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Note 20 - Segment Information (Details Textual)
12 Months Ended
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Number of Operating Segments 2  
Revenue from Contract with Customer, Including Assessed Tax $ 136,223,000 $ 110,121,000
International Operation [Member]    
Export Sales 3,538,000 3,548,000
Revenues 56,819,000 51,228,000
Long-Lived Assets 10,135,000 9,504,000
Net Assets 21,398,000 $ 16,866,000
Intersegment Eliminations [Member]    
Revenue from Contract with Customer, Including Assessed Tax $ 0