Derivatives and Hedging Activities - Summary of Open Foreign Currency Contracts (Details) £ in Thousands, CAD in Thousands, $ in Thousands	Oct. 29, 2017 USD ($)	Oct. 29, 2017 GBP (£)	Oct. 29, 2017 CAD
Derivative [Line Items]
Number of Instruments	6	6	6
Sell USD/Buy CAD Forward Contract [Member]
Derivative [Line Items]
Number of Instruments	3	3	3
Sell USD/Buy GBP Forward Contract [Member]
Derivative [Line Items]
Number of Instruments	3	3	3
Short [Member] | Sell USD/Buy CAD Forward Contract [Member]
Derivative [Line Items]
Notional Value	$ 4,976
Short [Member] | Sell USD/Buy GBP Forward Contract [Member]
Derivative [Line Items]
Notional Value	$ 2,762
Long [Member] | Sell USD/Buy CAD Forward Contract [Member]
Derivative [Line Items]
Notional Value | CAD			CAD 6,750
Long [Member] | Sell USD/Buy GBP Forward Contract [Member]
Derivative [Line Items]
Notional Value | £		£ 2,250