PROPERTY PLANT AND EQUIPMENT (NARRATIVE) (DETAILS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Depreciation and amortization expense for property, plant and equipment	$ 54,000	$ 46,900	$ 38,700
Property, plant and equipment, net	168,289	150,212
Software Development [Member]
Property, plant and equipment, net	$ 18,400	$ 17,100