Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2019	Sep. 01, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss), including noncontrolling interests	$ (45,721)	$ 12,743
Other comprehensive income (loss), before tax:
Unrealized holding gain (loss) on available-for-sale securities, net of reclassification adjustments	(584)	467
Income tax benefit (expense) related to items of other comprehensive loss	142	(114)
Other comprehensive income (loss), net of tax	(442)	353
Comprehensive income (loss)	(46,163)	13,096
Less: comprehensive income attributable to the noncontrolling interest	39	338
Comprehensive income (loss) attributable to Cal-Maine Foods, Inc.	$ (46,202)	$ 12,758