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Note 7 - Property, Plant and Equipment, Net - Property, Plant and Equipment, Net (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Refinery and facilities $ 72,776 $ 72,776
Land 566 566
Other property and equipment 1,061 913
Property, Plant and Equipment, Gross, Excluding Construction in Progress 74,403 74,255
Less: Accumulated depreciation and amortization (27,465) (25,537)
Property, Plant and Equipment, Net, Excluding Construction in Progress 46,938 48,718
Construction in progress 4,042 3,715
Property, Plant and Equipment, Net $ 50,980 $ 52,433