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Note 9 - Geographic Information and Major Customer Data - Revenues Based On Customer Location (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Revenues $ 28,384 $ 27,207 $ 78,307 $ 77,716
UNITED STATES        
Revenues 6,780 8,119 15,943 12,022
Europe and Middle East [Member]        
Revenues 1,524 2,690 5,018 11,644
Asia Pacific [Member]        
Revenues 20,080 16,398 57,346 54,037
Other [Member]        
Revenues 0 0 0 13
CHINA        
Revenues $ 14,746 $ 10,723 $ 44,590 $ 39,748