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Patents and Trademark Rights, Net | 12 Months Ended
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Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Patents and Trademark Rights, Net | (4) Patents and Trademark Rights, Net Patent and trademark rights consist of the following (in thousands): Schedule of Patent and Trademark Rights
|  | December 31, 2024 |  |  | December 31, 2023 |
|  | Gross Carrying Value |  |  | Accumulated Amortization |  |  | Net Carrying Value |  |  | Gross Carrying Value |  |  | Accumulated Amortization |  |  | Net Carrying Value |
Patents |  | $ | 3,434 |  |  | $ | (939 | ) |  | $ | 2,495 |  |  | $ | 2,947 |  |  | $ | (750 | ) |  | $ | 2,197 |
Trademarks |  |  | 232 |  |  |  | (133 | ) |  |  | 99 |  |  |  | 229 |  |  |  | (113 | ) |  |  | 116 |
Net amortizable patents and trademarks rights |  | $ | 3,666 |  |  | $ | (1,072 | ) |  | $ | 2,594 |  |  | $ | 3,176 |  |  | $ | (863 | ) |  | $ | 2,313 |
Patent and trademark rights acquisitions, abandonments and amortization: Schedule of Changes in Patents, Trademark Rights
December 31, 2023 |  | $ | 2,313 |
Acquisitions |  |  | 538 |
Abandonments and expirations |  |  | (48 | )
Amortization |  |  | (209 | )
December 31, 2024 |  | $ | 2,594 |
Patents and trademarks are stated at cost (primarily legal fees) and are amortized using the straight-line method over an estimated useful life of 17 years for patents and 10 years for trademarks. The weighted remaining average amortization period is approximately 12 years for patents and 6 years for trademarks, respectively. The company expenses annuity costs related to its trademarks and patents. Amortization of patents and trademarks for each of the next five years and thereafter is as follows (in thousands): Schedule of Amortization of Patents and Trademarks
Year Ending December 31, |  |  |
2025 |  | $ | 283 |
2026 |  |  | 278 |
2027 |  |  | 249 |
2028 |  |  | 229 |
2029 |  |  | 211 |
Thereafter |  |  | 1,344 |
Total |  | $ | 2,594 |

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