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Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Assets carried at fair value |  |
Fair value | $ 331,077 | $ 187,892
U.S. Government bonds and notes |  |
Assets carried at fair value |  |
Fair value | 194,428 | 96,371
Corporate bonds, commercial paper and notes |  |
Assets carried at fair value |  |
Fair value | 136,649 | 91,521
Recurring basis |  |
Assets carried at fair value |  |
Total assets carried at fair value | 337,358 | 218,489
Liabilities carried at fair value |  |
Earn-out consideration related to PLDA acquisition | 12,500 | 14,800
Total liabilities carried at fair value | 12,500 | 14,800
Recurring basis | Money market funds |  |
Assets carried at fair value |  |
Fair value | 3,790 | 15,763
Recurring basis | U.S. Government bonds and notes |  |
Assets carried at fair value |  |
Fair value | 196,919 | 96,371
Recurring basis | Corporate bonds, commercial paper and notes |  |
Assets carried at fair value |  |
Fair value | 136,649 | 106,355
Recurring basis | Quoted market prices in active markets (Level 1) |  |
Assets carried at fair value |  |
Total assets carried at fair value | 3,790 | 15,763
Liabilities carried at fair value |  |
Earn-out consideration related to PLDA acquisition | 0 | 0
Total liabilities carried at fair value | 0 | 0
Recurring basis | Quoted market prices in active markets (Level 1) | Money market funds |  |
Assets carried at fair value |  |
Fair value | 3,790 | 15,763
Recurring basis | Quoted market prices in active markets (Level 1) | U.S. Government bonds and notes |  |
Assets carried at fair value |  |
Fair value | 0 | 0
Recurring basis | Quoted market prices in active markets (Level 1) | Corporate bonds, commercial paper and notes |  |
Assets carried at fair value |  |
Fair value | 0 | 0
Recurring basis | Significant other observable inputs (Level 2) |  |
Assets carried at fair value |  |
Total assets carried at fair value | 333,568 | 202,726
Liabilities carried at fair value |  |
Earn-out consideration related to PLDA acquisition | 0 | 0
Total liabilities carried at fair value | 0 | 0
Recurring basis | Significant other observable inputs (Level 2) | Money market funds |  |
Assets carried at fair value |  |
Fair value | 0 | 0
Recurring basis | Significant other observable inputs (Level 2) | U.S. Government bonds and notes |  |
Assets carried at fair value |  |
Fair value | 196,919 | 96,371
Recurring basis | Significant other observable inputs (Level 2) | Corporate bonds, commercial paper and notes |  |
Assets carried at fair value |  |
Fair value | 136,649 | 106,355
Recurring basis | Significant unobservable inputs (Level 3) |  |
Assets carried at fair value |  |
Total assets carried at fair value | 0 | 0
Liabilities carried at fair value |  |
Earn-out consideration related to PLDA acquisition | 12,500 | 14,800
Total liabilities carried at fair value | 12,500 | 14,800
Recurring basis | Significant unobservable inputs (Level 3) | Money market funds |  |
Assets carried at fair value |  |
Fair value | 0 | 0
Recurring basis | Significant unobservable inputs (Level 3) | U.S. Government bonds and notes |  |
Assets carried at fair value |  |
Fair value | 0 | 0
Recurring basis | Significant unobservable inputs (Level 3) | Corporate bonds, commercial paper and notes |  |
Assets carried at fair value |  |
Fair value | $ 0 | $ 0

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