Net Income Per Common Share (Computation Of Basic And Diluted Net Income Per Share Attributable To The Company) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Aug. 30, 2014	Aug. 31, 2013	Jun. 01, 2013
Net Income Per Common Share [Abstract]
Net income attributable to Cal-Maine Foods, Inc.	$ 27,655	$ 8,756	$ (3,833)
Basic weighted-average common shares	24,065	24,039
Restricted shares	123	63
Common stock options	11	29
Dilutive potential common shares	24,199	24,131
Basic	$ 1.15	$ 0.36
Diluted	$ 1.14	$ 0.36