TRADE RECEIVABLES (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Gross Trade Receivables, short-term	$ 90,212	$ 88,798
Allowance for Doubtful Accounts	(10,348)	(10,944)
Net Trade Receivables	$ 79,864	$ 77,854