Condensed Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 02, 2014	Aug. 03, 2013	Aug. 02, 2014	Aug. 03, 2013
Income Statement [Abstract]
Net revenues	$ 433,766	$ 382,098	$ 800,020	$ 683,435
Cost of goods sold	265,857	242,872	507,762	442,332
Gross profit	167,909	139,226	292,258	241,103
Selling, general and administrative expenses	118,974	167,006	238,545	268,372
Income (loss) from operations	48,935	(27,780)	53,713	(27,269)
Interest expense	(4,346)	(1,191)	(6,402)	(2,031)
Income (loss) before income taxes	44,589	(28,971)	47,311	(29,300)
Income tax expense (benefit)	17,336	(11,136)	18,263	(11,304)
Net income (loss)	$ 27,253	$ (17,835)	$ 29,048	$ (17,996)
Weighted-average shares used in computing basic net income (loss) per share	39,436,255	38,712,000	39,294,274	38,394,013
Basic net income (loss) per share	$ 0.69	$ (0.46)	$ 0.74	$ (0.47)
Weighted-average shares used in computing diluted net income (loss) per share	41,262,629	38,712,000	40,965,628	38,394,013
Diluted net income (loss) per share	$ 0.66	$ (0.46)	$ 0.71	$ (0.47)