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Note 5 - AMP Credits (Details Textual)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2024
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
Sep. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
Dec. 21, 2023
USD ($)
Increase (Decrease) in AMP Credit Receivable     $ (4,152) $ 11,217    
Heavy Fabrications [Member]            
Increase (Decrease) in AMP Credit Receivable $ 3,132 $ 4,488 $ 6,852 $ 11,217    
AMP Credit, Credit Per Watt of Wind Power Produced 0.03   0.03      
AMP Credit, Credits Sold           $ 6,952
AMP Credit, Discount on the Sale Of AMP Credits, Percentage 6.50%   6.50%     6.50%
AMP Credit, Discount on the Sale of AMP Credits, Amount $ 445   $ 445     $ 452
AMP Credit, Write-down of Remaining Credit Receivable           7,541
AMP Credit, Loss on Sale of AMP Credits           490
AMP Credit, Miscellaneous Administrative Cost Incurred 64   64     $ 254
AMP Credit, Miscellaneous Costs Incurred, Uncapitalized $ 42   $ 42   $ 197