Net Loss per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Mar. 03, 2018	Feb. 25, 2017	Mar. 03, 2018	Feb. 25, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income (loss) attributable to Cal-Maine Foods, Inc.	$ 96,294	$ 4,139	$ 54,165	$ (49,807)
Basic weighted-average common shares (in shares)	48,361	48,286	48,340	48,285
Dilutive potential common shares (in shares)	48,476	48,417	48,460	48,285
Earnings Per Share, Basic and Diluted [Abstract]
Basic (in dollars per share)	$ 1.99	$ 0.09	$ 1.12	$ (1.03)
Diluted (in dollars per share)	$ 1.99	$ 0.09	$ 1.12	$ (1.03)
Restricted Shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive shares excluded from calculation of earnings per share	0	0	0	145

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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