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Equity Method Investments (Bergen Ultra LP) (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Apr. 28, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Mar. 30, 2023
Schedule Of Equity Method Investments [Line Items]          
Equity method investments   $ 42,826 $ 15,769    
Gain/(loss) from equity method investments   (146) (262) $ 894  
Gain on deconsolidation of subsidiary   0 844 0  
Revenues   228,209 262,098 289,972  
Proceeds from convertible loan with limited partnership   0 25,189 $ 0  
Bergen Joint Venture [Member]          
Schedule Of Equity Method Investments [Line Items]          
Proceeds from convertible loan with limited partnership $ 25,189        
Bergen Joint Venture [Member]          
Schedule Of Equity Method Investments [Line Items]          
Equity method investments 3,675 5,012 4,700    
Gain/(loss) from equity method investments   312 181    
Gain on deconsolidation of subsidiary $ 844        
Ownership interest percent 25.00%        
Equity method investments $ 4,519        
Bergen Joint Venture [Member] | Ecobulk AS [Member]          
Schedule Of Equity Method Investments [Line Items]          
Ownership interest percent 75.00%        
Bergen [Member]          
Schedule Of Equity Method Investments [Line Items]          
Accounts Receivable Net   246 443    
Bergen [Member] | Commission On Loan Guarantee [Member]          
Schedule Of Equity Method Investments [Line Items]          
Interest and other income   40 28    
Bergen [Member] | Administrative Service Agreement [Member]          
Schedule Of Equity Method Investments [Line Items]          
Revenues   $ 15 $ 10    
Bergen [Member] | Loan Agreement With Nordea [Member]          
Schedule Of Equity Method Investments [Line Items]          
Loan amount         $ 15,400