DEFERRED REVENUES (Details) - USD ($) $ in Thousands	Jan. 31, 2016	Jan. 31, 2015
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	$ 97,911	$ 102,721
Deferred revenues, non-current (in "Other liabilities")	1,690	2,361
Total deferred revenues	99,601	105,082
Deferred Maintenance Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	79,533	86,381
Deferred Subscription Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	14,194	11,563
Deferred Services Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	2,332	2,813
Deferred License Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	1,549	1,890
Deferred Other Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	$ 303	$ 74