Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 25, 2017	Feb. 27, 2016	Feb. 25, 2017	Feb. 27, 2016
Statement of Comprehensive Income [Abstract]
Net income (loss), including noncontrolling interests	$ 4,131	$ 64,342	$ (49,816)	$ 318,342
Other comprehensive income (loss), before tax:
Unrealized holding gain (loss) on available-for-sale securities, net of reclassification adjustments	233	(897)	199	(1,355)
Income tax benefit (expense) related to items of other comprehensive income	(89)	341	(75)	521
Other comprehensive gain (loss), net of tax	144	(556)	124	(834)
Comprehensive income (loss)	4,275	63,786	(49,692)	317,508
Less: comprehensive income (loss) attributable to the noncontrolling interest	(8)	178	(9)	1,925
Comprehensive income (loss) attributable to Cal-Maine Foods, Inc.	$ 4,283	$ 63,608	$ (49,683)	$ 315,583