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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Bunker swaps and Forward Purchase Agreements (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Summary of Significant Accounting Policies      
Fair value of derivative instruments $ 572 $ 6,312  
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Prepaid Expense and Other Assets, Current Prepaid Expense and Other Assets, Current  
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Accounts Payable and Accrued Liabilities, Current Accounts Payable and Accrued Liabilities, Current  
Bunker Swap and Forward Fuel Purchase Agreements      
Summary of Significant Accounting Policies      
Fair value of derivative instruments $ 1 $ 168  
Fair value of liability position 0 71  
Other income (expense) | Bunker Swap and Forward Fuel Purchase Agreements      
Summary of Significant Accounting Policies      
Realized (losses) gains 202 1,631 $ 439
Unrealized (losses) gains $ (96) $ 3 $ 34