v3.26.1
Transactions with Related Parties (Narrative) (Details) - USD ($)
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Related Party Transaction [Line Items]      
Accounts payable $ 11,754,000   $ 10,611,000
Altair Travel Agency S.A. [Member]      
Related Party Transaction [Line Items]      
Related Party Transaction, Amounts of Transaction 1,458,000 $ 1,426,000  
Accounts payable 241,000   89,000
Steamship Shipbroking Enterprises [Member]      
Related Party Transaction [Line Items]      
Related Party Transaction, Amounts of Transaction 2,150,000 $ 2,136,000  
Accounts payable 0   $ 0
Steamship Shipbroking Enterprises [Member] | FuelEUAssignmentAgreement [Member]      
Related Party Transaction [Line Items]      
Related Party Transaction, Amounts of Transaction $ 335,000