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Intangible assets | 12 Months Ended
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Dec. 31, 2024
Intangible Assets [Abstract] |
Intangible assets | 12. Intangible assets Activity within intangible assets, for the year ended December 31, 2024 consists of the following:
| Customer relationships |  | Tradenames |  | Software |  | Other |  | Total
January 1, 2024 | $ | — |  |  | $ | 13,980 |  |  | $ | 18,983 |  |  | $ | 250 |  |  | $ | 33,213 |
Additions | — |  |  | — |  |  | 1,591 |  |  | — |  |  | 1,591 |
Disposals | — |  |  | — |  |  | — |  |  | — |  |  | — |
Reclassification | — |  |  | — |  |  | — |  |  | — |  |  | — |
Amortization | — |  |  | — |  |  | (4,540) |  |  | (97) |  |  | (4,637) |
December 31, 2024 | $ | — |  |  | $ | 13,980 |  |  | $ | 16,034 |  |  | $ | 153 |  |  | $ | 30,167 |
As of December 31, 2024 |  |  |  |  |  |  |  |  |
Cost | $ | 2,153 |  |  | $ | 13,980 |  |  | $ | 37,854 |  |  | $ | 969 |  |  | $ | 54,956 |
Accumulated amortization | (2,153) |  |  | — |  |  | (21,820) |  |  | (816) |  |  | (24,789) |
Net book value | $ | — |  |  | $ | 13,980 |  |  | $ | 16,034 |  |  | $ | 153 |  |  | $ | 30,167 |
There were no write-offs of intangible assets for the year ended December 31, 2024. Activity within intangible assets, net, for the year ended December 31, 2023 consists of the following:
|  |  | Customer relationships |  | Tradenames |  | Software |  | Other |  | Total
January 1, 2023 |  |  | $ | 179 |  |  | $ | 13,980 |  |  | $ | 21,509 |  |  | $ | 348 |  |  | $ | 36,016 |
Additions |  |  | — |  |  | — |  |  | 1,832 |  |  | — |  |  | 1,832 |
Amortization |  |  | (179) |  |  | — |  |  | (4,358) |  |  | (98) |  |  | (4,635) |
December 31, 2023 |  |  | $ | — |  |  | $ | 13,980 |  |  | $ | 18,983 |  |  | $ | 250 |  |  | $ | 33,213 |
As of December 31, 2023 |  |  |  |  |  |  |  |  |  |  |
Cost |  |  | $ | 2,153 |  |  | $ | 13,980 |  |  | $ | 37,022 |  |  | $ | 969 |  |  | $ | 54,124 |
Accumulated amortization |  |  | (2,153) |  |  | — |  |  | (18,039) |  |  | (719) |  |  | (20,911) |
Net book value |  |  | $ | — |  |  | $ | 13,980 |  |  | $ | 18,983 |  |  | $ | 250 |  |  | $ | 33,213 |
As of December 31, 2023, the Company wrote off $9,700 of fully amortized core technology and $58,520 of fully amortized customer relationships since management concluded that these intangibles no longer had value in use. Tradenames comprise indefinite-lived intangible assets, which have been allocated to the Mid-Atlantic business unit for purposes of impairment testing. No impairment was recognized in 2024, 2023, or 2022 (see Note 13 for additional information regarding impairment testing). In 2024, 2023, and 2022, for all other intangible assets, Management did not identify any events or changes in circumstances to indicate that the carrying amount may not be recoverable.

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- Definition Intangible Assets [Abstract] + References No definition available. + Details
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