DEFERRED REVENUES (Details) - USD ($) $ in Thousands	Oct. 31, 2015	Jan. 31, 2015
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	$ 69,616	$ 102,721
Deferred revenues, non-current (in Other liabilities)	1,857	2,361
Total deferred revenues	71,473	105,082
Deferred Maintenance Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	54,678	86,381
Deferred Subscription Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	12,271	11,563
Deferred Services Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	2,056	2,813
Deferred License Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	520	1,890
Deferred Other Revenue [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenues, current	$ 91	$ 74