ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Interest Payable	$ 7,792	$ 8,020
Accrued Liabilities [Abstract]
Accrued payroll	2,367	2,481
Accrued bonus	570	3,698
Accrued vacation & holiday	1,886	1,913
Accrued employee benefits	2,863	3,075
Accrued operating lease obligations	2,350	2,475
Accrued professional fees	767	1,104
Restructuring Reserve	285	255	$ 739
Receipts in excess of cost on long-term production contracts	4,782	5,097
Other	1,881	1,897
Total accrued expenses	$ 25,543	$ 30,015