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Note 13 - Segment Information - Operating Information by Geographic Area (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Net sales | $ 43,924 | $ 49,134
Income (loss) from operations | (1,671) | (270)
Other income, net | 2,416 | 872
Income before income taxes | 745 | 602
Operating Segments [Member] |  |
Income (loss) from operations | 6,399 | 7,756
Intersegment Eliminations [Member] |  |
Income (loss) from operations | (8,070) | (8,026)
CHINA |  |
Net sales | 1,235 | 2,017
CHINA | Operating Segments [Member] |  |
Income (loss) from operations | (534) | 139
Russia and Kazakhstan [Member] |  |
Net sales | 480 | 559
Russia and Kazakhstan [Member] | Operating Segments [Member] |  |
Income (loss) from operations | (134) | (166)
Primary Reporting Segment [Member] |  |
Net sales | 42,209 | 46,558
Primary Reporting Segment [Member] | Operating Segments [Member] |  |
Income (loss) from operations | $ 7,067 | $ 7,783

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