Represents brokerage commission payable in percentage to the third party.

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The debt covenant period for replacement of new vessel having an equal or greater appraised value if in compliance with collateral maintenance test.

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Debt convent pertaining to amount of total cash and cash equivalents, in which the entity may pay dividends or repurchase of stock.

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Debt covenant pertaining to the percentage of total cash and cash equivalents to total indebtedness, in which the entity may pay dividends or repurchase of stock.

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No definition available.

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Represents the aggregate fair value of the mortgaged vessels to be maintained as a percentage of aggregate outstanding principal amount as per the terms of the credit facilities' covenants.

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No definition available.

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Number of credit facilities amended during the period.

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The percentage limit of consolidated net income for dividends to be paid if collateral maintenance test is met.

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No definition available.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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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.

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Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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SUBSEQUENT EVENTS (Details) $ / shares in Units, $ in Thousands						9 Months Ended
	Nov. 05, 2019 USD ($) item $ / shares	Nov. 04, 2019 USD ($)	Oct. 21, 2019 USD ($)	Oct. 10, 2019 USD ($)	Aug. 14, 2018 USD ($)	Sep. 30, 2019 USD ($)	Apr. 15, 2019 USD ($)	Feb. 28, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Subsequent Events
Restricted cash									$ 4,947		$ 7,234
Secured Debt \| $495 Million Credit Facility
Subsequent Events
Maximum borrowing capacity						$ 495,000	$ 495,000	$ 495,000	495,000	$ 495,000
Percentage limit of consolidated net income for which dividends can be paid						50.00%
Collateral vessel replacement period						180 days
Secured Debt \| $495 Million Credit Facility \| Genco Challenger
Subsequent Events
Maximum borrowing capacity						$ 495,000
Secured Debt \| $495 Million Credit Facility \| Genco Champion
Subsequent Events
Maximum borrowing capacity						$ 495,000
Secured Debt \| $495 Million Credit Facility \| Minimum
Subsequent Events
Collateral security maintenance test (as a percent)						135.00%
Secured Debt \| $495 Million Credit Facility \| Maximum
Subsequent Events
Collateral security maintenance test (as a percent)						200.00%
Secured Debt \| $35,000 Scrubber Tranche
Subsequent Events
Maximum borrowing capacity						$ 35,000	$ 34,628	$ 35,000
Secured Debt \| $108 Million Credit Facility
Subsequent Events
Maximum borrowing capacity					$ 108,000	$ 108,000			$ 108,000	$ 108,000
Percentage limit of consolidated net income for which dividends can be paid					50.00%
Secured Debt \| $108 Million Credit Facility \| Minimum
Subsequent Events
Collateral security maintenance test (as a percent)					135.00%
Secured Debt \| $108 Million Credit Facility \| Maximum
Subsequent Events
Collateral security maintenance test (as a percent)					200.00%
Subsequent Event \| Quarterly Dividend
Subsequent Events
Dividends declared per share \| $ / shares	$ 0.175
Aggregate amount of dividend	$ 7,351
Subsequent Event \| Special Dividend
Subsequent Events
Dividends declared per share \| $ / shares	$ 0.325
Aggregate amount of dividend	$ 13,652
Subsequent Event \| Genco Challenger
Subsequent Events
Sale of assets				$ 5,250
Broker commission (as a percent)				2.00%
Subsequent Event \| Genco Champion
Subsequent Events
Sale of assets			$ 6,600
Broker commission (as a percent)			3.00%
Subsequent Event \| Secured Debt \| Amended $495 and $108 Credit Facilities
Subsequent Events
Number of amended credit facilities \| item	2
Debt covenant to pay dividends or repurchase stock - Total cash and cash equivalents to total indebtedness (as a percent)	18.75%
Percentage limit of consolidated net income for which dividends can be paid	50.00%
Collateral security maintenance test (as a percent)	200.00%
Subsequent Event \| Secured Debt \| Amended $495 and $108 Credit Facilities \| Minimum
Subsequent Events
Debt covenant to pay dividends or repurchase stock - Total cash and cash equivalents	$ 100,000
Subsequent Event \| Secured Debt \| $495 Million Credit Facility
Subsequent Events
Maximum borrowing capacity	495,000
Subsequent Event \| Secured Debt \| $495 Million Credit Facility \| Genco Challenger
Subsequent Events
Restricted cash				$ 3,381
Collateral vessel replacement period				180 days
Subsequent Event \| Secured Debt \| $495 Million Credit Facility \| Genco Champion
Subsequent Events
Restricted cash			$ 4,101
Collateral vessel replacement period			180 days
Subsequent Event \| Secured Debt \| $35,000 Scrubber Tranche
Subsequent Events
Maximum borrowing capacity	35,000
Subsequent Event \| Secured Debt \| $108 Million Credit Facility
Subsequent Events
Maximum borrowing capacity	$ 108,000
Subsequent Event \| Forecast \| Genco Raptor
Subsequent Events
Sale of assets		$ 10,200
Broker commission (as a percent)		2.00%