Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 29, 2020	Mar. 02, 2019	Feb. 29, 2020	Mar. 02, 2019
Income Statement [Abstract]
Net sales	$ 345,588	$ 383,992	$ 898,276	$ 1,080,616
Cost of sales	295,760	301,551	840,198	870,511
Gross profit	49,828	82,441	58,078	210,105
Selling, general and administrative	44,231	45,009	132,434	134,750
(Gain) loss on disposal of fixed assets	385	(758)	467	(847)
Operating income (loss)	5,212	38,190	(74,823)	76,202
Other income (expense):
Interest income, net	803	1,986	3,628	5,459
Royalty income	414	565	1,173	1,784
Patronage dividends	10,096	10,482	10,096	10,482
Equity in income of unconsolidated entities	1,445	2,111	537	4,449
Other, net	79	147	1,897	372
Total other income, net	12,837	15,291	17,331	22,546
Income (loss) before income taxes and noncontrolling interest	18,049	53,481	(57,492)	98,748
Income tax (benefit) expense	4,278	13,616	(15,356)	24,134
Net income (loss) before noncontrolling interest	13,771	39,865	(42,136)	74,614
Less: Income (loss) attributable to noncontrolling interest	22	88	(64)	625
Net income (loss) attributable to Cal-Maine Foods, Inc.	$ 13,749	$ 39,777	$ (42,072)	$ 73,989
Net income (loss) per common share attributable to Cal-Maine Foods, Inc.:
Basic (in dollars per share)	$ 0.28	$ 0.82	$ (0.87)	$ 1.53
Diluted (in dollars per share)	$ 0.28	$ 0.82	$ (0.87)	$ 1.52
Weighted average shares outstanding:
Basic (in shares)	48,473	48,417	48,455	48,416
Diluted (in shares)	48,588	48,533	48,455	48,545