Derivatives And Financial Instruments (Schedule Of Derivative Positions And Respective Fair Values) (Details) (USD $) In Thousands, unless otherwise specified													3 Months Ended
	Oct. 31, 2012	Jan. 31, 2012	Oct. 31, 2012 Derivatives Not Designated As Hedging Instruments Short-Term Foreign Currency Forward	Jan. 31, 2012 Derivatives Not Designated As Hedging Instruments Short-Term Foreign Currency Forward	Oct. 31, 2012 Derivatives Designated As Hedging Instruments Short-Term Foreign Currency Forward	Jan. 31, 2012 Derivatives Designated As Hedging Instruments Short-Term Foreign Currency Forward	Oct. 31, 2012 Prepaid Expenses And Other Current Assets Derivatives Designated As Hedging Instruments Short-Term Foreign Currency Forward	Jan. 31, 2012 Prepaid Expenses And Other Current Assets Derivatives Designated As Hedging Instruments Short-Term Foreign Currency Forward	Oct. 31, 2012 Other Current Liabilities Derivatives Not Designated As Hedging Instruments Short-Term Foreign Currency Forward	Jan. 31, 2012 Other Current Liabilities Derivatives Not Designated As Hedging Instruments Short-Term Foreign Currency Forward	Oct. 31, 2012 Other Current Liabilities Derivatives Designated As Hedging Instruments Short-Term Foreign Currency Forward	Jan. 31, 2012 Other Current Liabilities Derivatives Designated As Hedging Instruments Short-Term Foreign Currency Forward	Oct. 31, 2012 Verint Short-Term Foreign Currency Forward
Derivatives, Fair Value [Line Items]
Derivative maturity, months													12 months
Derivative asset, notional amount					$ 36,749	$ 62,719
Derivative assets, fair value	713	978					713	978
Derivative liabilities, notional amount			12,800	14,510	45,778	16,907
Derivative liabilities, fair value	$ 824	$ 530							$ 155	$ 303	$ 669	$ 227