Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Aug. 29, 2020	Aug. 31, 2019
Income Statement [Abstract]
Net sales	$ 292,782	$ 241,166
Cost of sales	276,017	262,291
Gross profit (loss)	16,765	(21,125)
Selling, general and administrative	43,965	42,475
(Gain) loss on disposal of fixed assets	23	(130)
Operating loss	(27,223)	(63,470)
Other income (expense):
Interest income, net	925	1,685
Royalty income	305	411
Equity loss of unconsolidated entities	(44)	(454)
Other, net	512	1,336
Total other income, net	1,698	2,978
Loss before income taxes	(25,525)	(60,492)
Income tax benefit	(6,126)	(14,771)
Net loss	(19,399)	(45,721)
Less: Income attributable to noncontrolling interest	0	39
Net loss attributable to Cal-Maine Foods, Inc.	$ (19,399)	$ (45,760)
Basic
Basic (in dollars per share)	$ (0.40)	$ (0.94)
Diluted (in dollars per share)	$ (0.40)	$ (0.94)
Basic
Basic (in shares)	48,501	48,446
Diluted (in shares)	48,501	48,446