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PROPERTY AND EQUIPMENT, NET (Tables) | 9 Months Ended
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Sep. 30, 2023
PROPERTY AND EQUIPMENT, NET |
Schedule of property and equipment, net | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Estimated Useful | ​ | September 30, | ​ | December 31,
​ |  | Life (in years) |  | 2023 |  | 2022
Buildings, machinery, and equipment | ​ | 5 to 25 | ​ | $ | 183,673 | ​ | $ | 165,673
Computer equipment, furniture, fixtures, and vehicles | ​ | 3 to 5 | ​ |  | 42,555 | ​ |  | 36,281
Leasehold improvements | ​ | 2 to 10 | ​ |  | 75,308 | ​ |  | 63,103
Construction in process | ​ | ​ | ​ |  | 19,525 | ​ |  | 18,226
​ | ​ | ​ | ​ |  | 321,061 | ​ |  | 283,283
Less: Accumulated depreciation | ​ | ​ | ​ |  | (159,390) | ​ |  | (134,821)
Property and equipment, net | ​ | ​ | ​ | $ | 161,671 | ​ | $ | 148,462
Schedule of depreciation expense recorded in continuing operations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, | ​ | Nine Months Ended September 30,
​ |  | 2023 |  | 2022 |  | 2023 |  | 2022
Depreciation expense | ​ | $ | 9,749 | ​ | $ | 8,507 | ​ | $ | 28,578 | ​ | $ | 25,352
​

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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