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NET LOSS PER COMMON SHARE (Details) - USD ($) $ in Thousands		3 Months Ended								6 Months Ended		12 Months Ended
	Jul. 09, 2014	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2014	Jul. 09, 2014	Dec. 31, 2015	Dec. 31, 2013
Nonvested shares outstanding		798,615										798,615
Anti-dilutive shares (in shares)												798,615
Common shares outstanding, basic:
Weighted average common shares outstanding - Basic		72,174,041,000	69,824,338,000	60,487,189,000	60,430,789,000	60,415,981,000	60,299,766,000			60,360,515		65,831,637
Common shares outstanding, diluted:
Weighted average common shares outstanding - Basic		72,174,041,000	69,824,338,000	60,487,189,000	60,430,789,000	60,415,981,000	60,299,766,000			60,360,515		65,831,637
Weighted-average common shares outstanding, diluted (in shares)		72,174,041,000	69,824,338,000	60,487,189,000	60,430,789,000	60,415,981,000	60,299,766,000			60,360,515		65,831,637
Reconciliation of the net loss attributable to GS&T and the net loss attributable to GS&T for diluted net loss per share
Net loss attributable to Genco Shipping& Trading Limited		$ (49,498)	$ (66,625)	$ (40,332)	$ (38,442)	$ (164,003)	$ (18,290)			$ (182,294)		$ (194,897)
Net loss attributable to GS&T for the computation of diluted net loss per share										$ (182,294)		$ (194,897)
MIP Warrants
Anti-dilutive shares (in shares)												5,704,974
New Genco Equity Warrants
Anti-dilutive shares (in shares)												3,936,761
Predecessor
Common shares outstanding, basic:
Weighted average common shares outstanding - Basic	43,568,942,000							43,568,942,000	43,568,942,000		43,568,942		43,249,070
Common shares outstanding, diluted:
Weighted average common shares outstanding - Basic	43,568,942,000							43,568,942,000	43,568,942,000		43,568,942		43,249,070
Weighted-average common shares outstanding, diluted (in shares)	43,568,942,000							43,568,942,000	43,568,942,000		43,568,942		43,249,070
Reconciliation of the net loss attributable to GS&T and the net loss attributable to GS&T for diluted net loss per share
Net loss attributable to Genco Shipping& Trading Limited	$ (851,520)							$ (60,524)	$ (39,105)		$ (951,149)		$ (147,741)
Net loss attributable to GS&T for the computation of diluted net loss per share											$ (951,149)		$ (147,741)

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