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Vessels, subsidiaries and other property, plant and equipment, Other Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Other Property, Plant and Equipment [Abstract]    
Right-of-use assets $ 3,952 $ 5,693
Other property, plant and equipment 637 956
Total other property, plant and equipment $ 4,589 $ 6,649