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VESSEL ACQUISITIONS AND DISPOSITIONS (Details) $ in Thousands										1 Months Ended	3 Months Ended	12 Months Ended
	Oct. 23, 2024 USD ($)	Oct. 04, 2024 USD ($)	Jul. 16, 2024 USD ($)	Jul. 05, 2024 USD ($)	Apr. 22, 2024 USD ($)	Apr. 02, 2024 USD ($)	Feb. 07, 2024 USD ($)	Dec. 21, 2023 USD ($)	Nov. 14, 2023 USD ($) T	Nov. 14, 2023 USD ($) T	Mar. 31, 2022 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Oct. 03, 2024 USD ($) T	Oct. 10, 2023 USD ($) T	May 18, 2021 USD ($) item T
$450 Million Credit Facility
VESSEL ACQUISITIONS
Proceeds from secured debt										$ 65,000		$ 65,000
$500 Million Credit Facility
VESSEL ACQUISITIONS
Proceeds from secured debt	$ 20,000
Agreement to Purchase Capesize Vessels | Genco Ranger
VESSEL ACQUISITIONS
Capacity of vessels | T															181,000
Purchase price per vessel															$ 43,100
Agreement to Purchase Capesize Vessels | Genco Intrepid
VESSEL ACQUISITIONS
Capacity of vessels | T														180,000
Purchase price per vessel														$ 47,500
Agreement to Purchase Capesize Vessels | Genco Reliance
VESSEL ACQUISITIONS
Capacity of vessels | T									181,000	181,000
Purchase price per vessel									$ 43,000	$ 43,000
Agreement To Purchase Ultramax Newbuild Vessels | Genco Mary and Genco Laddey
VESSEL ACQUISITIONS
Number of vessels purchased under option to be acquired per purchase agreement | item																2
Capacity of vessels | T																61,000
Purchase price per vessel																$ 29,170
Remaining purchase price of vessels paid											$ 40,838
Capitalized interest associated with new building contracts													$ 5
Genco Commodus
Vessel Dispositions
Sale of assets							$ 19,500		$ 19,500
Broker commission (as a percent)							1.00%		1.00%
Genco Claudius
Vessel Dispositions
Sale of assets					$ 24,200			$ 18,500
Broker commission (as a percent)					2.00%			1.00%
Genco Claudius | Terminated Agreement to Purchase Vessel
Vessel Dispositions
Sale of assets								$ 18,500
Broker commission (as a percent)								1.00%
Genco Maximus
Vessel Dispositions
Sale of assets						$ 22,800		$ 18,000
Broker commission (as a percent)						2.00%		1.00%
Genco Maximus | Terminated Agreement to Purchase Vessel
Vessel Dispositions
Sale of assets								$ 18,000
Broker commission (as a percent)								1.00%
Genco Warrior
Vessel Dispositions
Sale of assets				$ 11,950
Broker commission (as a percent)				3.00%
Genco Hadrian
Vessel Dispositions
Sale of assets		$ 25,000	$ 25,000
Broker commission (as a percent)		2.00%	2.00%

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