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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands				2 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended
	Jul. 17, 2015 segment	Jul. 09, 2014 $ / item	Jul. 09, 2014 USD ($)	Sep. 30, 2015 USD ($) segment	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Jul. 09, 2014 USD ($)	Sep. 30, 2015 USD ($) $ / item	Dec. 31, 2014 USD ($)
Segment reporting
Number of reportable segments \| segment	2			1
Number of operating segments \| segment	2
Vessels, net
Estimated useful life								25 years
Depreciation expense					$ 19,172	$ 17,221		$ 56,869
Estimated scrap value (in dollars per lightweight ton) \| $ / item								310
Estimated life of average scrap value of steel								15 years
Decrease in depreciation expense					805	$ 735		$ 2,388
Deferred revenue
Accrual related to estimated customer claims				$ 505	$ 505			$ 505	$ 662
Predecessor
Vessels, net
Depreciation expense			$ 3,039				$ 71,756
Estimated scrap value (in dollars per lightweight ton) \| $ / item		245