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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Sale of Vessels (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Gain on sale of vessels
Gain on sale of vessels	$ 3,513	$ 7,712	$ 3,555
Genco Progress, Genco Cavalier, Genco Explorer, Genco Muse, Genco Beauty and Genco Knight
Gain on sale of vessels
Gain on sale of vessels	$ 3,513
Genco Wisdom, Genco Reliance, Genco Carrier, Genco Success And Genco Prosperity
Gain on sale of vessels
Gain on sale of vessels		$ 7,712
Genco Marine, Genco Sugar, Genco Pioneer, Genco Leader, Genco Acheron
Gain on sale of vessels
Gain on sale of vessels			$ 3,555

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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2941-110230

+ Details

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- References

No definition available.

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