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Note 13 - Segment Information - Net Sales by Geographic Area (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Net sales |  | $ 39,776 | $ 42,963
UNITED STATES |  |  |
Net sales |  | 1,153 | 1,044
CANADA |  |  |
Net sales |  | 475 | 535
Peru and Colombia [Member] |  |  |
Net sales |  | 1,205 | 1,101
HONG KONG |  |  |
Net sales | [1] | 32,671 | 35,106
CHINA |  |  |
Net sales |  | 946 | 1,580
TAIWAN |  |  |
Net sales |  | 1,542 | 1,591
JAPAN |  |  |
Net sales |  | 333 | 292
Russia and Kazakhstan [Member] |  |  |
Net sales |  | 444 | 490
Europe [Member] |  |  |
Net sales |  | 530 | 635
Other Foreign Countries [Member] |  |  |
Net sales |  | $ 477 | $ 589
[1] | Substantially all of the Company's Hong Kong revenues are derived from the sale of products that are delivered to members in China. See “Item 1A. Risk Factors.”

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