PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
PREPAID EXPENSES AND OTHER CURRENT ASSETS
Working capital due from Navig8	$ 25,100
Prepaid insurance	7,894	$ 1,830
Bunkers and lubricants	6,581	6,425
Insurance claims receivable	3,427	4,420
Other	7,398	11,209
Total	50,400	23,884
Advances to third-party technical managers	$ 4,000	$ 8,100