Accrued Dividends Payable And Dividends Per Common Share (Schedule Of Dividends Per Common Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 01, 2012		Aug. 27, 2011		Jun. 02, 2012
Net income attributable to Cal-Maine Foods,Inc.	$ 9,415		$ 3,117
1/3 of Net income attributable to Cal-Maine Foods, Inc.	3,138		1,039
Accrued dividends payable	$ 3,138		$ 1,039		$ 12,419
Common stock, shares outstanding	23,921		23,871
Dividends per common share	$ 0.131	[1]	$ 0.044	[1]
Percentage of net income attributable to Cal-Maine Foods, Inc.	33.33%
Common Stock [Member]
Common stock, shares outstanding	21,521		21,471		21,521
Class A Common Stock [Member]
Common stock, shares outstanding	2,400		2,400		2,400

[1] Dividends per common share = 1/3 of Net income (loss) attributable to Cal-Maine Foods, Inc. ÷ Total common stock outstanding (shares)