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Quarterly Financial Information (Unaudited) - Summarized Quarterly Financial Results (Detail) - 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]
Total revenue	$ 198,970	$ 129,238	$ 115,289	$ 118,310	$ 178,683	$ 117,198	$ 103,485	$ 108,255	$ 561,807	$ 507,621	$ 460,563
Gross profit	80,518	48,101	42,512	47,663	76,670	45,752	37,873	42,602	218,794	202,897	180,816
Operating income (loss)	26,728	(932)	(3,702)	4,097	25,182	1,971	(1,871)	3,359	26,191	28,641	23,992
Net income (loss)	$ 16,602	$ (270)	$ (2,288)	$ 2,529	$ 15,554	$ 1,260	$ (1,055)	$ 2,055	$ 16,573	$ 17,814	$ 14,530
Earnings (loss) per share:
Basic	$ 0.99	$ (0.02)	$ (0.13)	$ 0.15	$ 0.91	$ 0.07	$ (0.06)	$ 0.12	$ 0.97	$ 1.03	$ 0.84
Diluted	$ 0.97	$ (0.02)	$ (0.13)	$ 0.14	$ 0.87	$ 0.07	$ (0.06)	$ 0.12	$ 0.94	$ 1.00	$ 0.82

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