REVENUE AND MAJOR CUSTOMERS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2014 Customer	Jun. 30, 2013 Customer	Mar. 31, 2014 Customer
Revenue from External Customer [Line Items]
Net revenues	$ 216,662	$ 202,818
Number of major customers, ten percent or greater, net revenues	0	1
Number of major customers, ten percent or greater, net accounts receivable	0		0
Net revenues [Member] | Customer Concentration Risk [Member] | Ingram Micro [Member]
Revenue from External Customer [Line Items]
Concentration, net revenues		10.50%
US [Member]
Revenue from External Customer [Line Items]
Net revenues	124,467	121,318
Europe and Africa [Member]
Revenue from External Customer [Line Items]
Net revenues	51,262	44,385
Asia Pacific [Member]
Revenue from External Customer [Line Items]
Net revenues	26,969	23,880
Americas, excluding U.S. [Member]
Revenue from External Customer [Line Items]
Net revenues	13,964	13,235
Total international net revenues [Member]
Revenue from External Customer [Line Items]
Net revenues	92,195	81,500
Enterprise [Member]
Revenue from External Customer [Line Items]
Net revenues	152,354	151,183
Consumer [Member]
Revenue from External Customer [Line Items]
Net revenues	$ 64,308	$ 51,635