Document And Entity Information	3 Months Ended
	Aug. 30, 2014	Sep. 26, 2014 Common Stock [Member]	Sep. 26, 2014 Class A Common Stock [Member]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Aug. 30, 2014
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Entity Registrant Name	CAL-MAINE FOODS INC
Entity Central Index Key	0000016160
Current Fiscal Year End Date	--05-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		21,790,827	2,400,000