Quarterly Results - Selected Financial Information (Details) (USD $)	3 Months Ended						4 Months Ended		12 Months Ended
	May 28, 2013	Mar. 05, 2013	Dec. 11, 2012	May 29, 2012	Mar. 06, 2012	Dec. 13, 2011	Sep. 18, 2012	Sep. 20, 2011	May 28, 2013	May 29, 2012	May 31, 2011
Quarterly Financial Information Disclosure [Abstract]
Sales	$ 48,792,000	$ 45,772,000	$ 48,523,000	$ 47,499,000	$ 46,285,000	$ 49,938,000	$ 60,625,000	$ 61,361,000	$ 203,712,158	$ 205,082,827	$ 201,716,896
Operating Profit	2,853,000	2,578,000	3,291,000	1,980,000	2,356,000	3,039,000	1,729,000	1,055,000	10,450,876	8,429,526	11,403,210
Earnings from continuing operations	2,268,000	1,748,000	2,000,000	1,567,000	1,715,000	2,059,000	958,000	460,000	6,974,101	5,801,540	7,104,556
(Loss) earnings from discontinued operations, net of tax	0	0	0	(2,746,000)	1,098,000	729,000	(158,000)	(2,734,000)	(157,705)	(3,653,329)	2,368,033
Net earnings	$ 2,268,000	$ 1,748,000	$ 2,000,000	$ (1,179,000)	$ 2,813,000	$ 2,788,000	$ 800,000	$ (2,274,000)	$ 6,816,396	$ 2,148,211	$ 9,472,589
Diluted earnings (loss) per share:
Earnings from continuing operations (in dollars per share)	$ 0.45	$ 0.34	$ 0.39	$ 0.31	$ 0.35	$ 0.42	$ 0.19	$ 0.09	$ 1.38	$ 1.17	$ 1.40
(Loss) earnings from discontinued operations (in dollars per share)	$ 0.00	$ 0.00	$ 0.00	$ (0.55)	$ 0.22	$ 0.14	$ (0.03)	$ (0.55)	$ (0.03)	$ (0.74)	$ 0.47
Diluted net earnings per share (in dollars per share)	$ 0.45	$ 0.34	$ 0.39	$ (0.24)	$ 0.57	$ 0.56	$ 0.16	$ (0.46)	$ 1.35	$ 0.43	$ 1.87