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PROPERTY AND EQUIPMENT | 12 Months Ended
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Dec. 31, 2023
PROPERTY AND EQUIPMENT |
PROPERTY AND EQUIPMENT | (4) PROPERTY AND EQUIPMENT The components of property and equipment are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2023 |  | December 31, 2022
Property and equipment | ​ | ​ |  |  | ​ |
Office furniture and equipment | ​ | $ | 2,768 | ​ | $ | 2,819
Assembly equipment | ​ |  | 178 | ​ |  | 110
Vehicles | ​ |  | 75 | ​ |  | 203
Leasehold improvements | ​ |  | 1,174 | ​ |  | 1,173
Leased devices | ​ | ​ | 796 | ​ | ​ | 1,162
Capital projects | ​ |  | 869 | ​ |  | —
​ | ​ | $ | 5,860 | ​ | $ | 5,467
Less accumulated depreciation | ​ |  | (2,746) | ​ |  | (3,292)
​ | ​ | $ | 3,114 | ​ | $ | 2,175
​ Total depreciation expense related to our purchased property and equipment was $0.8 million and $0.7 million for the years ended December 31, 2023 and 2022, respectively. Total depreciation expense related to devices out on lease was $1.9 million and $1.5 million for the years ended December 31, 2023 and 2022, respectively. Depreciation on leased units is reflected on the income statement as cost of revenue.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-7 + Details
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