Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 27, 2016	Feb. 28, 2015	Feb. 27, 2016	Feb. 28, 2015
Condensed Consolidated Statements Of Comprehensive Income [Abstract]
Net income including noncontrolling interests	$ 64,342	$ 50,959	$ 318,342	$ 116,005
Other comprehensive loss, before tax:
Unrealized holding loss on available-for-sale securities, net of reclassification adjustments	(897)	(42)	(1,355)	(115)
Income tax benefit related to items of other comprehensive income	341	17	521	45
Other comprehensive loss, net of tax	(556)	(25)	(834)	(70)
Comprehensive income	63,786	50,934	317,508	115,935
Less: comprehensive income attributable to the noncontrolling interest	178	77	1,925	865
Comprehensive income attributable to Cal-Maine Foods, Inc.	$ 63,608	$ 50,857	$ 315,583	$ 115,070