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Note 16 - Domestic and Foreign Revenues - Schedule of Revenues (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023
Net sales | $ 653 | $ 650 | $ 531 | $ 392 | $ 446 | $ 438 | $ 403 | $ 441 | $ 2,226 | $ 1,728
SPAIN |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 334 | 330
INDIA |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 193 | 60
AUSTRALIA |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 171 | 5
CANADA |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1 | 137
All Other Foreign Countries [Member] |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 263 | 143
Non-US [Member] |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 962 | 675
UNITED STATES |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 1,264 | $ 1,053

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