FIXED ASSETS, NET (Schedule of Fixed Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 1,431,400	$ 1,491,384
Less: Accumulated depreciation and amortization	(1,300,246)	(1,333,103)
Property, Plant and Equipment, Net	131,154	158,281
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	7,456	11,370
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	464,918	516,643
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	934,174	934,951
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	17,889	18,620
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 6,963	$ 9,800