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Details of Certain Financial Statement Components (Tables) | 12 Months Ended
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Dec. 31, 2025
Details of Certain Financial Statement Components |
Schedule of accounts receivable, net | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ ​ ​ | December 31, | ​ ​ ​ | December 31,
​ | ​ ​ ​ | 2025 | ​ ​ ​ | 2024
Accounts receivable, net | ​ ​ ​ | (in thousands)
Accounts receivable, gross | ​ | $ | 1,593 | ​ | $ | 1,646
Allowance for expected credit losses | ​ |  | (51) | ​ |  | (34)
Accounts receivable, net | ​ | $ | 1,542 | ​ | $ | 1,612
Schedule of inventories | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
​ | ​ ​ ​ | 2025 | ​ ​ ​ | 2024
Inventories |  | (in thousands)
Raw materials |  | $ | 1,344 |  | $ | 1,608
Work-in-process | ​ | ​ | 204 | ​ | ​ | 179
Finished goods | ​ | ​ | 253 | ​ | ​ | 222
Total inventories |  | $ | 1,801 |  | $ | 2,009
Schedule of property, plant and equipment, net | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
​ | ​ ​ ​ | 2025 | ​ ​ ​ | 2024
Property, plant and equipment, net | ​ | (in thousands)
Furniture, machinery and equipment | ​ | $ | 2,243 | ​ | $ | 1,972
Leasehold improvements | ​ |  | 527 | ​ |  | 500
​ | ​ |  | 2,770 | ​ |  | 2,472
Less: accumulated depreciation | ​ |  | (2,296) | ​ |  | (2,061)
Total property, plant and equipment, net | ​ | $ | 474 | ​ | $ | 411
Schedule of intangible assets, net | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Weighted | ​ | December 31, 2025 | ​ | December 31, 2024
​ | ​ | Average | ​ | Gross | ​ | ​ | ​ | ​ | Net | ​ | Gross | ​ | ​ | ​ | ​ | Net
​ | ​ | Amortization | ​ | Carrying | ​ | Accumulated | ​ | Carrying | ​ | Carrying | ​ | Accumulated | ​ | Carrying
​ | ​ ​ ​ | Period | ​ ​ ​ | Amount | ​ ​ ​ | Amortization | ​ ​ ​ | Amount | ​ ​ ​ | Amount | ​ ​ ​ | Amortization | ​ ​ ​ | Amount
Intangible assets, net | ​ | (in thousands)
Patents, tradenames, and trademarks | ​ | 5 Years | ​ | $ | 948 | ​ | $ | (817) | ​ | $ | 131 | ​ | $ | 931 | ​ | $ | (751) | ​ | $ | 180
Developed technology | ​ | 3.5 Years | ​ | ​ | 654 | ​ | ​ | (504) | ​ | ​ | 150 | ​ | ​ | 536 | ​ | ​ | (296) | ​ | ​ | 240
Customer relationships | ​ | 6 Years | ​ | ​ | 1,525 | ​ | ​ | (761) | ​ | ​ | 764 | ​ | ​ | 1,427 | ​ | ​ | (493) | ​ | ​ | 934
Non-compete agreements | ​ | 4 Years | ​ | ​ | 981 | ​ | ​ | (693) | ​ | ​ | 288 | ​ | ​ | 916 | ​ | ​ | (425) | ​ | ​ | 491
Order backlog | ​ | 0.5 Years | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 22 | ​ | ​ | (22) | ​ | ​ | —
In-process research and development | ​ | Indefinite | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 29 | ​ | ​ | — | ​ | ​ | 29
Total intangible assets, net | ​ | ​ | ​ | $ | 4,108 | ​ | $ | (2,775) | ​ | $ | 1,333 | ​ | $ | 3,861 | ​ | $ | (1,987) | ​ | $ | 1,874
Schedule of future amortization on existing intangibles | ​
​ | ​ | ​ | ​
Years ending December 31, | ​ ​ ​ | (in thousands)
2026 | ​ | $ | 597
2027 | ​ |  | 375
2028 | ​ | ​ | 291
2029 | ​ | ​ | 70
2030 | ​ | ​ | —
Thereafter | ​ |  | —
​ | ​ | $ | 1,333
Schedule of changes in the carrying amount of goodwill | ​
​ | ​ | ​ | ​
​ | ​ ​ ​ | (in thousands)
Balance as of December 31, 2023 | ​ | $ | 2,461
Goodwill acquired in acquisition of Conductive Transfers | ​ | ​ | 232
Adjustment to goodwill, foreign currency exchange rate changes | ​ |  | (35)
Balance as of December 31, 2024 | ​ |  | 2,658
Adjustment to goodwill, acquisition price allocation of Conductive Transfers | ​ |  | (232)
Adjustment to goodwill, foreign currency exchange rate changes | ​ |  | 160
Balance as of December 31, 2025 | ​ | $ | 2,586
Schedule of accrued liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
​ | ​ ​ ​ | 2025 | ​ ​ ​ | 2024
Accrued liabilities | ​ | (in thousands)
Accrued wages and benefits | ​ | $ | 185 | ​ | $ | 194
Accrued vacation | ​ |  | 113 | ​ |  | 146
Accrued other liabilities | ​ |  | 32 | ​ |  | 37
Total accrued liabilities | ​ | $ | 330 | ​ | $ | 377
​

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