BUSINESS REORGANIZATION EXPENSES REORGANIZATION EXPENSES BY PLAN (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Business reorganization	$ 1,580	$ 5,828	$ 3,789
2015 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Business reorganization	1,098	0	0
Previous Years Reorganization Plan [Member]
Restructuring Cost and Reserve [Line Items]
Business reorganization	$ 482	$ 5,828	$ 3,789