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Note 6 - Investment in Foreign Joint Venture - Summary of Equity Method Investment (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Total current assets $ 20,449           $ 20,449   $ 14,972  
Total assets 89,350           89,350   81,299  
Total liabilities 23,995           23,995   19,487  
Total joint ventures’ equity 65,355 $ 63,676 $ 63,189 $ 59,561 $ 59,528 $ 61,727 65,355 $ 59,561 61,812 $ 59,867
Total liabilities and equity 89,350           89,350   81,299  
Net income (loss) 997 $ 27 $ 1,469 (207) $ (2,174) $ 1,084 2,493 (1,297)    
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]                    
Total current assets 125,397           125,397   135,217  
Total non-current assets 2,839           2,839   3,003  
Total assets 128,236           128,236   138,220  
Total liabilities 96,174           96,174   104,760  
Total joint ventures’ equity 32,062           32,062   33,460  
Total liabilities and equity 128,236           128,236   $ 138,220  
Revenue 34,330     18,565     73,631 70,148    
Gross profit 4,056     2,754     9,122 8,640    
Net income (loss) $ 1,355     $ 749     $ 2,662 $ 3,422