NET LOSS PER COMMON SHARE (Details) $ in Thousands		3 Months Ended								6 Months Ended		12 Months Ended
	Jul. 07, 2016	Dec. 31, 2016 USD ($) shares	Sep. 30, 2016 USD ($) shares	Jun. 30, 2016 USD ($) shares	Mar. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($) shares	Sep. 30, 2015 USD ($) shares	Jun. 30, 2015 USD ($) shares	Mar. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares	Jul. 09, 2014 USD ($) shares	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($) shares
Nonvested shares outstanding		89,526										89,526
Anti-dilutive shares (in shares)												89,526
Reverse stock split	0.1
Common shares outstanding, basic:
Weighted average common shares outstanding, basic (in 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 shares outstanding, diluted:
Weighted average common shares outstanding, basic (in 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 (in 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
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 | $		$ (25,104)	$ (27,514)	$ (110,653)	$ (54,483)	$ (49,498)	$ (66,625)	$ (40,332)	$ (38,442)	$ (182,294)		$ (217,757)	$ (194,897)
Net loss attributable to GS&T for the computation of diluted net loss per share | $										$ (182,294)		$ (217,757)	$ (194,897)
Warrants
Anti-dilutive shares (in shares)												713,122
New Genco Equity Warrants
Anti-dilutive shares (in shares)												3,936,761
Series A Preferred Stock
Anti-dilutive shares (in shares)												27,061,856
Preferred stock outstanding (in shares)		27,061,856										27,061,856
Predecessor
Common shares outstanding, basic:
Weighted average common shares outstanding, basic (in shares)											43,568,942
Common shares outstanding, diluted:
Weighted average common shares outstanding, basic (in shares)											43,568,942
Weighted-average common shares outstanding, diluted (in shares)											43,568,942
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 | $											$ (951,149)
Net loss attributable to GS&T for the computation of diluted net loss per share | $											$ (951,149)