The following table summarizes acquired intangible assets at December 31, 2025 and 2024, respectively: | | | | | | | | | | | | | | | | | | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Value | | December 31, 2025 | | | | | | | Subscriber relationships | $ | 85 | | | $ | 43 | | | $ | 42 | | | Distribution rights | 1,250 | | | 855 | | | 395 | | | Customer relationships | 3,374 | | | 94 | | | 3,280 | | | | | | | | | | | | | | | Intellectual property | 2,284 | | | 2,284 | | | — | | | $ | 6,993 | | | $ | 3,276 | | | $ | 3,717 | | | December 31, 2024 | | | | | | | Subscriber relationships | $ | 51 | | | $ | 13 | | | $ | 38 | | | Distribution rights | 1,250 | | | 460 | | | 790 | | | | | | | | | | | | | | | Intellectual property | 2,284 | | | 2,284 | | | — | | | $ | 3,585 | | | $ | 2,757 | | | $ | 828 | |
As of December 31, 2025, the total weighted average remaining useful lives of the definite-lived intangible assets was 7.8 years and the weighted average remaining useful lives by the definite-lived intangible asset category are as follows:
| | | | | | | Intangible Asset | Weighted Average Remaining Useful Life in Years | | Subscriber relationships | 1.00 | | Distribution rights | 1.00 | | Customer relationships | 8.75 |
The changes in the carrying amount of intangible assets during the year ended December 31, 2025 is as follows: | | | | | | | | 2025 | Balance at December 31, 2024 | $ | 828 | | | Amortization expense | (519) | | | Intangible assets acquired in asset acquisition | 34 | | | Intangible assets acquired in business combination | 3,374 | | | | | | Balance at December 31, 2025 | $ | 3,717 | |
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