Accrued Dividends Payable And Dividends Per Common Share (Schedule Of Dividends Per Common Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Aug. 30, 2014		Aug. 31, 2013		Jun. 01, 2013	Aug. 30, 2014 Common Stock [Member]	May 31, 2014 Common Stock [Member]	Aug. 31, 2013 Common Stock [Member]	Aug. 30, 2014 Class A Common Stock [Member]	May 31, 2014 Class A Common Stock [Member]	Aug. 31, 2013 Class A Common Stock [Member]
Dividends Payable [Line Items]
Net income attributable to Cal-Maine Foods, Inc.	$ 27,655		$ 8,756		$ (3,833)
Net income available for dividend calculation	27,655		4,923
1/3 of net income attributable to Cal-Maine Foods, Inc. available and accrued for dividend	$ 9,218		$ 1,642
Common stock outstanding (shares)	24,191,000		24,108,000			21,791,000	21,781,000	21,708,000	2,400,000	2,400,000	2,400,000
Dividends per common share	$ 0.381	[1]	$ 0.068	[1]
Percentage of net income attributable to Cal-Maine Foods, Inc.	33.33%

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