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Fair Value Measurements (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Contingent earn-out obligations |  |
Fair Value Measurements |  |
Contingent earn-out obligations | $ 36,446 | $ 140,156
Reconciliation of the fair value of contingent earn-out obligations that use significant unobservable inputs (Level 3) |  |
Balance at beginning of year | 140,156 | 44,222
Issuances | 719 | 51,784
Settlements | (124,363) | (43,996)
Adjustments to fair value | 19,934 | 88,146
Balance at end of year | 36,446 | 140,156
Recurring basis | Total |  |
Fair Value Measurements |  |
Cash and cash equivalents | 860,523 | 549,939
U.S. Treasury bills | 20,661 |
Contingent earn-out obligations | 36,446 | 140,156
Reconciliation of the fair value of contingent earn-out obligations that use significant unobservable inputs (Level 3) |  |
Balance at beginning of year | 140,156 |
Balance at end of year | 36,446 | 140,156
Recurring basis | Quoted Market Prices In Active Markets for Identical Assets (Level 1) |  |
Fair Value Measurements |  |
Cash and cash equivalents | 860,523 | 549,939
Recurring basis | Significant Other Observable Inputs (Level 2) |  |
Fair Value Measurements |  |
U.S. Treasury bills | 20,661 |
Recurring basis | Significant Unobservable Inputs (Level 3) |  |
Fair Value Measurements |  |
Contingent earn-out obligations | 36,446 | 140,156
Reconciliation of the fair value of contingent earn-out obligations that use significant unobservable inputs (Level 3) |  |
Balance at beginning of year | 140,156 |
Balance at end of year | $ 36,446 | $ 140,156

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