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VESSEL ACQUISITIONS AND DISPOSITIONS (Details) $ in Thousands										12 Months Ended
	Nov. 02, 2021 USD ($)	Aug. 03, 2021	Jul. 06, 2021 USD ($)	Apr. 08, 2021 USD ($)	Jan. 25, 2021 USD ($)	Jan. 22, 2021 USD ($)	Dec. 17, 2020 USD ($) item	Jan. 28, 2019 USD ($)	May 31, 2018	Dec. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($) item	Jul. 02, 2021 USD ($) item	May 18, 2021 USD ($) item	Apr. 20, 2021 USD ($) item
VESSEL ACQUISITIONS
Deposits on vessels										$ 18,543
Restricted cash, current										5,643	$ 35,492
Amortization of fair market value of time charters acquired										4,263
Secured Debt | $450 Million Credit Facility
VESSEL ACQUISITIONS
Restricted Cash, Current										$ 5,643
Period for which sales proceeds from vessels will remain as restricted cash										360 days
Collateral vessel replacement period		360 days								360 days
Secured Debt | $495 Million Credit Facility
VESSEL ACQUISITIONS
Restricted Cash, Current											$ 35,492
Period for which sales proceeds from vessels will remain as restricted cash											360 days
Collateral vessel replacement period									120 days		360 days
Number of vessels sold which served as collateral | item											8
Genco Mayflower, Genco Constellation and Genco Madeleine
VESSEL ACQUISITIONS
Number of vessels with below market time charters | item										3
Time charters acquired										$ 4,263
Amortization of fair market value of time charters acquired										4,263
Unamortized fair market value of time charters acquired										0
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 | item													61,000
Purchase price per vessel													$ 29,170
Deposits on vessels										18,543
Remaining purchase price of the vessels										40,838
Capitalized interest associated with new building contracts										$ 292
Agreement To Purchase Ultramax Vessels | Genco Mayflower and Genco Constellation
VESSEL ACQUISITIONS
Number of vessels purchased under option to be acquired per purchase agreement | item												2
Capacity of vessels | item												63,000
Purchase price per vessel												$ 24,563
Agreement To Purchase Ultramax Vessels | Genco Madeleine
VESSEL ACQUISITIONS
Capacity of vessels | item												63,000
Purchase price per vessel												$ 21,875
Agreement To Purchase Ultramax Vessels | Genco Enterprise
VESSEL ACQUISITIONS
Capacity of vessels | item														64,000
Purchase price per vessel														$ 20,200
Ultramax Vessels | Agreement To Exchange Vessels
VESSEL ACQUISITIONS
Number of vessels to be exchanged | item							3
Handysize Vessels | Agreement To Exchange Vessels
VESSEL ACQUISITIONS
Number of vessels to be exchanged | item							6
Adjusted total fair market value of vessels							$ 46,000
Broker commission (as a percent)							1.00%
Baltic Leopard
VESSEL ACQUISITIONS
Sale of assets				$ 8,000	$ 8,000
Broker commission (as a percent)				2.00%	2.00%
Genco Lorraine
VESSEL ACQUISITIONS
Sale of assets			$ 7,950			$ 7,950
Broker commission (as a percent)			2.50%			2.50%
Genco Vigour
VESSEL ACQUISITIONS
Sale of assets								$ 6,550
Broker commission (as a percent)								2.00%
Genco Provence
VESSEL ACQUISITIONS
Sale of assets	$ 13,250
Broker commission (as a percent)	2.50%

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