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Note 11 - Segment Information - Net Sales by Geographic Area (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Net sales |  | $ 9,813 | $ 10,475 | $ 20,550 | $ 21,426
UNITED STATES |  |  |  |  |
Net sales |  | 299 | 263 | 585 | 525
CANADA |  |  |  |  |
Net sales |  | 130 | 142 | 231 | 253
Peru and Colombia [Member] |  |  |  |  |
Net sales |  | 320 | 284 | 569 | 504
HONG KONG |  |  |  |  |
Net sales | [1] | 8,004 | 8,468 | 17,127 | 17,642
CHINA |  |  |  |  |
Net sales |  | 219 | 336 | 453 | 720
TAIWAN |  |  |  |  |
Net sales |  | 396 | 486 | 718 | 823
JAPAN |  |  |  |  |
Net sales |  | 82 | 55 | 146 | 121
Malaysia and Singapore [Member] |  |  |  |  |
Net sales |  | 82 | 66 | 132 | 119
Russia and Kazakhstan [Member] |  |  |  |  |
Net sales |  | 101 | 116 | 198 | 217
Europe [Member] |  |  |  |  |
Net sales |  | 120 | 157 | 270 | 309
Other Foreign Countries [Member] |  |  |  |  |
Net sales |  | $ 60 | $ 102 | $ 121 | $ 193
[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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