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v3.23.1

Details of Certain Financial Statement Components (Tables) | 3 Months Ended
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Mar. 31, 2023
Details of Certain Financial Statement Components |
Schedule of inventories | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ |  | 2023 |  | 2022
Inventories |  | (in thousands)
Raw materials |  | $ | 2,531 |  | $ | 1,635
Work-in-process | ​ | ​ | 242 | ​ | ​ | 192
Finished goods | ​ | ​ | 203 | ​ | ​ | 285
Total inventories |  | $ | 2,976 |  | $ | 2,112
​
Schedule of property, plant and equipment, net | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ |  | 2023 |  | 2022
Property, plant and equipment, net | ​ | (in thousands)
Furniture, machinery and equipment | ​ | $ | 1,857 | ​ | $ | 1,688
Leasehold improvements | ​ |  | 420 | ​ |  | 417
​ | ​ |  | 2,277 | ​ |  | 2,105
Less: accumulated depreciation | ​ |  | (1,968) | ​ |  | (1,921)
Total property, plant and equipment, net | ​ | $ | 309 | ​ | $ | 184
​
Schedule of intangible assets, net | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ |  | 2023 |  | 2022
Intangible assets, net | ​ | (in thousands)
Patents and trademarks | ​ | $ | 658 | ​ | $ | 658
Less: accumulated amortization | ​ |  | (594) | ​ |  | (582)
Total intangible assets, net | ​ | $ | 64 | ​ | $ | 76
​
Schedule of future amortization on existing intangibles | ​
​ | ​ | ​ | ​
Years ending December 31, |  | (in thousands)
2023 (remainder of year) | ​ | $ | 30
2024 | ​ |  | 27
2025 | ​ |  | 7
2026 | ​ |  | —
2027 | ​ |  | —
Thereafter | ​ | ​ | —
​ | ​ | $ | 64
​
Schedule of accrued liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ |  | 2023 |  | 2022
Accrued liabilities | ​ | (in thousands)
Accrued wages and benefits | ​ | $ | 177 | ​ | $ | 320
Accrued vacation | ​ |  | 228 | ​ |  | 223
Other accrued liabilities | ​ |  | 125 | ​ |  | 25
Total accrued liabilities | ​ | $ | 530 | ​ | $ | 568

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