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PROPERTY AND EQUIPMENT | 9 Months Ended
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Sep. 30, 2025
PROPERTY AND EQUIPMENT |
PROPERTY AND EQUIPMENT | (5) PROPERTY AND EQUIPMENT The components of property and equipment are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, 2025 |  | December 31, 2024
Property and equipment | ​ | ​ |  |  | ​ |
Office furniture and equipment | ​ | $ | 2,766 | ​ | $ | 3,210
Assembly equipment | ​ |  | 154 | ​ |  | 425
Vehicles | ​ |  | 75 | ​ |  | 75
Leasehold improvements | ​ |  | 1,131 | ​ |  | 1,893
Leased devices | ​ | ​ | 725 | ​ | ​ | 815
Capital projects | ​ |  | 4 | ​ |  | 182
Total property and equipment at cost | ​ | ​ | 4,855 | ​ | ​ | 6,600
Less accumulated depreciation | ​ |  | (3,568) | ​ |  | (3,516)
Total property and equipment, net | ​ | $ | 1,287 | ​ | $ | 3,084
​ During the quarter ended September 30, 2025 the Company recorded an impairment charge of $1.3 million on property and equipment associated with its ZMS subsidiary (See Note 7 – Impairment). Total depreciation expense related to property and equipment was $0.2 million and $0.3 million for the three months ended September 30, 2025 and 2024, respectively. Depreciation expense for the nine months ended September 30, 2025 and 2024, was $0.8 million and $0.7 million, respectively. Total depreciation expense related to devices out on lease was $0.3 million and $0.4 million for the three months ended September 30, 2025 and 2024, respectively. Depreciation expense related to devices out on lease was $0.9 million and $1.3 million for the nine months ended September 30, 2025 and 2024, respectively. Depreciation on leased units is reflected on the income statement as cost of revenue.

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