PREPAID EXPENSES AND OTHER CURRENT ASSETS (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Prepaid Expense and Other Current Assets
Bunkers and lubricants	$ 8,497	$ 7,522
Insurance claims receivable	5,033	5,047
Prepaid insurance	1,978	3,185
Other	14,619	11,857
Total	30,127	27,611
Insurance claims receivable included in Other noncurrent assets	50	588
Advances to third party technical managers	6,300	4,700
Navig8 Group
Prepaid Expense and Other Current Assets
Working capital due from Navig8	3,500	1,900
Gener8 Orion | Prepaid Expenses and Other Current Assets | Navig8 Group
Prepaid Expense and Other Current Assets
Working capital due from Navig8	900
Gener8 Defiance | Prepaid Expenses and Other Current Assets | Navig8 Group
Prepaid Expense and Other Current Assets
Working capital due from Navig8	600
Gener8 Noble | Prepaid Expenses and Other Current Assets | Navig8 Group
Prepaid Expense and Other Current Assets
Working capital due from Navig8	1,000
Gener8 Theseus | Prepaid Expenses and Other Current Assets | Navig8 Group
Prepaid Expense and Other Current Assets
Working capital due from Navig8	$ 1,000
Gener8 Spyridon | Prepaid Expenses and Other Current Assets | Navig8 Group
Prepaid Expense and Other Current Assets
Working capital due from Navig8		900
Gener8 Ulysses | Prepaid Expenses and Other Current Assets | Navig8 Group
Prepaid Expense and Other Current Assets
Working capital due from Navig8		$ 1,000