Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 30, 2016	Oct. 31, 2015	Aug. 01, 2015	May. 02, 2015	Jan. 31, 2015	Nov. 01, 2014	Aug. 02, 2014	May. 03, 2014	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 765,553	$ 546,616	$ 535,582	$ 502,378	$ 725,801	$ 497,608	$ 481,420	$ 460,652	$ 2,350,129	$ 2,165,481	$ 2,219,125
Gross profit	260,554	191,089	177,190	166,444	229,998	157,558	136,025	137,373	795,277	660,954	717,707
Net income	$ 56,116	$ 26,307	$ 21,028	$ 13,062	$ 41,790	$ 14,585	$ 6,867	$ 5,083	$ 116,513	$ 68,325	$ 116,539
Earnings per basic share (USD per share)	$ 0.68	$ 0.31	$ 0.25	$ 0.15	$ 0.50	$ 0.17	$ 0.08	$ 0.06	$ 1.39	$ 0.81	$ 1.38
Earnings per diluted share (USD per share)	$ 0.67	$ 0.31	$ 0.25	$ 0.15	$ 0.49	$ 0.17	$ 0.08	$ 0.06	$ 1.38	$ 0.81	$ 1.37