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Note 5 - Investment in Foreign Joint Venture - Summary of Equity Method Investment (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Total current assets $ 17,836       $ 17,836   $ 17,473  
Total assets 83,244       83,244   85,584  
Total liabilities 17,762       17,762   18,576  
Total joint ventures’ equity 65,482 $ 65,911 $ 63,676 $ 63,189 65,482 $ 63,676 67,008 $ 61,812
Total liabilities and equity 83,244       83,244   85,584  
Net income (613) $ (1,598) 27 $ 1,469 (2,211) 1,496    
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]                
Total current assets 110,151       110,151   124,253  
Total non-current assets 9,008       9,008   9,496  
Total assets 119,159       119,159   133,749  
Total liabilities 89,335       89,335   101,562  
Total joint ventures’ equity 29,824       29,824   32,187  
Total liabilities and equity 119,159       119,159   $ 133,749  
Revenues 29,488   22,062   51,198 39,301    
Gross profit 2,878   2,436   4,983 5,066    
Net income $ 219   $ 770   $ 1,180 $ 1,307