Summarized Quarterly Data (unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ 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]
Length of fiscal year (in days)									364 days	364 days	364 days
Number of days in fourth quarter									91 days	91 days	91 days
Net sales	$ 259,583	$ 198,624	$ 250,689	$ 260,394	$ 249,031	$ 201,178	$ 227,550	$ 242,566	$ 969,290	$ 920,325	$ 849,879
Gross profit	144,738	107,889	151,086	154,392	137,441	103,865	136,271	140,372	558,105	517,949	481,480
Operating income	28,451	(1,166)	34,746	35,483	26,139	4,388	29,559	32,733	97,514	92,819	96,312
Net earnings from continuing operations	17,554	(1,390)	21,050	21,323	15,678	1,772	17,289	19,058	58,537	53,797	55,428
Loss from discontinued operations, net of taxes	(83)	(754)	(23,070)	(4,068)	116	(1,846)	(2,220)	(4,089)	(27,975)	(8,039)	(10,137)
Net earnings	$ 17,471	$ (2,144)	$ (2,020)	$ 17,255	$ 15,794	$ (74)	$ 15,069	$ 14,969	$ 30,562	$ 45,758	$ 45,291
Net earnings from continuing operations per share:
Basic (in dollars per share)	$ 1.07	$ (0.08)	$ 1.28	$ 1.30	$ 0.95	$ 0.11	$ 1.05	$ 1.16	$ 3.56	$ 3.27	$ 3.37
Diluted (in dollars per share)	1.06	(0.08)	1.27	1.29	0.95	0.11	1.05	1.16	3.54	3.27	3.36
Earnings (loss) from discontinued operations, net of taxes, per share:
Basic (in dollars per share)	(0.01)	(0.05)	(1.40)	(0.25)	0.01	(0.11)	(0.14)	(0.25)	(1.70)	(0.49)	(0.62)
Diluted (in dollars per share)	(0.01)	(0.05)	(1.39)	(0.25)	0.01	(0.11)	(0.13)	(0.25)	(1.69)	(0.49)	(0.62)
Net earnings per share:
Basic (in dollars per share)	1.06	(0.13)	(0.12)	1.05	0.96	0.00	0.92	0.91	1.86	2.79	2.75
Diluted (in dollars per share)	$ 1.05	$ (0.13)	$ (0.12)	$ 1.04	$ 0.96	$ 0.00	$ 0.92	$ 0.91	$ 1.85	$ 2.78	$ 2.75
Weighted average shares outstanding:
Basic (in shares)	16,466	16,457	16,451	16,445	16,440	16,435	16,425	16,418	16,456	16,429	16,450
Diluted (in shares)	16,600	16,457	16,547	16,525	16,502	16,435	16,460	16,450	16,559	16,471	16,482
LIFO accounting charge	$ 300				$ 2,600