Summarized Quarterly Data (unaudited) (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Feb. 02, 2013	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012	Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Summarized Quarterly Data (unaudited)
Net sales	$ 236,246,000	$ 181,414,000	$ 206,929,000	$ 230,953,000	$ 199,679,000	$ 170,280,000	$ 180,646,000	$ 208,308,000			$ 855,542,000	$ 758,913,000	$ 603,947,000
Gross profit	125,241,000	96,822,000	118,280,000	129,214,000	103,632,000	88,740,000	102,937,000	117,660,000			469,557,000	412,969,000	327,407,000
Operating income	9,945,000	5,920,000	20,318,000	32,788,000	13,567,000	6,816,000	17,711,000	30,713,000			68,971,000	68,807,000	40,662,000
Earnings from continuing operations	5,277,000	3,010,000	5,028,000	18,002,000	7,052,000	1,611,000	3,520,000	17,060,000			31,317,000	29,243,000	16,235,000
Net earnings (loss) from discontinued operations, net of taxes						13,000	(916,000)	1,040,000				137,000	62,423,000
Net earnings	5,277,000	3,010,000	5,028,000	18,002,000	7,052,000	1,624,000	2,604,000	18,100,000			31,317,000	29,380,000	78,658,000
Earnings from continuing operations per share:
Basic and Diluted (in dollars per share)	$ 0.32	$ 0.18	$ 0.30	$ 1.09	$ 0.43	$ 0.10	$ 0.21	$ 1.03			$ 1.89	$ 1.77
Earnings (loss) from discontinued operations, net of taxes per share:
Basic and Diluted (in dollars per share)					$ 0.00	$ 0.00	$ (0.06)	$ 0.06				$ 0.01
Net earnings per share:
Basic and Diluted (in dollars per share)	$ 0.32	$ 0.18	$ 0.30	$ 1.09	$ 0.43	$ 0.10	$ 0.16	$ 1.10			$ 1.89	$ 1.78
Weighted average shares outstanding:
Basic (in shares)	16,585	16,580	16,554	16,531	16,509	16,502	16,514	16,515			16,563	16,510	16,537
Diluted (in shares)	16,608	16,591	16,570	16,552	16,528	16,517	16,531	16,525			16,586	16,529	16,551
Length of fiscal year (in days)									364 days	364 days	371 days	364 days	364 days
Number of days in fourth quarter for 53-week fiscal years											98 days
Number of days in fourth quarter for 52-week fiscal years												91 days
Loss on the redemption of senior secured notes			9,100,000			800,000	8,200,000				9,143,000	9,017,000
LIFO accounting charge	4,500,000				5,800,000						4,000,000	5,800,000	3,800,000
Charge due to the change in fair value of contingent consideration	4,500,000	600,000	600,000	600,000	600,000	600,000	600,000	600,000
Charges resulting from the write-up of acquired inventory from cost to fair value pursuant to the purchase method of accounting								1,000,000
Life insurance death benefit proceeds					$ 1,200,000