Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
May 28, 2016	May 30, 2015	May 31, 2014
Consolidated Statements Of Comprehensive Income [Abstract]
Net income including noncontrolling interests	$ 318,047	$ 162,281	$ 109,807
Other comprehensive income, before tax:
Unrealized holding gain (loss) on available-for-sale securities, net of reclassification adjustments	(25)	(143)	392
(Increase) decrease in accumulated postretirement benefits obligation, net of reclassification adjustments	(118)	(741)	255
Other comprehensive income (loss), before tax	(143)	(884)	647
Income tax (benefit) expense related to items of other comprehensive income (loss)	(73)	(345)	252
Other comprehensive income (loss), net of tax	(70)	(539)	395
Comprehensive income	317,977	161,742	110,202
Less: comprehensive income attributable to the noncontrolling interest	2,006	1,027	600
Comprehensive income attributable to Cal-Maine Foods, Inc.	$ 315,971	$ 160,715	$ 109,602

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount before tax, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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