Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 29, 2020	Mar. 02, 2019	Feb. 29, 2020	Mar. 02, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss), including noncontrolling interests	$ 13,771	$ 39,865	$ (42,136)	$ 74,614
Other comprehensive income (loss), before tax:
Unrealized holding gain (loss) on available-for-sale securities, net of reclassification adjustments	(38)	1,217	(863)	967
Income tax (benefit) expense related to items of other comprehensive income	9	(296)	210	(235)
Other comprehensive income (loss), net of  tax	(29)	921	(653)	732
Comprehensive income (loss)	13,742	40,786	(42,789)	75,346
Less: comprehensive income (loss) attributable to the noncontrolling interest	22	88	(64)	625
Comprehensive income (loss) attributable to Cal-Maine Foods, Inc.	$ 13,720	$ 40,698	$ (42,725)	$ 74,721