Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	May 30, 2020	Jun. 01, 2019	Jun. 02, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 18,328	$ 55,062	$ 126,196
Other comprehensive income, before tax:
Unrealized holding gain (loss) available-for-sale securities, net of reclassification adjustments	59	1,719	(1,151)
(Increase) decrease in accumulated post-retirement benefits obligation, net of reclassification adjustments	(445)	(349)	249
Other comprehensive income (loss), before tax	(386)	1,370	(902)
Income tax expense (benefit) related to items of other comprehensive income (loss)	(110)	322	(370)
Other comprehensive income (loss), net of tax	(276)	1,048	(532)
Comprehensive income	18,052	56,110	125,664
Less: comprehensive income (loss) attributable to the noncontrolling interest	(63)	833	264
Comprehensive income attributable to Cal-Maine Foods, Inc.	$ 18,115	$ 55,277	$ 125,400