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Note 7 - Investment in Foreign Joint Venture - Summary of Equity Method Investment (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Dec. 31, 2021
Total current assets $ 14,558           $ 14,558   $ 32,217  
Total assets 81,083           81,083   96,580  
Total liabilities 21,522           21,522   36,713  
Total joint ventures’ equity 59,561 $ 59,528 $ 61,727 $ 58,441 $ 59,049 $ 61,561 59,561 $ 58,441 59,867 $ 61,059
Total liabilities and equity 81,083           81,083   96,580  
Net loss (207) $ (2,174) $ 1,084 (277) $ (2,168) $ (406) (1,297) (2,851)    
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]                    
Total current assets 136,833           136,833   88,536  
Total non-current assets 2,677           2,677   3,016  
Total assets 139,510           139,510   91,552  
Total liabilities 106,982           106,982   58,482  
Total joint ventures’ equity 32,528           32,528   33,070  
Total liabilities and equity 139,510           139,510   $ 91,552  
Revenue 18,565     12,364     70,148 55,090    
Gross Profit 2,754     2,332     8,640 7,637    
Net loss $ 749     $ 430     $ 3,422 $ 2,573