Accrued Dividends Payable And Dividends Per Common Share (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Feb. 28, 2015	Mar. 01, 2014	Jun. 01, 2013	Feb. 28, 2015	Mar. 01, 2014
Accrued Dividends Payable And Dividends Per Common Share [Abstract]
Percentage of net income used to compute accrued dividends				33.33%
Number of days after first, second and third quarter dividends paid				60 days
Number of days after fourth quarter dividends paid				65 days
Number of days dividends paid following record date				15 days
Net income attributable to Cal-Maine Foods, Inc.	$ 50,882	$ 42,853	$ (3,833)	$ 115,140	$ 77,715