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Segment Reporting (Schedule of Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 31, 2016	Nov. 01, 2015	Aug. 02, 2015	May. 03, 2015	Feb. 01, 2015	Nov. 02, 2014	Aug. 03, 2014	May. 04, 2014	Jan. 31, 2016	Feb. 01, 2015	Feb. 02, 2014
Segment Reporting Information [Line Items]
Net sales	$ 140,377	$ 55,296	$ 51,677	$ 56,807	$ 110,131	$ 42,566	$ 35,860	$ 43,310	$ 304,157	$ 231,867	$ 163,089
Operating income	18,995	$ 1,646	$ 5,755	$ 2,754	14,011	$ 3,108	$ 4,137	$ 2,770	29,150	24,026	16,215
Interest Expense - Direct									306	341	248
Other income, net									181	422	86
Income before income taxes									29,025	24,107	16,053
Assets	120,620				70,949				120,620	70,949
Depreciation and amortization									2,837	1,821	1,247
Total capital expenditures									7,306	5,269	3,952
Direct [Member]
Segment Reporting Information [Line Items]
Net sales									266,341	208,909	152,896
Operating income									21,031	19,500	15,195
Assets	106,733				61,653				106,733	61,653
Depreciation and amortization									1,786	1,138	887
Total capital expenditures									3,550	2,613	2,150
Retail [Member]
Segment Reporting Information [Line Items]
Net sales									37,816	22,958	10,193
Operating income									8,119	4,526	1,020
Assets	$ 13,887				$ 9,296				13,887	9,296
Depreciation and amortization									1,051	683	360
Total capital expenditures									$ 3,756	$ 2,656	$ 1,802

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