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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Jul. 17, 2015 segment | Mar. 31, 2016 USD ($) segment $ / item | Mar. 31, 2015 USD ($) | Dec. 31, 2015 USD ($)
Segment reporting |  |  |  |
Number of reportable segments | segment | 2 | 1 |  |
Vessels, net |  |  |  |
Estimated useful life |  | 25 years |  |
Depreciation expense |  | $ 19,134 | $ 18,967 |
Estimated scrap value (in dollars per lightweight ton) | $ / item |  | 310 |  |
Deferred revenue |  |  |  |
Accrual related to estimated customer claims |  | $ 307 |  | $ 498
Voyage expense recognition |  |  |  |
Net loss on purchase and sale of bunker fuel and LCM adjustments |  | 2,297 | 2,292 |
Impairment of vessel assets |  |  |  |
Impairment of vessel assets |  | $ 1,685 | $ 35,396 |

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- Definition Represents the net gains (losses) resulting from the difference between the cost of bunker fuel delivered by the terminating charterer and the bunker fuel sold to the new charterer and the lower of cost or market adjustment to re-value bunker fuel on a quarterly basis. + References No definition available. + Details
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- Definition Represents the estimated scrap value of vessels. + References No definition available. + Details
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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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