ACQUISITIONS, GOODWILL, AND ACQUIRED INTANGIBLE ASSETS Pro Forma (Details) - Cirrus Technologies LLC - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Net revenues	$ 1,801,139	$ 1,661,540	$ 1,499,944
Operating income	$ 7,142	$ 640	$ 10,185