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PREPAID EXPENSES AND OTHER CURRENT AND NONCURRENT ASSETS (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
PREPAID EXPENSES AND OTHER CURRENT AND NONCURRENT ASSETS    
Lubricant inventory, fuel oil and diesel oil inventory and other stores $ 8,162 $ 9,634
Prepaid items 3,619 2,552
Insurance receivable 315 1,030
Other 4,137 2,534
Total prepaid expenses and other current assets 16,233 15,750
Security deposit related to operating lease included in other noncurrent assets $ 514 $ 514