Accrued Dividends Payable And Dividends per Common Share (Schedule of Dividends) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 26, 2022	Feb. 27, 2021	Feb. 26, 2022	Feb. 27, 2021
Class of Stock [Line Items]
Net Income (Loss)	$ 39,517	$ 13,548	$ 22,664	$ 6,304
Cumulative losses to be recovered prior to payment of divided at beginning of period	(21,097)	(8,614)	(4,244)	(1,370)
Net income available for dividend	18,420	4,934	18,420	4,934
1/3 of net income attributable to Cal-Maine Foods, Inc. available for dividend	$ 6,140	$ 1,645	$ 6,140	$ 1,645
Common stock outstanding (shares)	48,940	48,856	48,940	48,856
Dividends per common share (in dollars per share)	$ 0.125	$ 0.034	$ 0.125	$ 0.034
Percentage of net income loss used to compute accrued dividends	33.33%
Common Stock [Member]
Class of Stock [Line Items]
Common stock outstanding (shares)	44,140	44,056	44,140	44,056
Class A Common Stock [Member]
Class of Stock [Line Items]
Common stock outstanding (shares)	4,800	4,800	4,800	4,800