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DERIVATIVE INSTRUMENTS DERIVATE INSTRUMENTS (Details 3) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2015
Oct. 31, 2014
Foreign currency contracts        
Derivative Instruments, Gain (Loss)        
Amount of Gain (Loss) Recognized in Other Comprehensive Income $ (791) $ 1,257 $ (394) $ 1,328
Amount of Gain (Loss) Recognized in Income (504) 2,249 (596) 2,360
Foreign currency contracts | Designated as Hedging Instrument | Net Investment Hedges        
Derivative Instruments, Gain (Loss)        
Amount of Gain (Loss) Recognized in Other Comprehensive Income 12 2,363 333 2,439
Amount of Gain (Loss) Recognized in Income 0 0 0 0
Foreign currency contracts | Designated as Hedging Instrument | Cash Flow Hedges        
Derivative Instruments, Gain (Loss)        
Amount of Gain (Loss) Recognized in Other Comprehensive Income 0 0 0 73
Amount of Gain (Loss) Recognized in Income (4) (37) (17) (72)
Foreign currency contracts | Not designated as hedging instruments        
Derivative Instruments, Gain (Loss)        
Amount of Gain (Loss) Recognized in Other Comprehensive Income 0 0 0 0
Amount of Gain (Loss) Recognized in Income (54) 2,436 751 2,582
Interest Rate Swap | Designated as Hedging Instrument | Cash Flow Hedges        
Derivative Instruments, Gain (Loss)        
Amount of Gain (Loss) Recognized in Other Comprehensive Income (803) (1,106) (727) (1,184)
Amount of Gain (Loss) Recognized in Income (446) (150) (1,330) (150)
Amount of Hedge Ineffectiveness Gain (Loss) Recognized in Income $ 100 $ 0 $ 0 $ 0