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PROPERTY, PLANT AND EQUIPMENT | 12 Months Ended
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Dec. 31, 2025
PROPERTY, PLANT AND EQUIPMENT |
PROPERTY, PLANT AND EQUIPMENT | NOTE 5: PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment are presented at cost, net of accumulated depreciation, and consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) | ​ | Estimated | ​ | ​ | ​ | ​ | ​ | ​
December 31, | ​ ​ ​ | Useful Lives | ​ ​ ​ | 2025 | ​ ​ ​ | 2024
Land |  | N/A | ​ | $ | 1,233 | ​ | $ | 1,233
Buildings |  | 7-40 | ​ |  | 27,428 | ​ |  | 26,643
Operating equipment |  | 3-15 | ​ |  | 19,948 | ​ |  | 19,368
Furniture and fixtures |  | 5-7 | ​ |  | 3,637 | ​ |  | 3,476
Vehicles |  | 5-10 | ​ |  | 7,946 | ​ |  | 7,936
Gross property, plant and equipment |  | ​ | ​ |  | 60,192 | ​ |  | 58,656
Less: accumulated depreciation |  | ​ | ​ |  | (37,542) | ​ |  | (34,409)
​ | ​ | ​ | ​ | $ | 22,650 | ​ | $ | 24,247
​ Depreciation expense was $3.1 million in 2025, $2.8 million in 2024 and $2.4 million in 2023. The Company had accounts payable for purchases of property and equipment of $116 thousand as of December 31, 2024 and $11 thousand as of December 31, 2023. There were no unpaid purchases of property and equipment as of December 31, 2025.

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