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Note 5 - Investment in Foreign Joint Venture - Summary of Equity Method Investment (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Total current assets $ 15,485   $ 14,972  
Total assets 80,647   81,299  
Total liabilities 17,458   19,487  
Total joint ventures’ equity 63,189 $ 61,727 61,812 $ 59,867
Total liabilities and equity 80,647   81,299  
Net income 1,469 1,084    
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]        
Total current assets 138,579   135,217  
Total non-current assets 2,893   3,003  
Total assets 141,472   138,220  
Total liabilities 107,989   104,760  
Total joint ventures’ equity 33,483   33,460  
Total liabilities and equity 141,472   $ 138,220  
Revenue 17,239 21,214    
Gross profit 2,630 2,403    
Net income $ 537 $ 901