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Derivatives and Hedging Activities - Summary of Gain (Loss) Recognized From Derivative Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 31, 2016
Jul. 26, 2015
Jul. 31, 2016
Jul. 26, 2015
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain recognized in AOCI on derivative (effective portion)     $ 743 $ 0
Amount of loss recognized in AOCI on derivative (effective portion) $ (1,235) $ 0    
Amount of (gain) loss reclassified from AOCI into income (effective portion) (371) 0 (458) 0
Amount of gain (loss) recognized into income on derivative (ineffective portion and amount excluded from effectiveness testing) (1) 0 4 0
SG&A        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of (gain) loss reclassified from AOCI into income (effective portion) (371) 0 (458) 0
Sell USD/Buy CHF Forward Contract [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain recognized in AOCI on derivative (effective portion)     136  
Amount of loss recognized in AOCI on derivative (effective portion) (129)      
Sell USD/Buy CHF Forward Contract [Member] | SG&A        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of (gain) loss reclassified from AOCI into income (effective portion) (31) 0 (49) 0
Amount of gain (loss) recognized into income on derivative (ineffective portion and amount excluded from effectiveness testing) 0 0 1 0
Sell USD/Buy CAD Forward Contract [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of gain recognized in AOCI on derivative (effective portion)     1,253  
Amount of loss recognized in AOCI on derivative (effective portion) (532)      
Sell USD/Buy CAD Forward Contract [Member] | SG&A        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of (gain) loss reclassified from AOCI into income (effective portion) (434) 0 (574) 0
Amount of gain (loss) recognized into income on derivative (ineffective portion and amount excluded from effectiveness testing) 1 0 5 0
Sell USD/Buy GBP Forward Contract [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of loss recognized in AOCI on derivative (effective portion) (574)   (646)  
Sell USD/Buy GBP Forward Contract [Member] | SG&A        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of (gain) loss reclassified from AOCI into income (effective portion) 94 0 165 0
Amount of gain (loss) recognized into income on derivative (ineffective portion and amount excluded from effectiveness testing) $ (2) $ 0 $ (2) $ 0