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Note 11 - Revenues - Revenue by Geographic Destination (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Total revenues $ 29,975 $ 28,778
UNITED STATES    
Total revenues 12,302 12,239
Europe [Member]    
Total revenues 7,441 7,823
HONG KONG    
Total revenues 3,508 1,706
Rest of Asia [Member]    
Total revenues 5,273 5,027
Rest of the World [Member]    
Total revenues $ 1,451 $ 1,983