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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Narrative) (Details)
€ in Millions
1 Months Ended 3 Months Ended
Nov. 30, 2017
EUR (€)
Jan. 31, 2018
USD ($)
Jan. 31, 2017
USD ($)
Oct. 31, 2017
USD ($)
Derivative financial instruments:        
Notional principal of foreign exchange contracts   $ 149,100,000   $ 134,300,000
(Losses) gains, net of tax, related to cash flow hedges deferred in Accumulated Other Comprehensive Loss   2,200,000    
Unrealized gain (loss), net of tax, to be reclassified in next 12 months   1,200,000    
Gain (loss) on hedge ineffectiveness     $ (136,000)  
Not Designated as Hedging Instrument [Member]        
Derivative financial instruments:        
Notional principal of foreign exchange contracts   63,300,000    
Forward Contracts [Member] | Designated as Hedging Instrument [Member]        
Derivative financial instruments:        
Realized gain on net investment hedge   609,000    
Notional amount of derivatives designated as net investment hedge | € € 3.0      
Unrealized gain (loss), net of tax, recorded as cumulative translation adjustments in Accumulated Other Comprehensive Loss   (106,000)    
Euros [Member] | Designated as Hedging Instrument [Member]        
Derivative financial instruments:        
Notional principal of foreign exchange contracts   40,100,000    
Pounds Sterling [Member] | Designated as Hedging Instrument [Member]        
Derivative financial instruments:        
Notional principal of foreign exchange contracts   9,800,000    
New Taiwan Dollars [Member] | Designated as Hedging Instrument [Member]        
Derivative financial instruments:        
Notional principal of foreign exchange contracts   $ 37,400,000