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		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Summary of Significant Accounting Policies
Derivative Asset, Current	$ 40		$ 40		$ 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 liability position	$ 0		$ 0		$ 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	$ 92	$ (27)	$ 110	$ 81
Unrealized (losses) gains	$ (121)	$ (38)	$ 39	$ (80)