Consolidated Statement Of Shareholders' Equity (USD $)	Total	Common Stock At $1 Per Share - Shares And Amount [Member]	Additional Contributed Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Treasury Shares [Member]
Balance at Jun. 02, 2009	$ 114,377,144	$ 7,582,347	$ 64,721,328	$ (6,634,422)	$ 82,306,488	$ (33,598,597)
Net earnings for the year	9,998,931				9,998,931
Other comprehensive loss, net of tax	(1,222,005)			(1,222,005)
Stock options exercised	93,926	3,417	76,969			13,540
Excess tax benefit from stock options exercised	6,144		6,144
Stock based compensation cost	355,561		355,561
Other treasury shares re-issued	74,773		40,557			34,216
Treasury shares acquired	(1,009,010)					(1,009,010)
Employee stock purchase plan	22,319		22,319
Cash dividends paid	(2,603,767)				(2,603,767)
Balance at Jun. 01, 2010	120,094,016	7,585,764	65,222,878	(7,856,427)	89,701,652	(34,559,851)
Net earnings for the year	9,472,589				9,472,589
Other comprehensive loss, net of tax	2,129,872			2,129,872
Stock options exercised	736,632	1,000	(186,434)			922,066
Issuance of restricted stock			(166,338)			166,338
Excess tax benefit from stock options exercised	223,296		223,296
Stock based compensation cost	420,922		420,922
Other treasury shares re-issued	50,546		16,309			34,237
Treasury shares acquired	(4,680,224)					(4,680,224)
Employee stock purchase plan	5,001		5,001
Cash dividends paid	(2,924,758)				(2,924,758)
Balance at May. 31, 2011	125,527,892	7,586,764	65,535,634	(5,726,555)	96,249,483	(38,117,434)
Net earnings for the year	2,148,211				2,148,211
Other comprehensive loss, net of tax	(3,279,647)			(3,279,647)
Stock options exercised	131,116		30,605			100,511
Issuance of restricted stock			(334,903)			334,903
Excess tax benefit from stock options exercised	3,800		3,800
Stock based compensation cost	938,505		690,373			248,132
Other treasury shares re-issued	30,133		8,886			21,247
Treasury shares acquired	(642,514)					(642,514)
Employee stock purchase plan	(24,615)		(24,615)
Cash dividends paid	(3,108,046)				(3,108,046)
Balance at May. 29, 2012	$ 121,724,835	$ 7,586,764	$ 65,909,780	$ (9,006,202)	$ 95,289,648	$ (38,055,155)