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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Impairment of long-lived Assets (Details) $ in Thousands													12 Months Ended
	Jan. 01, 2022 $ / item	Jul. 06, 2021 USD ($)	Apr. 08, 2021 USD ($)	Jan. 25, 2021 USD ($)	Jan. 22, 2021 USD ($)	Dec. 17, 2020 USD ($) item	Nov. 30, 2020 USD ($)	Nov. 27, 2020 USD ($)	Nov. 03, 2020 USD ($)	Oct. 16, 2020 USD ($)	Sep. 25, 2020 USD ($)	Sep. 17, 2020 USD ($)	Dec. 31, 2022 USD ($) $ / item	Dec. 31, 2021 USD ($) $ / item	Dec. 31, 2020 USD ($) item	Sep. 30, 2020 USD ($) item	Mar. 31, 2020 item	Feb. 24, 2020 item
Impairment of long-lived assets
Historical one-year time charter average period													10 years
Time charter average period													1 year
Estimated useful life													25 years
Fleet utilization (as a percent)													98.00%
Estimated scrap value (in dollars per lightweight ton) | $ / item	400												400	310
Impairment of vessel assets													$ 0	$ 0	$ 208,935
Genco Cougar
Impairment of long-lived assets
Sale of assets							$ 7,600
Broker commission (as a percent)							3.00%
Genco Lorraine
Impairment of long-lived assets
Adjusted net sales price of vessel															7,751
Impairment of vessel assets															404
Sale of assets		$ 7,950			$ 7,950
Broker commission (as a percent)		2.50%			2.50%
Baltic Cougar
Impairment of long-lived assets
Adjusted net sales price of vessel															7,372
Impairment of vessel assets															790
Baltic Leopard
Impairment of long-lived assets
Adjusted net sales price of vessel															7,840
Impairment of vessel assets															399
Sale of assets			$ 8,000	$ 8,000
Broker commission (as a percent)			2.00%	2.00%
Baltic Hare
Impairment of long-lived assets
Adjusted net sales price of vessel															7,595
Impairment of vessel assets															$ 769
Sale of assets								$ 7,750
Broker commission (as a percent)								2.00%
Supramax Vessels
Impairment of long-lived assets
Number impaired vessel assets | item															9
Impairment of vessel assets															$ 67,200
Ultramax Vessels | Agreement To Exchange Vessels
Impairment of long-lived assets
Number of vessels to be exchanged | item						3
Handysize Vessels | Agreement To Exchange Vessels
Impairment of long-lived assets
Impairment of vessel assets															4,647
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 Panther
Impairment of long-lived assets
Adjusted net sales price of vessel																$ 7,285
Impairment of vessel assets															3,713
Sale of assets									$ 7,510
Broker commission (as a percent)									3.00%
Genco Loire
Impairment of long-lived assets
Adjusted net sales price of vessel																$ 7,497
Impairment of vessel assets															3,408
Sale of assets										$ 7,650
Broker commission (as a percent)										2.00%
Genco Lorraine, Baltic Cougar and Baltic Leopard
Impairment of long-lived assets
Number impaired vessel assets | item																3
Impairment of vessel assets															7,963
Baltic Jaguar
Impairment of long-lived assets
Adjusted net sales price of vessel																$ 7,081
Impairment of vessel assets															4,140
Sale of assets											$ 7,300
Broker commission (as a percent)											3.00%
Genco Normandy
Impairment of long-lived assets
Adjusted net sales price of vessel																$ 5,733
Impairment of vessel assets															2,679
Sale of assets												$ 5,850
Broker commission (as a percent)												2.00%
Genco Picardy, Genco Predator, Genco Provence and Genco Warrior
Impairment of long-lived assets
Number impaired vessel assets | item																	4
Impairment of vessel assets															27,055
Baltic Hare, Baltic Fox, Baltic Wind, Baltic Cove, Baltic Breeze, Genco Ocean, Genco Bay, Genco Avra, Genco Mare and Genco Spirit
Impairment of long-lived assets
Number of vessels to be disposed | item																		10
Impairment of vessel assets															$ 85,768
Baltic Wind, Baltic Breeze and Genco Bay
Impairment of long-lived assets
Number of vessels to be disposed | item																	3

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- Definition

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+ References

No definition available.

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- Definition

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+ References

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- Definition

The fleet utilization percentage used to determine undiscounted cash flows.

+ References

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- Definition

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+ References

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- Definition

Adjusted net sales price of vessel.

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- Definition

Number of vessels determined to be impaired.

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- Definition

Number of vessels to be exchanged.

+ References

No definition available.

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- Definition

The number of vessels to be disposed.

+ References

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- Definition

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+ References

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- Definition

Represents the estimated scrap value of vessels.

+ References

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- Definition

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+ References

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- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585

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