Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	May 30, 2020	Jun. 01, 2019	Jun. 02, 2018
Income Statement [Abstract]
Net sales	$ 1,351,609	$ 1,361,188	$ 1,502,932
Cost of sales	1,172,021	1,138,329	1,141,886
Gross profit	179,588	222,859	361,046
Selling, general and administrative	176,237	174,795	179,316
Legal settlement expense	2,000	2,250	80,750
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	82	33	473
Operating income	1,269	45,781	100,507
Other income (expense):
Interest expense	(498)	(644)	(265)
Interest income	4,962	7,978	3,697
Patronage dividends	10,096	10,482	8,286
Equity in income of unconsolidated entities	534	4,775	3,517
Other, net	3,696	2,432	1,595
Total other income	18,790	25,024	16,830
Income before income taxes	20,059	70,805	117,337
Income tax expense (benefit)	1,731	15,743	(8,859)
Net income	18,328	55,062	126,196
Less:  Net income (loss) attributable to noncontrolling interest	(63)	833	264
Net income attributable to Cal-Maine Foods, Inc.	$ 18,391	$ 54,229	$ 125,932
Earnings Per Share [Abstract]
Basic (in dollars per share)	$ 0.38	$ 1.12	$ 2.60
Diluted (in dollars per share)	$ 0.38	$ 1.12	$ 2.60
Weighted average shares outstanding:
Basic (in shares)	48,467	48,467	48,353
Diluted (in shares)	48,584	48,589	48,468