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Acquired Intangible Assets | 3 Months Ended
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Mar. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Acquired Intangible Assets | Note D – Acquired Intangible Assets Acquired intangible assets consisted of the following as of March 31, 2025 and December 31, 2024 (in thousands):
|  | As of March 31, 2025 |
|  | Amortization period (years) |  | Gross carrying amount |  |  | Accumulated amortization |  |  | Net carrying amount |
Intellectual property |  | 7-15 years |  | $ | 16,841 |  |  | $ | (15,607 | ) |  | $ | 1,234 |
Trademarks |  | 4-4.5 years |  |  | 882 |  |  |  | (882 | ) |  |  | — |
Other |  | 2-7 years |  |  | 582 |  |  |  | (582 | ) |  |  | — |
In-process research and development |  | Indefinite |  |  | 2,057 |  |  |  | — |  |  |  | 2,057 |
Total |  |  |  | $ | 20,362 |  |  | $ | (17,071 | ) |  | $ | 3,291 |
|  | As of December 31, 2024 |
|  | Amortization period (years) |  | Gross carrying amount |  |  | Accumulated amortization |  |  | Net carrying amount |
Intellectual property |  | 7-15 years |  | $ | 16,841 |  |  | $ | (15,522 | ) |  | $ | 1,319 |
Trademarks |  | 4-4.5 years |  |  | 882 |  |  |  | (882 | ) |  |  | — |
Other |  | 2-7 years |  |  | 582 |  |  |  | (582 | ) |  |  | — |
In-process research and development |  | Indefinite |  |  | 2,057 |  |  |  | — |  |  |  | 2,057 |
Total |  |  |  | $ | 20,362 |  |  | $ | (16,986 | ) |  | $ | 3,376 |
The weighted average amortization period of our finite-lived intangible assets is 9 years. Amortization expense related to acquired intangibles is estimated at $0.3 million for the remainder of 2025, $0.3 million for the years ending December 31, 2026, 2027 and 2028, and $39,000 for the year ending December 31, 2029.

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