Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 01, 2012	Aug. 27, 2011
Condensed Consolidated Statements Of Comprehensive Income [Abstract]
Net income including noncontrolling interests	$ 9,520	$ 3,054
Other comprehensive income, before tax:
Unrealized holding gain on available-for-sale securities, net of reclassification adjustments	429	797
Other comprehensive income, before tax	429	797
Income tax expense related to items of other comprehensive income	167	308
Other comprehensive income, net of tax	262	489
Comprehensive income	9,782	3,543
Less: comprehensive loss attributable to the noncontrolling interest	105	(63)
Comprehensive income attributable to Cal-Maine Foods, Inc.	$ 9,677	$ 3,606