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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, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Net sales |  | $ 10,691 | $ 10,615 | $ 32,117 | $ 32,987
UNITED STATES |  |  |  |  |
Net sales |  | 274 | 276 | 799 | 827
CANADA |  |  |  |  |
Net sales |  | 134 | 180 | 387 | 507
PERU |  |  |  |  |
Net sales |  | 340 | 365 | 844 | 1,175
HONG KONG |  |  |  |  |
Net sales | [1] | 8,356 | 8,412 | 25,998 | 26,391
CHINA |  |  |  |  |
Net sales |  | 601 | 254 | 1,321 | 917
TAIWAN |  |  |  |  |
Net sales |  | 454 | 552 | 1,277 | 1,460
JAPAN |  |  |  |  |
Net sales |  | 81 | 152 | 202 | 341
Malaysia and Singapore [Member] |  |  |  |  |
Net sales |  | 58 | 54 | 177 | 207
Russia and Kazakhstan [Member] |  |  |  |  |
Net sales |  | 139 | 112 | 356 | 351
Europe [Member] |  |  |  |  |
Net sales |  | 164 | 182 | 473 | 567
Other Foreign Countries [Member] |  |  |  |  |
Net sales |  | $ 90 | $ 76 | $ 283 | $ 244
[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” in our most recent Annual Report on Form 10-K.

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