DEFERRED REVENUES (Details) - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	$ 92,640	$ 97,911
Deferred revenues, non-current (in Other liabilities)	1,486	1,690
Total deferred revenues	94,126	99,601
Deferred Maintenance Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	73,594	79,533
Deferred Subscription Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	15,397	14,194
Deferred Services Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	1,984	2,332
Deferred License Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	1,248	1,549
Deferred Other Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	$ 417	$ 303