Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jan. 30, 2016	Jan. 31, 2015
Statement Of Financial Position [Abstract]
Accounts Receivable, Allowances for Doubtful Accounts	$ 272	$ 111
Preferred Stock, Par Value	$ 0.0001	$ 0.0001
Preferred Stock, Authorized	50,000,000	50,000,000
Preferred Stock, Issued	0	0
Preferred Stock, Outstanding	0	0
Common Stock, Par Value	$ 0.0001	$ 0.0001
Common Stock, Authorized	500,000,000	500,000,000
Common Stock, Shares Issued	76,711,663	75,925,507
Common Stock, Shares Outstanding	72,071,177	75,254,682
Treasury Stock, Shares	4,640,486	670,825