XML 72 R57.htm IDEA: XBRL DOCUMENT v3.7.0.1
Derivative Financial Instruments (Details 2) - USD ($)
3 Months Ended 12 Months Ended
Apr. 29, 2017
Jan. 28, 2017
Apr. 30, 2016
Jan. 30, 2016
Forward contracts designated as hedging instruments        
Net unrealized gain in accumulated other comprehensive income (loss) related to cash flow hedges $ 4,948,000 $ 5,400,000 $ (3,773,000) $ 7,252,000
Foreign exchange currency cash flow hedge unrealized gain to be recognized in cost of product sales or other income over the following 12 months 3,100,000      
Interest rate swap cash flow hedge unrealized gain to be recognized in interest expense after the following 12 months $ 400,000      
Cash flow hedges | Europe | Derivatives designated as hedging instruments        
Forward contracts designated as hedging instruments        
U.S. dollar forward contracts outstanding, maximum remaining maturity period (in months) 16 months      
Cash flow hedges | Canada | Derivatives designated as hedging instruments        
Forward contracts designated as hedging instruments        
U.S. dollar forward contracts outstanding, maximum remaining maturity period (in months) 16 months      
Foreign exchange currency contracts        
Forward contracts designated as hedging instruments        
Net unrealized gain in accumulated other comprehensive income (loss) related to cash flow hedges $ 4,500,000      
Foreign exchange currency contracts | Cash flow hedges | Europe | Derivatives designated as hedging instruments        
Forward contracts designated as hedging instruments        
Total notional amount of derivatives purchased 16,400,000      
Notional amount of derivative outstanding 100,800,000 104,200,000    
Foreign exchange currency contracts | Cash flow hedges | Canada | Derivatives designated as hedging instruments        
Forward contracts designated as hedging instruments        
Notional amount of derivative outstanding 56,200,000 66,900,000    
Interest rate swap        
Forward contracts designated as hedging instruments        
Net unrealized gain in accumulated other comprehensive income (loss) related to cash flow hedges 400,000      
Interest rate swap | Cash flow hedges | Derivatives designated as hedging instruments        
Forward contracts designated as hedging instruments        
Total notional amount of derivatives purchased   $ 21,500,000    
Notional amount of derivative outstanding $ 21,500,000      
Derivate maturity date Jan. 31, 2026      
Fixed rate of interest rate swap designated as a cash flow hedge (as a percent) 3.06%