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Note 11 - Segment Information - Net Sales by Geographic Area (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Net sales |  | $ 10,615 | $ 11,716 | $ 32,987 | $ 36,622
UNITED STATES |  |  |  |  |
Net sales |  | 276 | 332 | 827 | 860
CANADA |  |  |  |  |
Net sales |  | 180 | 149 | 507 | 450
PERU |  |  |  |  |
Net sales |  | 365 | 290 | 1,175 | 1,099
HONG KONG |  |  |  |  |
Net sales | [1] | 8,412 | 9,424 | 26,391 | 28,916
CHINA |  |  |  |  |
Net sales |  | 254 | 346 | 917 | 1,313
TAIWAN |  |  |  |  |
Net sales |  | 552 | 482 | 1,460 | 1,675
JAPAN |  |  |  |  |
Net sales |  | 152 | 157 | 341 | 528
Malaysia and Singapore [Member] |  |  |  |  |
Net sales |  | 54 | 96 | 207 | 316
Russia and Kazakhstan [Member] |  |  |  |  |
Net sales |  | 112 | 129 | 351 | 421
Europe [Member] |  |  |  |  |
Net sales |  | 182 | 188 | 567 | 693
Other Foreign Countries [Member] |  |  |  |  |
Net sales |  | $ 76 | $ 123 | $ 244 | $ 351
[1] | Substantially all of our Hong Kong revenues are derived from the sale of products that are delivered to members in China. See “Item 1A. Risk Factors” in this report and in our most recent Annual Report on Form 10-K.

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