ACQUIRED INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 2.1	$ 1.7	$ 4.8	$ 2.7
Weighted Average | Patent
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization period			13 years
Weighted Average | Technology Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization period			3 years
Weighted Average | Customer Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization period			6 years