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Note 5 - Accrued Liabilities (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2025
Notes Tables |
Schedule of Accrued Liabilities [Table Text Block] |
|  | September 30, |  |  | December 31, |
|  | 2025 |  |  | 2024 |
Preferred stock dividends payable |  | $ | 2,901 |  |  | $ | 2,901 |
Accrued compensation and related charges |  |  | 2,511 |  |  |  | 2,832 |
Payable in connection with construction in progress |  |  | 1,953 |  |  |  | 1,985 |
Accrued professional services |  |  | 884 |  |  |  | 1,460 |
Accrued income taxes |  |  | 759 |  |  |  | 127 |
Current portion of operating lease liabilities |  |  | 562 |  |  |  | 536 |
Accrued product warranty |  |  | 512 |  |  |  | 451 |
Advances from customers |  |  | 506 |  |  |  | 1,590 |
Other tax payable |  |  | 380 |  |  |  | 399 |
Other personnel-related costs |  |  | 337 |  |  |  | 256 |
Accrual for sales returns |  |  | 33 |  |  |  | 28 |
Other accrued liabilities |  |  | 1,164 |  |  |  | 1,991 |
|  | $ | 12,502 |  |  | $ | 14,556 |

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