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Note 6 - Investment in Foreign Joint Venture - Summary of Equity Method Investment (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Total current assets $ 18,896       $ 18,896   $ 14,972  
Total assets 82,573       82,573   81,299  
Total liabilities 18,897       18,897   19,487  
Total joint ventures’ equity 63,676 $ 63,189 $ 59,528 $ 61,727 63,676 $ 59,528 61,812 $ 59,867
Total liabilities and equity 82,573       82,573   81,299  
Net income (loss) 27 $ 1,469 (2,174) $ 1,084 1,496 (1,090)    
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]                
Total current assets 133,640       133,640   135,217  
Total non-current assets 2,802       2,802   3,003  
Total assets 136,442       136,442   138,220  
Total liabilities 106,821       106,821   104,760  
Total joint ventures’ equity 29,621       29,621   33,460  
Total liabilities and equity 136,442       136,442   $ 138,220  
Revenue 22,062   30,369   39,301 51,583    
Gross profit 2,436   3,483   5,066 5,886    
Net income (loss) $ 770   $ 1,772   $ 1,307 $ 2,673