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Details of Certain Financial Statement Components | 9 Months Ended
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Sep. 30, 2023
Details of Certain Financial Statement Components |
Details of Certain Financial Statement Components | Note 2 – Details of Certain Financial Statement Components Inventories, stated at the lower of cost or net realizable value, consisted of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
​ |  | 2023 |  | 2022
Inventories |  | (in thousands)
Raw materials |  | $ | 2,398 |  | $ | 1,635
Work-in-process | ​ | ​ | 205 | ​ | ​ | 192
Finished goods | ​ | ​ | 272 | ​ | ​ | 285
Total inventories |  | $ | 2,875 |  | $ | 2,112
​ Property, plant and equipment, net, consisted of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
​ |  | 2023 |  | 2022
Property, plant and equipment, net | ​ | (in thousands)
Furniture, machinery and equipment | ​ | $ | 1,910 | ​ | $ | 1,688
Leasehold improvements | ​ |  | 403 | ​ |  | 417
​ | ​ |  | 2,313 | ​ |  | 2,105
Less: accumulated depreciation | ​ |  | (2,008) | ​ |  | (1,921)
Total property, plant and equipment, net | ​ | $ | 305 | ​ | $ | 184
​ Depreciation expense totaled $42,000 and $48,000 for the three months ended September 30, 2023 and 2022, respectively. Depreciation expense totaled $125,000 and $150,000 for the nine months ended September 30, 2023 and 2022, respectively. Intangible assets, net consisted of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
​ |  | 2023 |  | 2022
Intangible assets, net | ​ | (in thousands)
Patents, tradenames, and trademarks | ​ | $ | 705 | ​ | $ | 658
Developed technology | ​ | ​ | 134 | ​ | ​ | —
Customer relationships | ​ | ​ | 96 | ​ | ​ | —
Non-compete agreements | ​ | ​ | 26 | ​ | ​ | —
Order backlog | ​ | ​ | 22 | ​ | ​ | —
In-process research and development | ​ | ​ | 29 | ​ | ​ | —
​ | ​ | ​ | 1,012 | ​ | ​ | 658
Less: accumulated amortization | ​ |  | (723) | ​ |  | (582)
Total intangible assets, net | ​ | $ | 289 | ​ | $ | 76
​ Amortization expense totaled $36,000 and $14,000 for the three months ended September 30, 2023 and 2022, respectively. Amortization expense totaled $142,000 and $42,000 for the nine months ended September 30, 2023 and 2022, respectively. Future amortization expense on existing intangible assets is as follows: ​
​ | ​ | ​ | ​
Years ending December 31, |  | (in thousands)
2023 (remainder of year) | ​ | $ | 35
2024 | ​ |  | 125
2025 | ​ |  | 48
2026 | ​ |  | 27
2027 | ​ |  | 25
Thereafter | ​ | ​ | 29
​ | ​ | $ | 289
​ Accrued liabilities consisted of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
​ |  | 2023 |  | 2022
Accrued liabilities | ​ | (in thousands)
Accrued compensation and benefits | ​ | $ | 172 | ​ | $ | 320
Accrued vacation | ​ |  | 205 | ​ |  | 223
Other accrued liabilities | ​ |  | 66 | ​ |  | 25
Total accrued liabilities | ​ | $ | 443 | ​ | $ | 568
​

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