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Unaudited Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 02, 2019	Nov. 03, 2018	Aug. 04, 2018	May 05, 2018	Feb. 03, 2018	Oct. 28, 2017	Jul. 29, 2017	Apr. 29, 2017	Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017
Statement of Income Data:
Net sales	$ 201,158	$ 175,364	$ 181,999	$ 211,032	$ 212,143	$ 176,943	$ 166,200	$ 199,955	$ 769,553	$ 755,241	$ 695,175
Cost of sales (exclusive of depreciation shown separately below)	(126,095)	(110,420)	(110,398)	(129,413)	(131,363)	(110,094)	(102,175)	(122,390)	(476,326)	(466,022)	(428,167)
Selling, general and administrative expenses	(61,459)	(61,189)	(62,285)	(63,005)	(65,623)	(61,118)	(59,834)	(60,487)	(247,938)	(247,062)	(230,666)
Depreciation	(4,636)	(4,600)	(4,676)	(4,974)	(5,020)	(4,976)	(4,589)	(4,298)	(18,886)	(18,883)	(17,090)
Asset impairment	(152)	(180)	(942)		(430)		(77)		(1,274)	(507)	(313)
Income from operations	8,816	(1,025)	3,698	13,640	9,707	755	(475)	12,780	25,129	22,767	18,939
Interest, net	334	282	325	258	228	178	178	149
Income before income taxes	9,150	(743)	4,023	13,898	9,935	933	(297)	12,929	26,328	23,500	19,351
Income tax expense	(1,802)	237	(788)	(2,601)	(4,688)	(286)	87	(4,039)	(4,954)	(8,926)	(6,020)
Net income	$ 7,348	$ (506)	$ 3,235	$ 11,297	$ 5,247	$ 647	$ (210)	$ 8,890	$ 21,374	$ 14,574	$ 13,331
Net income (loss) per common share: (2)
Basic (in dollars per share)	$ 0.59	$ (0.04)	$ 0.24	$ 0.83	$ 0.39	$ 0.05	$ (0.01)	$ 0.60	$ 1.64	$ 1.04	$ 0.91
Diluted (in dollars per share)	$ 0.59	$ (0.04)	$ 0.24	$ 0.83	$ 0.38	$ 0.05	$ (0.01)	$ 0.60	$ 1.64	$ 1.03	$ 0.91
Weighted average shares used to compute net income (loss) per common share:
Basic	12,447,209	12,780,472	13,314,470	13,578,100	13,567,870	13,563,295	14,381,738	14,719,130	13,030,063	14,058,008	14,656,753
Diluted	12,470,560	12,780,472	13,351,321	13,631,266	13,652,330	13,614,404	14,381,738	14,779,930	13,069,694	14,115,895	14,662,272

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