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Note 3 - Revenues - Revenue by Geographic Destination (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Total revenues $ 24,512 $ 29,975
UNITED STATES    
Total revenues 10,983 12,302
Europe [Member]    
Total revenues 6,578 7,441
Greater China [Member]    
Total revenues 4,382 6,505
Rest of the World [Member]    
Total revenues $ 2,569 $ 3,727