Condensed Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 27, 2016	Feb. 28, 2015	Feb. 27, 2016	Feb. 28, 2015
Condensed Consolidated Statements Of Income [Abstract]
Net sales	$ 449,760	$ 437,556	$ 1,605,630	$ 1,173,117
Cost of sales	317,034	325,039	998,236	886,790
Gross profit	132,726	112,517	607,394	286,327
Selling, general and administrative expense	46,955	40,492	135,356	117,542
Operating income	85,771	72,025	472,038	168,785
Other income (expense):
Interest income (expense), net	1,377	(351)	2,020	(1,362)
Royalty income	362	331	1,266	2,355
Patronage dividends	6,879	4,336	6,879	4,581
Equity in income of affiliates	1,542	817	3,574	1,462
Other, net	1,584	(84)	404	549
Total other income	11,744	5,049	14,143	7,585
Income before income taxes and noncontrolling interest	97,515	77,074	486,181	176,370
Income tax expense	33,173	26,115	167,839	60,365
Net income before noncontrolling interest	64,342	50,959	318,342	116,005
Less: Net income attributable to noncontrolling interest	178	77	1,925	865
Net income attributable to Cal-Maine Foods, Inc.	$ 64,164	$ 50,882	$ 316,417	$ 115,140
Net income per common share attributable to Cal-Maine Foods, Inc.:
Basic	$ 1.33	$ 1.06	$ 6.57	$ 2.39
Diluted	1.33	1.05	6.54	2.38
Dividends per common share	$ 0.441	$ 0.350	$ 2.175	$ 0.793
Weighted average shares outstanding:
Basic	48,204	48,137	48,177	48,134
Diluted	48,367	48,447	48,359	48,416