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 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Net sales $ 9,477 $ 10,691 $ 30,027 $ 32,117
UNITED STATES        
Net sales 302 274 887 799
CANADA        
Net sales 128 134 359 387
Peru and Colombia [Member]        
Net sales 301 340 870 844
HONG KONG        
Net sales [1] 7,715 8,356 24,842 25,998
CHINA        
Net sales 237 601 690 1,321
TAIWAN        
Net sales 331 454 1,049 1,277
JAPAN        
Net sales 111 81 257 202
Malaysia and Singapore [Member]        
Net sales 67 58 199 177
Russia and Kazakhstan [Member]        
Net sales 105 139 303 356
Europe [Member]        
Net sales 130 164 400 473
Other Foreign Countries [Member]        
Net sales $ 50 $ 90 $ 171 $ 283
[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.