GEOGRAPHIC INFORMATION (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2016 USD ($) Customer country	Mar. 31, 2015 USD ($) Customer country	Mar. 31, 2014 USD ($) Customer country
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 209,797	$ 225,735	$ 215,017	$ 206,358	$ 200,762	$ 231,781	$ 215,805	$ 216,662	$ 856,907	$ 865,010	$ 818,607
Number of countries, 10% or more of Net Revenues, excluding the U.S. | country									0	0	0
Number of customers representing 10% or more of Net Revenues | Customer									0	0	0
Long-Lived Assets	149,735				139,413				$ 149,735	$ 139,413
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									482,622	487,607	$ 475,278
Long-Lived Assets	76,131				72,792				76,131	72,792
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	41,258				40,875				41,258	40,875
Europe and Africa
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									217,633	213,702	195,385
Asia Pacific
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									105,687	104,829	94,455
Americas, excluding U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									50,965	58,872	53,489
The Netherlands
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	18,186				11,007				18,186	11,007
Other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 14,160				$ 14,739				14,160	14,739
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									374,285	377,403	343,329
Enterprise
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									626,666	619,284	588,265
Consumer
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									$ 230,241	$ 245,726	$ 230,342