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Note 5 - AMP Credits (Details Textual)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
Dec. 21, 2023
USD ($)
Increase (Decrease) in AMP Credit Receivable     $ (5,360) $ 6,729    
Heavy Fabrications [Member]            
Increase (Decrease) in AMP Credit Receivable $ 1,848 $ 3,567 $ 3,720 $ 6,729    
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 $ 242   $ 242     $ 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 65   65     $ 254
AMP Credit, Miscellaneous Costs Incurred, Uncapitalized $ 28   $ 28   $ 197