Quarterly report [Sections 13 or 15(d)]

Note 11 - Segment Information - Net Sales by Geographic Area (Details)

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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.