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Intangible Assets and Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Finite-Lived Intangible Assets, Net | The components of intangible assets were as follows (in thousands, except for useful life):
|  |  | Balance at December 31, 2024 |  | Balance at December 31, 2023
| Weighted- Average Useful Lives (Years) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Finite-lived intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |
Licensed IP | 12.5 |  | $ | 271,000 |  | $ | 184,854 |  | $ | 86,146 |  | $ | 271,000 |  | $ | 163,318 |  | $ | 107,682
Capitalized milestone payments | 11.9 |  | $ | 29,500 |  | $ | 2,820 |  | $ | 26,680 |  | $ | 17,000 |  | $ | 1,137 |  | $ | 15,863
Other | 2.0 |  | $ | 1,400 |  | $ | 423 |  | $ | 977 |  | $ | — |  | $ | — |  | $ | —
Schedule of Estimated Aggregate Amortization Expense | Estimated aggregate amortization expense based on the current carrying value of amortizable intangible assets will be as follows for the years ending December 31 (in thousands):
| 2025 |  | 2026 |  | 2027 |  | 2028 |  | 2029 |  | Thereafter
Amortization expense | $ | 24,767 |  | $ | 24,359 |  | $ | 24,067 |  | $ | 24,067 |  | $ | 2,531 |  | $ | 14,012

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
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