DEFERRED REVENUE (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 171,822	$ 145,010
Subscription deferred revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue	133,115	127,173
Service and other deferred revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 38,707	$ 17,837