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Note 13 - Segment Information - Operating Information by Geographic Area (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Net sales | $ 49,134 | $ 60,005
Income (loss) from operations | (270) | 1,571
Other income (expense), net | 872 | (61)
Income before income taxes | 602 | 1,510
Operating Segments [Member] |  |
Income (loss) from operations | 7,756 | 10,294
Intersegment Eliminations [Member] |  |
Income (loss) from operations | (8,026) | (8,723)
CHINA |  |
Net sales | 2,017 | 2,237
CHINA | Operating Segments [Member] |  |
Income (loss) from operations | 139 | 74
Russia and Kazakhstan [Member] |  |
Net sales | 559 | 854
Russia and Kazakhstan [Member] | Operating Segments [Member] |  |
Income (loss) from operations | (166) | (146)
Primary Reporting Segment [Member] |  |
Net sales | 46,558 | 56,914
Primary Reporting Segment [Member] | Operating Segments [Member] |  |
Income (loss) from operations | $ 7,783 | $ 10,366

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