Selected Quarterly Financial Data - Schedule of Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 28, 2017	Oct. 29, 2016	Jul. 30, 2016	Apr. 30, 2016	Jan. 30, 2016	Oct. 31, 2015	Aug. 01, 2015	May 02, 2015	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Net revenues	$ 586,706	$ 549,328	$ 543,381	$ 455,456	$ 647,208	$ 532,411	$ 506,942	$ 422,445	$ 2,134,871	$ 2,109,006	$ 1,867,422
Gross profit	196,654	175,819	179,839	127,475	224,261	190,750	194,263	143,418	679,787	752,692	690,774
Net income (loss)	$ 9,436	$ 2,517	$ 6,918	$ (13,470)	$ 33,302	$ 20,710	$ 29,935	$ 7,156	$ 5,401	$ 91,103	$ 91,002
Weighted-average shares used in computing basic net income (loss) per share	40,803,626	40,730,059	40,646,124	40,588,081	40,522,242	40,282,734	40,045,850	39,913,946	40,691,483	40,190,448	39,457,491
Basic net income (loss) per share	$ 0.23	$ 0.06	$ 0.17	$ (0.33)	$ 0.82	$ 0.51	$ 0.75	$ 0.18	$ 0.13	$ 2.27	$ 2.31
Weighted-average shares used in computing diluted net income (loss) per share	41,000,760	40,926,450	40,820,495	40,588,081	42,225,070	42,413,657	42,243,910	41,959,718	40,926,840	42,256,559	41,378,210
Diluted net income (loss) per share	$ 0.23	$ 0.06	$ 0.17	$ (0.33)	$ 0.79	$ 0.49	$ 0.71	$ 0.17	$ 0.13	$ 2.16	$ 2.20