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UNAUDITED QUARTERLY RESULTS OF OPERATIONS (Details) $ / shares in Units, $ in Thousands		3 Months Ended								6 Months Ended	12 Months Ended
	Jul. 07, 2016	Dec. 31, 2016 USD ($) $ / shares shares	Sep. 30, 2016 USD ($) $ / shares shares	Jun. 30, 2016 USD ($) $ / shares shares	Mar. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Sep. 30, 2015 USD ($) $ / shares shares	Jun. 30, 2015 USD ($) $ / shares shares	Mar. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares
UNAUDITED QUARTERLY RESULTS OF OPERATIONS
Reverse stock split	0.1
Impairment of investment							$ 32,536			$ 0	$ 69,278	$ 39,893
Voyage revenues		$ 43,785	$ 37,871	$ 31,460	$ 20,131	$ 34,236	49,167	$ 33,772	$ 33,609	98,817	133,246	150,784
Operating loss		(18,634)	(20,115)	(100,766)	(46,960)	(37,616)	(35,294)	(46,194)	(73,763)	(203,233)	(186,476)	(192,867)
Net loss		(25,104)	(27,514)	(110,653)	(54,483)	(49,498)	(73,803)	(51,952)	(79,115)	(213,358)	(217,757)	(254,368)
Net loss attributable to noncontrolling interest							(7,178)	(11,620)	(40,673)	(31,064)		(59,471)
Net loss attributable to Genco Shipping& Trading Limited		$ (25,104)	$ (27,514)	$ (110,653)	$ (54,483)	$ (49,498)	$ (66,625)	$ (40,332)	$ (38,442)	$ (182,294)	$ (217,757)	$ (194,897)
Net loss per share-basic | $ / shares		$ (3.43)	$ (3.80)	$ (15.32)	$ (7.55)	$ (6.86)	$ (9.54)	$ (6.67)	$ (6.36)	$ (30.20)	$ (30.03)	$ (29.61)
Net loss per share-diluted | $ / shares		$ (3.43)	$ (3.80)	$ (15.32)	$ (7.55)	$ (6.86)	$ (9.54)	$ (6.67)	$ (6.36)	$ (30.20)	$ (30.03)	$ (29.61)
Weighted average common shares outstanding, basic (in shares) | shares		7,318,452	7,245,268	7,221,735	7,218,795	7,217,404	6,982,434	6,048,719	6,043,078	6,036,051	7,251,231	6,583,163
Weighted average common shares outstanding - Diluted | shares		7,318,452	7,245,268	7,221,735	7,218,795	7,217,404	6,982,434	6,048,719	6,043,078	6,036,051	7,251,231	6,583,163
Common Stock
UNAUDITED QUARTERLY RESULTS OF OPERATIONS
Reverse stock split	0.1

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