Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Nov. 29, 2014	Nov. 30, 2013	Nov. 29, 2014	Nov. 30, 2013
Condensed Consolidated Statements Of Comprehensive Income [Abstract]
Net income including noncontrolling interest	$ 36,861us-gaap_ProfitLoss	$ 26,247us-gaap_ProfitLoss	$ 65,046us-gaap_ProfitLoss	$ 35,145us-gaap_ProfitLoss
Other comprehensive loss, before tax:
Unrealized holding gain (loss) on available-for-sale securities, net of reclassification adjustments	(57)	304	(73)	228
Income tax (expense) benefit related to items of other comprehensive income	22	(119)	28	(89)
Other comprehensive income (loss), net of tax	(35)	185	(45)	139
Comprehensive income	36,826	26,432	65,001	35,284
Less: comprehensive income attributable to the noncontrolling interest	258	141	788	283
Comprehensive income attributable to Cal-Maine Foods, Inc.	$ 36,568us-gaap_ComprehensiveIncomeNetOfTax	$ 26,291us-gaap_ComprehensiveIncomeNetOfTax	$ 64,213us-gaap_ComprehensiveIncomeNetOfTax	$ 35,001us-gaap_ComprehensiveIncomeNetOfTax

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 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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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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