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Note 10 - Domestic and Foreign Revenues - Revenues From Operations (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Revenues $ 11,185 $ 9,367
MALAYSIA    
Revenues 882 1,579
AUSTRALIA    
Revenues 774 207
GREECE    
Revenues 388 144
HUNGARY    
Revenues 0 496
All Other Foreign Countries [Member]    
Revenues 626 717
Non-US [Member]    
Revenues 2,670 3,143
UNITED STATES    
Revenues $ 8,515 $ 6,224