Derivative Instruments (Derivative Fair Values on the Condensed Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Jul. 29, 2017	Jan. 28, 2017
Foreign currency exchange forward contracts | Other current assets | Designated As Hedging Instrument
The location and amounts of derivative fair values on the Condensed Consolidated Balance Sheets
Other current assets	$ 146	$ 5,920
Foreign currency exchange forward contracts | Other current assets | Not Designated as Hedging Instruments
The location and amounts of derivative fair values on the Condensed Consolidated Balance Sheets
Other current assets	0	122
Foreign currency exchange forward contracts | Accrued expenses | Designated As Hedging Instrument
The location and amounts of derivative fair values on the Condensed Consolidated Balance Sheets
Accrued expenses	9,340	486
Foreign currency exchange forward contracts | Accrued expenses | Not Designated as Hedging Instruments
The location and amounts of derivative fair values on the Condensed Consolidated Balance Sheets
Accrued expenses	112	6
Fair Value, Measurements, Recurring
The location and amounts of derivative fair values on the Condensed Consolidated Balance Sheets
Other current assets	146	6,042
Accrued expenses	9,452	492
Level 2 | Fair Value, Measurements, Recurring
The location and amounts of derivative fair values on the Condensed Consolidated Balance Sheets
Other current assets	146	6,042
Accrued expenses	$ 9,452	$ 492