Condensed Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Aug. 27, 2016	Aug. 29, 2015
Condensed Consolidated Statements Of Comprehensive Income (Loss) [Abstract]
Net income (loss) including noncontrolling interest	$ (30,980)	$ 144,090
Other comprehensive income (loss), before tax:
Unrealized holding gain (loss) on available-for-sale securities, net of reclassification adjustments	502	(300)
Income tax benefit (expense) related to items of other comprehensive income	(191)	120
Other comprehensive income (loss), net of tax	311	(180)
Comprehensive income (loss)	(30,669)	143,910
Less: comprehensive income (loss) attributable to the noncontrolling interest	(44)	1,067
Comprehensive income (loss) attributable to Cal-Maine Foods, Inc.	$ (30,625)	$ 142,843