 5,747 |  |
Equity securities | 3,466 | 5,972 |  |
Non-marketable securities (2) | 0 | 0 |  |
Contingent consideration |  | 0 |  |
Contingent consideration | 0 |  |  |
Total | 344,479 | 607,267 |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | Corporate bonds |  |  |  |
Fair value measurements |  |  |  |
Estimated Fair Value | 0 | 0 |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | U.S. government agency securities |  |  |  |
Fair value measurements |  |  |  |
Estimated Fair Value | 0 | 0 |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | Asset backed securities |  |  |  |
Fair value measurements |  |  |  |
Estimated Fair Value | 0 | 0 |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | Cash and money market |  |  |  |
Fair value measurements |  |  |  |
Cash and cash equivalents, fair value | 341,013 | 595,548 |  |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | U.S. government agency securities |  |  |  |
Fair value measurements |  |  |  |
Cash and cash equivalents, fair value | 0 | 0 |  |
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring |  |  |  |
Fair value measurements |  |  |  |
Restricted Cash, Fair Value Disclosure |  | 0 |  |
Equity securities | 0 | 0 |  |
Non-marketable securities (2) | 0 | 0 |  |
Contingent consideration |  | 0 |  |
Contingent consideration | 0 |  |  |
Total | 441,696 | 436,506 |  |
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | Corporate bonds |  |  |  |
Fair value measurements |  |  |  |
Estimated Fair Value | 212,791 | 206,874 |  |
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | U.S. government agency securities |  |  |  |
Fair value measurements |  |  |  |
Estimated Fair Value | 153,947 | 140,952 |  |
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | Asset backed securities |  |  |  |
Fair value measurements |  |  |  |
Estimated Fair Value | 68,844 | 83,339 |  |
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | Cash and money market |  |  |  |
Fair value measurements |  |  |  |
Cash and cash equivalents, fair value | 0 | 0 |  |
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | U.S. government agency securities |  |  |  |
Fair value measurements |  |  |  |
Cash and cash equivalents, fair value | 6,114 | 5,341 |  |
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring |  |  |  |
Fair value measurements |  |  |  |
Restricted Cash, Fair Value Disclosure |  | 0 |  |
Equity securities | 0 | 0 |  |
Non-marketable securities (2) | 622 | 796 |  |
Contingent consideration |  | 282,212 |  |
Contingent consideration | (290,499) |  |  |
Total | (289,877) | (281,416) |  |
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Corporate bonds |  |  |  |
Fair value measurements |  |  |  |
Estimated Fair Value | 0 | 0 |  |
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | U.S. government agency securities |  |  |  |
Fair value measurements |  |  |  |
Estimated Fair Value | 0 | 0 |  |
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Asset backed securities |  |  |  |
Fair value measurements |  |  |  |
Estimated Fair Value | 0 | 0 |  |
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | Cash and money market |  |  |  |
Fair value measurements |  |  |  |
Cash and cash equivalents, fair value | 0 | 0 |  |
Significant Unobservable Inputs (Level 3) | Fair Value, Recurring | U.S. government agency securities |  |  |  |
Fair value measurements |  |  |  |
Cash and cash equivalents, fair value | $ 0 | $ 0 |  |

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