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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Bunker swaps and Forward Purchase Agreements (Details) - Bunker Swap and Forward Fuel Purchase Agreements - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Summary of Significant Accounting Policies          
Fair value of derivatives - asset position $ 0   $ 0   $ 1
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] Prepaid Expense and Other Assets, Current   Prepaid Expense and Other Assets, Current   Prepaid Expense and Other Assets, Current
Fair value of derivatives - liability position $ 82   $ 82   $ 0
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] Accounts Payable and Accrued Liabilities, Current   Accounts Payable and Accrued Liabilities, Current   Accounts Payable and Accrued Liabilities, Current
Other Nonoperating Income (Expense)          
Summary of Significant Accounting Policies          
Realized (losses) gains $ (15) $ 164 $ 95 $ 245  
Unrealized losses $ 123 $ 15 $ 84 $ 95