ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Schedule of Accounts Payable, Accrued Expenses and Other Current Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accounts payable	$ 3,825	$ 3,336
Payroll and benefits	9,194	24,683
Interest	4,129	5,456
Insurance	1,096	702
Accrued drydock and repair costs	151	62
Bunkers and lubricants	2,341	1,317
Charter revenues received in advance	5,217	9,579
Accrued vessel expenses	2,311	1,575
Accrued general and administrative, primarily professional fees	1,011	3,290
Bankruptcy claims accrual	0	5,000
Accrued deferred payment obligation for chartered in vessels	1,944	1,944
Other	3,001	278
Accounts Payable and Other Accrued Liabilities, Current	$ 34,220	$ 57,222