Cal-Maine Foods (CALM) 10-K 19 Jul 21 2021 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	May 29, 2021	Jul. 19, 2021	Nov. 28, 2020
Document Type	10-K
Document Annual Report	true
Document Period End Date	May 29, 2021
Document Transition Report	false
Entity File Number	001-38695
Entity Registrant Name	CAL-MAINE FOODS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	64-0500378
Entity Address, Address Line One	1052 Highland Colony Pkwy, Suite 200
Entity Address, City or Town	Ridgeland
Entity Address, State or Province	MS
Entity Address, Postal Zip Code	39157
City Area Code	601
Local Phone Number	948-6813
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	CALM
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1,512,923,967
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE The information called for its 2021 year covered by this report.
Current Fiscal Year End Date	--05-29
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Central Index Key	0000016160
Common Stock [Member]
Entity Common Stock, Shares Outstanding		44,058,463
Class A Common Stock [Member]
Entity Common Stock, Shares Outstanding		4,800,000

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	May 29, 2021	May 30, 2020
Current assets:
Cash and cash equivalents	$ 57,352	$ 78,130
Investment securities available-for-sale	112,158	154,163
Receivables:
Trade receivables, net	79,066	84,976
Income tax receivable	42,516	9,884
Other	5,057	3,515
Total receivables	126,639	98,375
Inventories	218,375	187,216
Prepaid expenses and other current assets	5,407	4,367
Total current assets	519,931	522,251
Property, plant & equipment, net	589,417	557,375
Finance lease right-of-use asset, net	525	678
Operating lease right-of-use asset, net	1,724	2,531
Investments in unconsolidated entities	54,941	60,982
Goodwill	35,525	35,525
Intangible assets, net	20,341	22,816
Other long-term assets	6,770	4,536
Total assets	1,229,174	1,206,694
Current liabilities:
Trade accounts payable	52,784	55,904
Accrued wages and benefits	23,812	23,277
Accrued expenses and other liabilities	12,595	13,001
Current portion of finance lease obligation	215	205
Current portion of operating lease obligation	691	796
Total current liabilities	90,097	93,183
Long-term finance lease obligation	438	652
Long-term operating lease obligation	1,034	1,735
Other noncurrent liabilities	10,416	8,681
Deferred income taxes	114,408	92,768
Total liabilities	216,393	197,019
Commitments and contingencies - see Note 18
Stockholders' equity:
Paid-in capital	64,044	60,372
Retained earnings	975,977	975,147
Accumulated other comprehensive income (loss), net of tax	(558)	79
Common stock in treasury, at cost - 26,202 and 26,287 shares in 2021 and 2020, respectively	(27,433)	(26,674)
Total stockholders' equity	1,012,781	1,009,675
Total liabilities and stockholders' equity	1,229,174	1,206,694
Common Stock [Member]
Stockholders' equity:
Common stock	703	703
Class A Convertible Common Stock [Member]
Stockholders' equity:
Common stock	$ 48	$ 48

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Thousands	May 29, 2021	May 30, 2020
Common stock in treasury (in shares)	26,202	26,287
Common Stock [Member]
Common stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	120,000	120,000
Common stock, shares issued (in shares)	70,261	70,261
Class A Convertible Common Stock [Member]
Common stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	4,800	4,800
Common stock, shares issued (in shares)	4,800	4,800

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Income Statement [Abstract]
Net sales	$ 1,348,987	$ 1,351,609	$ 1,361,188
Cost of sales	1,188,326	1,172,021	1,138,329
Gross profit	160,661	179,588	222,859
Selling, general and administrative	183,943	178,237	177,045
Loss on disposal of fixed assets	2,982	82	33
Operating income (loss)	(26,264)	1,269	45,781
Other income (expense):
Interest expense	(213)	(498)	(644)
Interest income	2,828	4,962	7,978
Patronage dividends	9,004	10,096	10,482
Equity in income of unconsolidated entities	622	534	4,776
Other, net	4,074	3,696	2,432
Total other income	16,315	18,790	25,024
Income (loss) before income taxes	(9,949)	20,059	70,805
Income tax expense (benefit)	(12,009)	1,731	15,743
Net income	2,060	18,328	55,062
Less: Net income (loss) attributable to noncontrolling interest	0	(63)	833
Net income attributable to Cal-Maine Foods, Inc.	$ 2,060	$ 18,391	$ 54,229
Net income per share attributable to Cal-Maine Foods, Inc.:
Basic (in dollars per share)	$ 0.04	$ 0.38	$ 1.12
Diluted (in dollars per share)	$ 0.04	$ 0.38	$ 1.12
Weighted average shares outstanding:
Basic (in shares)	48,522	48,467	48,467
Diluted (in shares)	48,656	48,584	48,589

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 2,060	$ 18,328	$ 55,062
Other comprehensive income (loss), before tax:
Unrealized holding gain (loss) available-for-sale securities, net of reclassification adjustments	(736)	59	1,719
Increase in accumulated post-retirement benefits obligation, net of reclassification adjustments	(137)	(445)	(349)
Other comprehensive income (loss), before tax	(873)	(386)	1,370
Income tax expense (benefit) related to items of other comprehensive income (loss)	(236)	(110)	322
Other comprehensive income (loss), net of tax	(637)	(276)	1,048
Comprehensive income	1,423	18,052	56,110
Less: comprehensive income (loss) attributable to the noncontrolling interest	0	(63)	833
Comprehensive income attributable to Cal-Maine Foods, Inc.	$ 1,423	$ 18,115	$ 55,277

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Impact of ASC 326 [Member]	Adjusted Balance [Member]	Common Stock [Member]	Common Stock [Member]Adjusted Balance [Member]	Treasury Stock [Member]	Treasury Stock [Member]Adjusted Balance [Member]	Paid In Capital [Member]	Paid In Capital [Member]Adjusted Balance [Member]	Retained Earnings [Member]	Retained Earnings [Member]Impact of ASC 326 [Member]	Retained Earnings [Member]Adjusted Balance [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]Adjusted Balance [Member]	Noncontrolling Interest [Member]	Noncontrolling Interest [Member]Adjusted Balance [Member]	Class A [Member]Common Stock [Member]	Class A [Member]Common Stock [Member]Adjusted Balance [Member]
Balance at Jun. 02, 2018	$ 955,682			$ 703		$ (24,966)		$ 53,323		$ 924,918			$ (693)		$ 2,349		$ 48
Balance (in shares) at Jun. 02, 2018				70,261
Balance (in shares) at Jun. 02, 2018						26,430											4,800
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation plan transactions	(2,570)					$ 900		(3,534)
Stock compensation plan transactions (in shares)						(64)
Dividends	(24,620)									(24,620)
Net income	55,062									54,229					833
Other comprehensive income (loss), net of tax	1,048												1,048
Balance at Jun. 01, 2019	989,806			$ 703		$ (25,866)		56,857		954,527			355		3,182		$ 48
Balance (in shares) at Jun. 01, 2019				70,261
Balance (in shares) at Jun. 01, 2019						26,366											4,800
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation plan transactions	2,628					$ (808)		3,515
Stock compensation plan transactions (in shares)						(79)
Distributions to noncontrolling interest partners	(755)														(755)
Acquisition of noncontrolling interest in Texas Egg Products, LLC	(135)									2,229					(2,364)
Net income	18,328									18,391					(63)
Other comprehensive income (loss), net of tax	(276)												(276)
Balance at May. 30, 2020	1,009,675	$ 422	$ 1,010,097	$ 703	$ 703	$ (26,674)	$ (26,674)	60,372	$ 60,372	975,147	$ 422	$ 975,569	79	$ 79	0	$ 0	$ 48	$ 48
Balance (in shares) at May. 30, 2020				70,261	70,261
Balance (in shares) at May. 30, 2020						26,287	26,287										4,800	4,800
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock compensation plan transactions	2,823					$ (759)		3,667
Stock compensation plan transactions (in shares)						(85)
Dividends	(1,652)									(1,652)
Contributions	5							5
Net income	2,060									2,060					0
Other comprehensive income (loss), net of tax	(637)												(637)
Balance at May. 29, 2021	$ 1,012,781			$ 703		$ (27,433)		$ 64,044		$ 975,977			$ (558)		$ 0		$ 48
Balance (in shares) at May. 29, 2021				70,261
Balance (in shares) at May. 29, 2021						26,202											4,800

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Cash flows from operating activities:
Net income	$ 2,060	$ 18,328	$ 55,062
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	59,477	58,103	54,650
Deferred income taxes	22,351	10,281	6,123
Equity in income of affiliates	(622)	(534)	(4,776)
Loss on disposal of property, plant and equipment	2,982	82	33
Impairment loss on fixed assets	196	2,919	0
Stock compensation expense, net of amounts paid	3,778	3,617	3,619
Unrealized losses on investments	1,810	744	0
Gains on sales of investments	(22)	(611)	0
Purchases of equity securities	(334)	(275)	0
Sales of equity securities	55	1,212	0
Amortization of investments	890	316	962
Other	(427)	(248)	23
Change in operating assets and liabilities, net of effects from acquisitions:
(Increase) decrease in receivables and other assets	(33,487)	(28,300)	16,012
Increase in inventories	(31,159)	(9,704)	(2,285)
(Increase) decrease in accounts payable, accrued expenses and other liabilities	(1,412)	17,679	(14,338)
Net cash provided by operating activities	26,136	73,609	115,085
Cash flows from investing activities:
Purchases of investments	(88,283)	(107,234)	(176,951)
Sales of investments	129,108	204,277	209,806
Acquisition of businesses, net of cash acquired	0	(44,650)	(17,889)
Investment in unconsolidated entities	0	0	(4,273)
Distributions from unconsolidated entities	6,663	7,114	7,904
Purchases of property, plant and equipment	(95,069)	(124,178)	(67,989)
Net proceeds from disposal of property, plant and equipment	3,390	3,306	1,575
Net cash used in investing activities	(44,191)	(61,365)	(47,817)
Cash flows from financing activities:
Principal payments on long-term debt	0	(1,500)	(3,754)
Principal payments on finance lease	(205)	(196)	0
Distributions to noncontrolling interest partners	0	(755)	0
Purchase of common stock by treasury	(871)	(910)	(985)
Contributions	5	0	0
Payments of dividends	(1,652)	0	(41,713)
Net cash used in financing activities	(2,723)	(3,361)	(46,452)
Increase (decrease) in cash and cash equivalents	(20,778)	8,883	20,816
Cash and cash equivalents at beginning of year	78,130	69,247	48,431
Cash and cash equivalents at end of year	57,352	78,130	69,247
Supplemental information:
Cash paid for operating leases	929	871	0
Income taxes paid (refunds received)	(1,618)	(8,443)	36,312
Interest paid	$ 508	$ 498	$ 644

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	May 29, 2021
Summary of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1 - Summary of Significant Accounting Policies Nature of Operations Cal-Maine Foods, fresh in Ridgeland, Mississippi, is the largest producer and distributor of fresh shell eggs in the United States and sells the majority of its shell eggs in states across the southwestern, southeastern, mid-western and mid-Atlantic regions of the United States. Principles of Consolidation The consolidated over which we exercise control. All significant intercompany transactions and accounts have been eliminated in consolidation. Fiscal Year The Company’s fiscal year-end is on the Saturday closest to May 31. Each of May 29, 2021 , May 30, 2020, and June 1, 2019, included 52 Use of Estimates The preparation of the consolidated financial statements in conformity with generally accepted accounting principles ("GAAP") in the United States of America requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. The severity, magnitude and duration, as well as the economic consequences of the COVID-19 pandemic, are uncertain, rapidly changing COVID-19 and may change materially in future periods. Cash Equivalents The equivalents. Company Company has not experienced any loss in such other highly liquid investments in high quality financial institutions. We cash, concentration accounts to which Checks issued, accounts $ 7.5 11.2 Investment Securities Our investment 320”). The Company considers on the Company's ability to sell within the next 12 months, as available-for-sale. We classify these securities as current, because the amounts invested gains and losses of its for credit losses, limited losses on available-for-sale income (expenses) as as “Other long-term assets” in the Company’s Consolidated Balance Sheets. Trade Receivables Trade 2020, reserves for credit losses were $ 795 744 based Company minimizes procedures. In expected loss based May 29, 2021 and May 30, 2020 one customer accounted for approximately 23.8 % and 29.5 % of the Company’s trade accounts receivable, respectively. Inventories Inventories of value. The accumulated during a growing period of approximately 22 lives of the flocks, generally one two years . Flock mortality is charged to cost of sales as incurred. The information is not utilized by management in the operation of the Company. Property, Plant and Equipment Property, plant lives, which 15 25 3 12 maintenance are expensed property, depreciation are removed from the incurred on funds used to the asset’s estimated useful life. Leases The Company determines finance lease. We recognize the right to use an underlying asset for sheet. A lease liability is liabilities are included in our Consolidated Balance Sheet Current portion of Long-term operating lease obligation. The Company records ROU assets and lease obligations based on of the lease. When the rate implicit in the lease is calculate the present value of for leases with an initial term of 12 months or less. Lease expense for operating leases is recognized on a straight-line basis over the lease term. Investments in Unconsolidated Entities The equity method of exercises significant influence by the Company’s share of undistributed earnings or losses of these entities. Nonmarketable investments in which the Company has less than recorded at cost, and periodically reviewed for impairment. Goodwill Goodwill evaluated for impairment annually by first performing a qualitative assessment to determine whether a is necessary. After of a reporting unit any impairment. Intangible Assets Included in other intangible assets are non-compete agreements and customer 5 15 years. The amortized and the asset is no longer in use or the contract has expired. Accrued Self Insurance We use workers’ compensation, part, by considering claims experience, demographic factors, severity factors and other actuarial assumptions. Treasury Stock Treasury stock treasury issuance of based compensation plans are credited or charged to paid-in capital in excess of par value using the average-cost method. Revenue Recognition and Delivery Costs Revenue recognition is completed days of Note 14 policy. The Company believes the performance to deliver product Statements estimated returns sale using historical trends based on actual sales returns and sales. Advertising Costs The Company expensed 11.7 6.0 7.3 2019, respectively. Income Taxes Income taxes are provided using the between purposes. The Company’s policy with respect to evaluating uncertain it is must outcomes Company will interest on the portion of the tax benefit not recognized. The Company tax benefit relevant information. Based impact on the Company’s consolidated financial statements. Stock Based Compensation We account for share-based compensation in accordance with 718 performance-based shares, to be recognized in the statement of income based on their fair values. ASC 718 requires the benefits of Note Compensation Plans Business Combinations The acquisitions. These recurring methodology for non-financial believes is the market value for those assets. Loss Contingencies Certain conditions may exist as of the date will only be resolved assess contingencies related proceedings, the Company’s as the perceived merits of the amount of relief sought or expected to be sought therein. If the assessment can be estimated, potentially material loss contingency is not probable, but is reasonably possible, or is probable but cannot be estimated, then the nature of the contingent disclosed. Loss nature of the guarantee would be disclosed. The Company expenses the costs of litigation as they are incurred. New Accounting Pronouncements and Policies Effective intended instruments held by financial institutions and other organizations. The guidance replaces the prior “incurred loss” approach with an “expected based on historical experience, on a modified retrospective basis through adoption. The Company evaluated its current methodology of estimating allowance for doubtful accounts and the risk profile its receivables portfolio and developed a under the amended guidance. The Company finalized 422 thousand cumulative increase to retained earnings at May 31, 2020. No other new accounting on our Consolidated Financial Statements. Reclassification Certain presentation. These reclassifications had no effect on income.

Acquisitions

Acquisitions	12 Months Ended
	May 29, 2021
Acquisitions [Abstract]
Acquisitions	Note 2 – Acquisitions Effective on October 20, 2019, the Company acquired certain shell 45.5 capacity for 3.9 8.0 raising facilities located in Company 21.1 % 93.2 %. Mahard are included in the accompanying financial statements as of October 20, 2019. Acquisition related costs incurred during the period were immaterial to the financial statements. The following table summarizes the aggregate purchase price allocation for Mahard (in thousands): Inventory $ 5,276 Property, plant and equipment 38,433 Customer list and non-compete agreement 2,000 Liabilities assumed (194) Total purchase price $ 45,515 Effective 6.8 % interest owned subsidiary TEP for $ 135

Investment Securities

Investment Securities	12 Months Ended
	May 29, 2021
Investments Securities [Abstract]
Investment Securities	Note 3 - Investment Securities The following presents the Company’s investment securities as of May 29, 2021 and May 30, 2020 (in thousands): May 29, 2021 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value Municipal bonds $ 16,424 $ 56 $ — $ 16,480 Commercial paper 1,998 — — 1,998 Corporate bonds 80,092 608 — 80,700 Certificates of deposits 1,077 — 1 1,076 Asset backed securities 11,914 — 10 11,904 Total current investment securities $ 111,505 $ 664 $ 11 $ 112,158 Mutual funds $ 2,306 $ 1,810 $ — $ 4,116 Total noncurrent investment securities $ 2,306 $ 1,810 $ — $ 4,116 May 30, 2020 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value Municipal bonds $ 16,093 $ 86 $ — $ 16,179 Commercial paper 6,965 17 — 6,982 Corporate bonds 125,594 1,274 — 126,868 Certificates of deposits 1,492 — — 1,492 Asset backed securities 2,629 13 — 2,642 Total current investment securities $ 152,773 $ 1,390 $ — $ 154,163 Mutual funds $ 2,005 $ 744 $ — $ 2,749 Total noncurrent investment securities $ 2,005 $ 744 $ — $ 2,749 Available-for-sale Proceeds from 129.1 204.3 209.7 during fiscal 2021, 2020, and 2019, respectively. Gross realized gains for 456 278 thousand, and $ 9 19 6 and $ 33 no Actual maturities may or thousands): Estimated Fair Value Within one year $ 33,899 1-5 years 78,259 Total $ 112,158 Noncurrent Proceeds from sales 54 1.2 84 fiscal 2021, $ 611 48 no

Fair Value Measures

Fair Value Measures	12 Months Ended
	May 29, 2021
Fair Value Measures [Abstract]
Fair Value Measures	Note 4 - Fair Value Measures The Company hierarchy. The knowledgeable, and willing parties able to engage in the be paid to transfer the liability to a new obligor in a transaction between such parties, not the amount the liability with the creditor. ● Level 1 ● Level 2 directly or indirectly, including: o Quoted prices for similar assets or liabilities in active markets o Quoted prices for identical or similar assets in non-active markets o Inputs other than quoted prices that are observable for the asset or liability o Inputs derived principally from or corroborated by other observable market data ● Level 3 to the fair value of the assets or liabilities The disclosure of fair value of certain financial assets and liabilities recorded at cost are as follows: Cash and cash equivalents, accounts receivable, and accounts payable: short maturity of these instruments. Lease obligations: Assets and Liabilities Measured at Fair Value In accordance with the fair value hierarchy liabilities that are required to May 29, 2021 Level 1 Level 2 Level 3 Balance Assets Municipal bonds $ — $ 16,480 $ — $ 16,480 Commercial paper — 1,998 — 1,998 Corporate bonds — 80,700 — 80,700 Certificates of deposits — 1,076 — 1,076 Asset backed securities — 11,904 — 11,904 Mutual funds 4,116 — — 4,116 Total assets measured at fair value $ 4,116 $ 112,158 $ — $ 116,274 May 30, 2020 Level 1 Level 2 Level 3 Balance Assets Municipal bonds $ — $ 16,179 $ — $ 16,179 Commercial paper — 6,982 — 6,982 Corporate bonds — 126,868 — 126,868 Certificates of deposits — 1,492 — 1,492 Asset backed securities — 2,642 — 2,642 Mutual funds 2,749 — — 2,749 Total assets measured at fair value $ 2,749 $ 154,163 $ — $ 156,912 Our investment securities – available-for-sale classified as Level 2 consist of securities with maturities when Observable inputs for these securities are yields, credit risks, default rates, and volatility.

Inventories

Inventories	12 Months Ended
	May 29, 2021
Inventories [Abstract]
Inventories	Note 5 - Inventories Inventories consisted of the following (in thousands): May 29, 2021 May 30, 2020 Flocks, net of amortization $ 123,860 $ 110,198 Eggs and egg products 21,084 18,487 Feed and supplies 73,431 58,531 $ 218,375 $ 187,216 We grow and maintain flocks of layers (mature female chickens), pullets (female chickens under 18 weeks of age), and breeders (male and consisted of approximately 10.8 37.8 The Company expensed amortization and mortality associated with the flocks to cost of sales as follows (in thousands): May 29, 2021 May 30, 2020 June 1, 2019 Amortization $ 133,448 $ 133,379 $ 119,658 Mortality 6,769 5,823 5,161 Total flock costs charged to cost of sales $ 140,217 $ 139,202 $ 124,819

Property, Plant And Equipment

Property, Plant And Equipment	12 Months Ended
	May 29, 2021
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Note 6 - Property, Plant and Equipment Property, plant and equipment consisted of the following (in thousands): May 29, 2021 May 30, 2020 Land and improvements $ 101,174 $ 91,865 Buildings and improvements 454,332 393,195 Machinery and equipment 584,778 531,545 Construction-in-progress 72,879 126,061 1,213,163 1,142,666 Less: accumulated depreciation 623,746 585,291 $ 589,417 $ 557,375 Depreciation expense was $ 56.5 54.5 51.7 and June 1, 2019, respectively. The Company fires. Insurance recoveries received assets, clean-up and demolition all contingencies associated with recorded within “Cost of assets.” property damage during the consolidated financial statements. Included in cost 196 2.9 respectively, new facilities to meet the increasing demand for specialty eggs and to reduce production costs.

Investment in Unconsolidated En

Investment in Unconsolidated Entities	12 Months Ended
	May 29, 2021
Investment in Unconsolidated Entities [Abstract]
Investment in Unconsolidated Entities	Note 7 - Investment in Unconsolidated Entities At May 29, 2021, of accounting. Red River Valley Texas. Specialty Eggs, well as a portion of western North Carolina and eastern Alabama. Southwest Specialty Eggs, LLC owns the May 29, 50 % in are $ 49.9 54.7 Equity 622 534 4.8 included in the Consolidated Statements of Income for fiscal 2021, 2020, and 2019, respectively. The condensed For the fiscal year ended May 29, 2021 May 30, 2020 June 1, 2019 Net sales $ 119,853 $ 188,922 $ 112,396 Net income 1,596 1,064 9,490 Total assets 106,592 113,513 128,470 Total liabilities 5,850 4,655 7,600 Total equity 100,742 108,858 120,870 The “Investments Company’s investment in operating and financial activities; of this investment at May 29, 2021 and May 30, 2020 was $ 768 2.0 The following relates to the Company’s transactions with these unconsolidated affiliates (in thousands): For the fiscal year ended May 29, 2021 May 30, 2020 June 1, 2019 Sales to unconsolidated entities $ 56,765 $ 54,559 $ 58,093 Purchases from unconsolidated entities 76,059 71,475 81,685 Distributions from unconsolidated entities 6,663 7,114 7,904 May 29, 2021 May 30, 2020 Accounts receivable from unconsolidated entities 2,404 $ 4,935 Accounts payable to unconsolidated entities 4,161 5,706

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	May 29, 2021
Goodwill and Other Intangible Assets [Abstract]
Goodwill and Other Intangible Assets	Note 8 - Goodwill and Other Intangible Assets Goodwill and other intangibles consisted of the following (in thousands): Other Intangibles Franchise Customer Non-compete Right of Water Total Goodwill rights relationships agreements Use rights Trademark intangibles Balance June 1, 2019 $ 35,525 $ 19,955 $ 2,504 $ 297 $ — $ 720 $ 286 $ 59,287 Additions — — 1,000 1,000 — — — 2,000 Amortization — (1,628) (1,150) (118) — — (50) (2,946) Balance May 30, 2020 35,525 18,327 2,354 1,179 — 720 236 58,341 Additions — — — — 39 — — 39 Amortization — (1,628) (666) (160) (10) — (50) (2,514) Balance May 29, 2021 $ 35,525 $ 16,699 $ 1,688 $ 1,019 $ 29 $ 720 $ 186 $ 55,866 For the Other Intangibles listed above, the gross carrying amounts and accumulated amortization are as follows (in thousands): May 29, 2021 May 30, 2020 Gross carrying Accumulated Gross carrying Accumulated amount amortization amount amortization Other intangible assets: Franchise rights $ 29,284 $ (12,585) $ 29,284 $ (10,957) Customer relationships 9,644 (7,956) 20,544 (18,190) Non-compete agreements 1,450 (431) 1,450 (271) Right of use intangible 229 (200) 191 (191) Water rights * 720 — 720 — Trademark 400 (214) 400 (164) Total $ 41,727 $ (21,386) $ 52,589 $ (29,773) * Water rights are an indefinite life intangible asset. No significant residual value and 2019 totaled $ 2.5 2.9 2.8 The following table presents the total estimated amortization of intangible assets for the five succeeding years (in thousands): For fiscal year Estimated amortization expense 2022 $ 2,220 2023 2,206 2024 2,170 2025 2,040 2026 2,015 Thereafter 8,970 Total $ 19,621

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	May 29, 2021
Employee Benefit Plans [Abstract]
Employee Benefit Plans	Note 9 - Employee Benefit Plans The Company maintains a medical plan that is qualified under Section 401(a) of the Internal Revenue Code and is not subject to tax under present income tax laws. The plan is Company insurance 225,000 incurred but not reported claims were approximately $ 21.7 17.8 . million, and $ 18.1 and 2019, respectively. 2.4 1.7 29, 2021 and May 30, 2020, respectively. The Company has Plan at a rate of 3 % of participants' eligible compensation, Directors. Contributions contributions to the Plan were 3.8 3.7 no t make direct contributions of common stock are paid by using stock on the NASDAQ to pay benefits to Plan participants. Participants may make contributions to the Plan up allowed by the Internal Revenue Service regulations. The Company does not match participant contributions. The beginning when the officers reach age 65 upon deferred agreements 170 150 129 liability recorded related to these agreements was $ 1.4 In December 2006, the Company adopted an additional deferred compensation plan to provide deferred compensation to named officers of 279 266 267 2021, 2020, and 2019, respectively. Payments made under the plan were $ 55 1.2 respectively. The 4.1 2.7 respectively. Deferred compensation expense for both plans totaled $ 1.6 621 377 2019, respectively. Postretirement Medical Plan The Company maintains employees and which spouses, who retired prior to or after May 1, 2012 must participate in Medicare Plans A, B, and D. The plan is recognizes the funded status status in the year the change occurs through comprehensive income. Additionally, this expense is recognized on an accrual basis over the employees’ approximate period of employment. 3.4 and May 30, 2020. The remaining disclosures associated with ASC 715 are immaterial to the Company’s financial statements.

Credit Facility

Credit Facility	12 Months Ended
	May 29, 2021
Credit Facility [Abstract]
Credit Facility	Note 10 - Credit Facility For fiscal years 2021, 2020 and 2019, interest was $ 213 498 644 On July 10, 2018, 100.0 with five -year Company, $ 125.0 No $ 4.1 The interest rate is based, at the Company’s plus the Applicable Margin. The interbank market for “Base Rate” means 0.5 % per annum, prime rate of interest established 1.00 % per annum, subject to certain interest rate floors. The “Applicable Margin” means 0 % to 0.75 % per annum for Base Rate Loans and 1.00 % to 1.75 % per annum for Eurodollar Rate Loans, in each case depending upon the average outstanding balance at the quarterly pricing date. The Company will pay a commitment fee of 0.2 % on the unused portion of the facility. The Revolving Credit Facility is guaranteed by all the current and future wholly-owned direct and of guarantors’ accounts, products) and deposit accounts maintained with the administrative agent. The credit agreement for the Revolving Credit Facility contains customary covenants, including liens, and additional maintenance of two 2.00 expenditures of $ 150.0 sons-in-law or grandchildren, foregoing, or any family limited partnership, similar limited liability company or such entity is held by 50 % of the Company’s these Company’s Company is allowed to 75.0 agreement and the Company has availability of at least $ 20.0 The credit agreement occurrence of an event of default, including acceleration of the amounts due and foreclosure of the collateral. At May 29, 2021, we were in compliance with the covenant requirements of the Revolving Credit Facility.

Accrued Dividends Payable And D

Accrued Dividends Payable And Dividends per Common Share	12 Months Ended
	May 29, 2021
Accrued Dividends Payable And Dividends Per Common Share [Abstract]
Accrued Dividends Payable And Dividends Per Common Share	Note 11 - Accrued Dividends Payable and Dividends per Common Share We accrue dividends at pays a dividend to shareholders the Company reports net income attributable to Cal-Maine Foods, to one-third ( 1/3 ) of such quarterly income. 60 th day following the last of such quarter, except for the fourth on the 65 th day after the 15 th day following the which the Company does not report net income attributable subsequent profitable quarter until which a dividend was $ 4.2 On our consolidated statement of income, we determine dividends per common share in accordance with the computation in the following table (in thousands, except per share data): 13 Weeks Ended 52 Weeks Ended May 29, 2021 May 30, 2020 May 29, 2021 May 30, 2020 Net income (loss) attributable to Cal-Maine Foods, Inc. $ (4,244) $ 60,463 $ 2,060 $ 18,391 Cumulative losses to be recovered prior to payment of divided at beginning of period — (61,833) (1,370) (19,761) Net income attributable to Cal-Maine Foods, Inc. available for dividend $ — $ — $ — $ — 1/3 of net income attributable to Cal-Maine Foods, Inc. available for dividend $ — Common stock outstanding (shares) 44,058 Class A common stock outstanding (shares) 4,800 Total common stock outstanding (shares) 48,858 Dividends per common share* $ — $ — $ 0.034 $ — *Dividends per 1/3 common stock outstanding (shares).

Equity

Equity	12 Months Ended
	May 29, 2021
Equity [Abstract]
Equity	Note 12 - Equity The Company has two or the Company's submitted to a one Stock entitled to ten Stock and Class in stock, Stock) as the holders of dissolution, or winding-up of the Company, the holders A Common Class subdivided unless declared and paid on Class A Common Stock dividend is declared and paid to Common Stock concurrently. Each share of one The (“Immediate Family Members”) and arrangements and Stock, with ten one Transferees”). companies that must have a relationship, specifically Member. convert into Common Stock with one which all 4,300,000 shares of Transferees, or (b) if less than 4,600,000 owned by Immediate Family Members and/or Permitted Transferees.

Net Income per Common Share

Net Income per Common Share	12 Months Ended
	May 29, 2021
Net Income per Common Share [Abstract]
Net Income per Common Share	Note 13 - Net Income per Common Share Basic net income per share attributable Common Stock common shares outstanding during the relevant period adjusted for the dilutive effect of share-based awards. The following table provides per common share attributable to Cal-Maine Foods, Inc. (amounts in thousands, except per share data): May 29, 2021 May 30, 2020 June 1, 2019 Numerator Net income $ 2,060 $ 18,328 $ 55,062 Less: Net income (loss) attributable to noncontrolling interest — (63) 833 Net income attributable to Cal-Maine Foods, Inc. $ 2,060 $ 18,391 $ 54,229 Denominator Weighted-average common shares outstanding, basic 48,522 48,467 48,467 Effect of dilutive securities of restricted shares 134 117 122 Weighted-average common shares outstanding, diluted 48,656 48,584 48,589 Net income per common share attributable to Cal-Maine Foods, Inc. Basic $ 0.04 $ 0.38 $ 1.12 Diluted $ 0.04 $ 0.38 $ 1.12

Revenue Recognition

Revenue Recognition	12 Months Ended
	May 29, 2021
Revenue Recognition [Abstract]
Revenue Recognition	Note 14 - Revenue Recognition Satisfaction of Performance Obligation The vast majority of the Company’s revenue is derived from agreements with customers based on the customer placing an order for products. Pricing for establishes the contract for that order. Revenues are shell eggs The Company’s performance obligation with the the order. Costs Consolidated Statements of 52.7 52.2 53.6 2019, respectively. Returns and Refunds Some of our contracts include a guaranteed customer is unable to sell before expiration. data and corresponding reduction in trade accounts receivable. Sales Incentives Provided to Customers The Company periodically offers (e.g., percentage current purchase), and other similar offers. Current sales price price based on estimated future redemption rates. Redemption rates are estimated using the Company’s historical experience for similar inducement offers. Current discount and inducement offers are presented as a net amount in ‘‘Net sales.’’ Disaggregation of Revenue The following table provides revenue disaggregated by product category (in thousands): 13 Weeks Ended 52 Weeks Ended May 29, 2021 May 30, 2020 May 29, 2021 May 30, 2020 Conventional shell egg sales $ 205,987 $ 311,380 $ 766,284 $ 830,278 Specialty shell egg sales 131,243 133,347 539,780 485,465 Egg products 10,997 7,204 36,733 31,414 Other 1,571 1,402 6,190 4,452 $ 349,798 $ 453,333 $ 1,348,987 $ 1,351,609 Contract Costs The Company can incur costs to obtain or fulfill a contract with a customer. one year, they are expensed as incurred. is amortized over the contract life as a reduction in net sales. As of May 29, 2021 the balance for contract assets is immaterial. Contract Balances The Company receives payment from customers based on specified terms that are generally delivery. There are rarely contract assets or liabilities related to performance under the contract. Concentration of Credit Risks Our largest customer, Walmart 29.8 %, 32.1 % and 33.7 % of net sales dollars for fiscal 2021, 2020, and 2019, respectively. H-E-B, LP accounted for 10.1 % of net sales dollars for fiscal 2020.

Leases

Leases	12 Months Ended
	May 29, 2021
Leases [Abstract]
Leases	Note 15 - Leases Expenses related to operating leases, amortization of finance lease ROU assets and finance lease interest are included in Cost of sales, Selling general and administrative expense, and Interest expense in the Consolidated Statements of Income. The Company’s lease cost consists of the following (in thousands): 13 Weeks Ended May 29, 2021 52 Weeks Ended May 30, 2020 Operating Lease cost $ 226 $ 929 Finance Lease cost Amortization of right-of-use asset $ 43 $ 168 Interest on lease obligations $ 7 $ 34 Short term lease cost $ 1,057 $ 3,771 Future minimum lease payments under non-cancelable leases are as follows (in thousands): As of May 29, 2021 Operating Leases Finance Leases 2022 $ 802 $ 239 2023 539 239 2024 380 219 2025 130 — 2026 26 — Thereafter 5 — Total 1,882 697 Less imputed interest (157) (44) Total $ 1,725 $ 653 The weighted-average Sheet are as follows: As of May 29, 2021 Operating Leases Finance Leases Weighted-average remaining lease term (years) 2.8 2.5 Weighted-average discount rate 5.9 % 4.9 %

Stock Compensation Plans

Stock Compensation Plans	12 Months Ended
	May 29, 2021
Stock Compensation Plans [Abstract]
Stock Compensation Plans	Note 16 - Stock Compensation Plans On Incentive Plan selected individuals who are expected to contribute to our long-term success. The maximum number of shares of common stock available for 2,000,000 1,126,188 authorized employee member of the Company’s Board of Directors, and any consultant who or one of our subsidiaries (except for incentive stock options, which may be granted only to our employees). The only outstanding awards under the LTIP the grant date, or upon death or disability, change in control, or retirement (subject to certain requirements). The restricted stock contains no other service or performance conditions. Restricted stock is awarded in the name of the recipient and, except for the right of disposal, constitutes period of closing price and is amortized on a straight-line basis over the vesting period. Forfeitures are recognized as they occur. Total 3.8 3.6 3.6 respectively. Our unrecognized compensation expense as a result of non-vested shares 6.6 6.3 May 30, 2020. The 2.1 years. A summary of our equity award activity and related information for our restricted stock is as follows: Number of Shares Weighted Average Date Fair Value Outstanding, June 1, 2019 248,412 $ 42.20 Granted 104,566 38.25 Vested (77,801) 43.00 Forfeited (2,131) 43.20 Outstanding, May 30, 2020 273,046 $ 41.36 Granted 112,860 37.82 Vested (79,328) 43.96 Forfeited (4,431) 40.12 Outstanding, May 29, 2021 302,147 $ 39.37

Income Taxes

Income Taxes	12 Months Ended
	May 29, 2021
Income Taxes [Abstract]
Income Taxes	Note 17 - Income Taxes Income tax expense (benefit) consisted of the following: Fiscal year ended May 29, 2021 May 30, 2020 June 1, 2019 Current: Federal $ (35,090) $ (6,750) $ 8,160 State 730 (1,800) 1,460 (34,360) (8,550) 9,620 Deferred: Federal 21,658 8,872 4,843 State 693 1,409 1,280 22,351 10,281 6,123 $ (12,009) $ 1,731 $ 15,743 Significant components of the Company’s deferred tax liabilities and assets were as follows: May 29, 2021 May 30, 2020 Deferred tax liabilities: Property, plant and equipment $ 82,508 $ 60,645 Inventories 31,501 28,075 Investment in affiliates 7,670 8,099 Other comprehensive income — 214 Other 5,648 5,002 Total deferred tax liabilities 127,327 102,035 Deferred tax assets: Accrued expenses 3,728 3,376 State operating loss carryforwards 3,416 792 Other comprehensive income 497 — Other 5,278 5,099 Total deferred tax assets 12,919 9,267 Net deferred tax liabilities $ 114,408 $ 92,768 The differences between income tax expense (benefit) at the Company’s effective income tax rate and income tax expense at the statutory federal income tax rate were as follows: Fiscal year end May 29, 2021 May 30, 2020 June 1, 2019 Statutory federal income tax $ (2,087) $ 4,226 $ 14,694 State income taxes, net 1,124 (309) 2,164 Domestic manufacturers deduction 3,566 684 — Enacted net operating loss carryback provision (16,014) (3,041) — Tax exempt interest income (50) (111) (197) Other, net 1,452 282 (918) $ (12,009) $ 1,731 $ 15,743 On March 27, 2020, the Coronavirus Aid, Relief, contains several income effects of the COVID-19 pandemic. The most significant provision of the CARES Act that materially affects our accounting for income taxes includes a five-year our fiscal years 2019 through 2021. Our financial statements for the fiscal year ended May 29, 2021 were materially affected by the changes enacted by the CARES Act. As a result of the for fiscal tax rate was 21% to periods in which the statutory federal income tax rate was 35%. recorded a 16.0 2021. Because Domestic Production 3.6 fiscal 2021 to account for the reduced taxable income. Federal and state 995 32 37.4 respectively. 2.6 8.4 418 2020, and 2019, respectively. The Company may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits the tax resolution. As of May 29, 2021, we are under audit by the Internal Revenue Service (IRS) for the fiscal years 2013 through 2015. Although we are subject to income tax As during adjustments reasonably possible that an additional decrease 1.4 development credits may be necessary within the coming year. open to examination by federal and state taxing jurisdictions to which we are subject.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	May 29, 2021
Commitments and Contingencies [Abstract]
Contingencies	Note 18 - Commitments and Contingencies Financial Instruments The Company maintained standby letters of credit 4.1 Company's Revolving LOCs are recorded as a liability on the Consolidated Balance Sheets. State of Texas v. On April 23, 2020, the Company Texas v. of Harris County, Texas. of the State claimed emergency and made the Company and WCF to prevent further alleged violations of the DTPA, along with over $ 100,000 2020, the the State opening Appeals has not ruled on these submissions. Management believes the risk of material loss related to this matter to be remote. Bell et al. v. Cal-Maine Foods et al. On April 30, 2020, the Company was named cv-461, in the Western District of Texas, and farms. during the COVID-19 state sold, distributed, enjoin the Company and other declaration 10,000 250,000 impacting anyone dismiss believes the risk of material loss related to this matter to be remote. Kraft Foods Global, Inc. et al. v. United Egg Producers, Inc. et al. As previously cases involving plaintiffs who sought substantial damages allegedly arising from the purchase of egg products remaining plaintiffs The Kellogg Company. On September 13, 2019, the United States District 2002, Producers, Inc. et al., violated Section 1 of the the prices that plaintiffs paid of the United Egg Egg Products Plaintiffs money damages. appears that the case will not be tried until later in 2021 or 2022. In addition, dismissing all or results entered a judgment on the filing. The Company intends to continue to defend the remaining case with the Egg Products Plaintiffs on resolution of management believes that Plaintiffs, at range of factors, including the following, among others: the matter is in the early stages of preparing for trial following any trial will be before a to be resolved; and State of Oklahoma Watershed Pollution Litigation On June 18, against Cal-Maine Foods, Inc. and Tyson Foods, Inc. and affiliates, Inc. and its chicken litter the complaint seeks injunctive relief Cal-Maine Foods, Inc. discontinued will be materially affected the litigation began, Cal-Maine Foods, Inc. 100 % of the membership interests is an ongoing commercial shell egg in the litigation. The trial in the case began in September 2009 and concluded in February 2010. has not yet issued its ruling. Management believes the risk of material loss related to this matter to be remote. Other Matters In addition to the above, outcome of these matters final outcome should not have a material effect on the Company’s consolidated results of operations or financial position.

Related Party Transaction

Related Party Transaction	12 Months Ended
	May 29, 2021
Related Party Transactions [Abstract]
Related Party Transaction	Note 19 - Related Party Transaction On August 24, 2020, Jr. (together, the “Selling 6,900,000 held by them, pursuant to a previously disclosed Agreement Regarding Common Stock (the “Agreement”) filed this report. Mrs. estate taxes related to the settlement of Mr. Company’s effective shelf registration statement on Form S-3 (File dated October 9, 2018, and a related Prospectus Supplement dated and Exchange Commission. and thus the Company (not including the paid by the Selling Stockholders) paid by 1.1 reimbursed the Company $ 551

Subsequent Events

Subsequent Events	12 Months Ended
	May 29, 2021
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Note 20 – Subsequent Events Effective on 48.5 50 % membership interest including certain River owns and 1.7 free pullet capacity, feed mill, processing plant, related offices and outbuildings and 400

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	May 29, 2021
Schedule II - Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts Disclosure	SCHEDULE II - VALUATION Fiscal Years (in thousands) Description Balance at Beginning of Period Charged to Cost and Expense Write-off of Accounts Balance at End of Period Year ended May 29, 2021 Allowance for doubtful accounts $ 743 $ 135 $ 83 $ 795 Year ended May 30, 2020 Allowance for doubtful accounts $ 206 $ 550 $ 13 $ 743 Year ended June 1, 2019 Allowance for doubtful accounts $ 268 $ 42 $ 104 $ 206

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policy)	12 Months Ended
	May 29, 2021
Summary of Significant Accounting Policies [Abstract]
Nature of Operations	Nature of Operations Cal-Maine Foods, fresh in Ridgeland, Mississippi, is the largest producer and distributor of fresh shell eggs in the United States and sells the majority of its shell eggs in states across the southwestern, southeastern, mid-western and mid-Atlantic regions of the United States.
Principles of Consolidation	Principles of Consolidation The consolidated over which we exercise control. All significant intercompany transactions and accounts have been eliminated in consolidation.
Fiscal Year	Fiscal Year The Company’s fiscal year-end is on the Saturday closest to May 31. Each of May 29, 2021 , May 30, 2020, and June 1, 2019, included 52
Use of Estimates	Use of Estimates The preparation of the consolidated financial statements in conformity with generally accepted accounting principles ("GAAP") in the United States of America requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. The severity, magnitude and duration, as well as the economic consequences of the COVID-19 pandemic, are uncertain, rapidly changing COVID-19 and may change materially in future periods.
Cash Equivalents	Cash Equivalents The equivalents. Company Company has not experienced any loss in such other highly liquid investments in high quality financial institutions. We cash, concentration accounts to which Checks issued, accounts $ 7.5 11.2
Investment Securities	Investment Securities Our investment 320”). The Company considers on the Company's ability to sell within the next 12 months, as available-for-sale. We classify these securities as current, because the amounts invested gains and losses of its for credit losses, limited losses on available-for-sale income (expenses) as as “Other long-term assets” in the Company’s Consolidated Balance Sheets.
Trade Receivables	Trade Receivables Trade 2020, reserves for credit losses were $ 795 744 based Company minimizes procedures. In expected loss based May 29, 2021 and May 30, 2020 one customer accounted for approximately 23.8 % and 29.5 % of the Company’s trade accounts receivable, respectively.
Inventories	Inventories Inventories of value. The accumulated during a growing period of approximately 22 lives of the flocks, generally one two years . Flock mortality is charged to cost of sales as incurred. The information is not utilized by management in the operation of the Company.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant lives, which 15 25 3 12 maintenance are expensed property, depreciation are removed from the incurred on funds used to the asset’s estimated useful life.
Leases	Leases The Company determines finance lease. We recognize the right to use an underlying asset for sheet. A lease liability is liabilities are included in our Consolidated Balance Sheet Current portion of Long-term operating lease obligation. The Company records ROU assets and lease obligations based on of the lease. When the rate implicit in the lease is calculate the present value of for leases with an initial term of 12 months or less. Lease expense for operating leases is recognized on a straight-line basis over the lease term.
Investments in Unconsolidated Entities	Investments in Unconsolidated Entities The equity method of exercises significant influence by the Company’s share of undistributed earnings or losses of these entities. Nonmarketable investments in which the Company has less than recorded at cost, and periodically reviewed for impairment.
Goodwill	Goodwill Goodwill evaluated for impairment annually by first performing a qualitative assessment to determine whether a is necessary. After of a reporting unit any impairment.
Intangible Assets	Intangible Assets Included in other intangible assets are non-compete agreements and customer 5 15 years. The amortized and the asset is no longer in use or the contract has expired.
Accrued Self Insurance	Accrued Self Insurance We use workers’ compensation, part, by considering claims experience, demographic factors, severity factors and other actuarial assumptions.
Treasury Stock	Treasury Stock Treasury stock treasury issuance of based compensation plans are credited or charged to paid-in capital in excess of par value using the average-cost method.
Revenue Recognition and Delivery Costs	Revenue Recognition and Delivery Costs Revenue recognition is completed days of Note 14 policy. The Company believes the performance to deliver product Statements estimated returns sale using historical trends based on actual sales returns and sales.
Advertising Costs	Advertising Costs The Company expensed 11.7 6.0 7.3 2019, respectively.
Income Taxes	Income Taxes Income taxes are provided using the between purposes. The Company’s policy with respect to evaluating uncertain it is must outcomes Company will interest on the portion of the tax benefit not recognized. The Company tax benefit relevant information. Based impact on the Company’s consolidated financial statements.
Stock Based Compensation	Stock Based Compensation We account for share-based compensation in accordance with 718 performance-based shares, to be recognized in the statement of income based on their fair values. ASC 718 requires the benefits of Note Compensation Plans
Business Combinations	Business Combinations The acquisitions. These recurring methodology for non-financial believes is the market value for those assets.
Loss Contingencies	Loss Contingencies Certain conditions may exist as of the date will only be resolved assess contingencies related proceedings, the Company’s as the perceived merits of the amount of relief sought or expected to be sought therein. If the assessment can be estimated, potentially material loss contingency is not probable, but is reasonably possible, or is probable but cannot be estimated, then the nature of the contingent disclosed. Loss nature of the guarantee would be disclosed. The Company expenses the costs of litigation as they are incurred.
New Accounting Pronouncements and Policies	New Accounting Pronouncements and Policies Effective intended instruments held by financial institutions and other organizations. The guidance replaces the prior “incurred loss” approach with an “expected based on historical experience, on a modified retrospective basis through adoption. The Company evaluated its current methodology of estimating allowance for doubtful accounts and the risk profile its receivables portfolio and developed a under the amended guidance. The Company finalized 422 thousand cumulative increase to retained earnings at May 31, 2020. No other new accounting on our Consolidated Financial Statements.
Reclassification	Reclassification Certain presentation. These reclassifications had no effect on income.

Fair Value Measures (Policy)

Fair Value Measures (Policy)	12 Months Ended
	May 29, 2021
Fair Value Measures [Abstract]
Fair Value Measurement	The Company hierarchy. The knowledgeable, and willing parties able to engage in the be paid to transfer the liability to a new obligor in a transaction between such parties, not the amount the liability with the creditor. ● Level 1 ● Level 2 directly or indirectly, including: o Quoted prices for similar assets or liabilities in active markets o Quoted prices for identical or similar assets in non-active markets o Inputs other than quoted prices that are observable for the asset or liability o Inputs derived principally from or corroborated by other observable market data ● Level 3 to the fair value of the assets or liabilities The disclosure of fair value of certain financial assets and liabilities recorded at cost are as follows: Cash and cash equivalents, accounts receivable, and accounts payable: short maturity of these instruments.

Acquisition (Tables)

Acquisition (Tables)	12 Months Ended
	May 29, 2021
Acquisitions [Abstract]
Allocation of Purchase Price	Inventory $ 5,276 Property, plant and equipment 38,433 Customer list and non-compete agreement 2,000 Liabilities assumed (194) Total purchase price $ 45,515

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	May 29, 2021
Investments Securities [Abstract]
Schedule Of Investment Securities	May 29, 2021 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value Municipal bonds $ 16,424 $ 56 $ — $ 16,480 Commercial paper 1,998 — — 1,998 Corporate bonds 80,092 608 — 80,700 Certificates of deposits 1,077 — 1 1,076 Asset backed securities 11,914 — 10 11,904 Total current investment securities $ 111,505 $ 664 $ 11 $ 112,158 Mutual funds $ 2,306 $ 1,810 $ — $ 4,116 Total noncurrent investment securities $ 2,306 $ 1,810 $ — $ 4,116 May 30, 2020 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value Municipal bonds $ 16,093 $ 86 $ — $ 16,179 Commercial paper 6,965 17 — 6,982 Corporate bonds 125,594 1,274 — 126,868 Certificates of deposits 1,492 — — 1,492 Asset backed securities 2,629 13 — 2,642 Total current investment securities $ 152,773 $ 1,390 $ — $ 154,163 Mutual funds $ 2,005 $ 744 $ — $ 2,749 Total noncurrent investment securities $ 2,005 $ 744 $ — $ 2,749
Schedule Of Contractual Maturities Of Investment Securities	Estimated Fair Value Within one year $ 33,899 1-5 years 78,259 Total $ 112,158

Fair Value Measures (Tables)

Fair Value Measures (Tables)	12 Months Ended
	May 29, 2021
Fair Value Measures [Abstract]
Schedule Of Assets Measured At Fair Value On A Recurring Basis	May 29, 2021 Level 1 Level 2 Level 3 Balance Assets Municipal bonds $ — $ 16,480 $ — $ 16,480 Commercial paper — 1,998 — 1,998 Corporate bonds — 80,700 — 80,700 Certificates of deposits — 1,076 — 1,076 Asset backed securities — 11,904 — 11,904 Mutual funds 4,116 — — 4,116 Total assets measured at fair value $ 4,116 $ 112,158 $ — $ 116,274 May 30, 2020 Level 1 Level 2 Level 3 Balance Assets Municipal bonds $ — $ 16,179 $ — $ 16,179 Commercial paper — 6,982 — 6,982 Corporate bonds — 126,868 — 126,868 Certificates of deposits — 1,492 — 1,492 Asset backed securities — 2,642 — 2,642 Mutual funds 2,749 — — 2,749 Total assets measured at fair value $ 2,749 $ 154,163 $ — $ 156,912

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	May 29, 2021
Inventories [Abstract]
Schedule of Inventories	May 29, 2021 May 30, 2020 Flocks, net of amortization $ 123,860 $ 110,198 Eggs and egg products 21,084 18,487 Feed and supplies 73,431 58,531 $ 218,375 $ 187,216
Schedule of Cost of Sales Amortization and Mortality	May 29, 2021 May 30, 2020 June 1, 2019 Amortization $ 133,448 $ 133,379 $ 119,658 Mortality 6,769 5,823 5,161 Total flock costs charged to cost of sales $ 140,217 $ 139,202 $ 124,819

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	May 29, 2021
Property, Plant and Equipment [Abstract]
Schedule Of Property, Plant And Equipment	May 29, 2021 May 30, 2020 Land and improvements $ 101,174 $ 91,865 Buildings and improvements 454,332 393,195 Machinery and equipment 584,778 531,545 Construction-in-progress 72,879 126,061 1,213,163 1,142,666 Less: accumulated depreciation 623,746 585,291 $ 589,417 $ 557,375

Investment in Unconsolidated _2

Investment in Unconsolidated Entities (Tables)	12 Months Ended
	May 29, 2021
Investment in Unconsolidated Entities [Abstract]
Summary of Condensed Consolidated Financial Information for Unconsolidated Joint Ventures	For the fiscal year ended May 29, 2021 May 30, 2020 June 1, 2019 Net sales $ 119,853 $ 188,922 $ 112,396 Net income 1,596 1,064 9,490 Total assets 106,592 113,513 128,470 Total liabilities 5,850 4,655 7,600 Total equity 100,742 108,858 120,870
Schedule of Transactions With Unconsolidated Affiliates	For the fiscal year ended May 29, 2021 May 30, 2020 June 1, 2019 Sales to unconsolidated entities $ 56,765 $ 54,559 $ 58,093 Purchases from unconsolidated entities 76,059 71,475 81,685 Distributions from unconsolidated entities 6,663 7,114 7,904 May 29, 2021 May 30, 2020 Accounts receivable from unconsolidated entities 2,404 $ 4,935 Accounts payable to unconsolidated entities 4,161 5,706

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	May 29, 2021
Goodwill and Other Intangible Assets [Abstract]
Summary Of Goodwill And Other Intangible Assets	Other Intangibles Franchise Customer Non-compete Right of Water Total Goodwill rights relationships agreements Use rights Trademark intangibles Balance June 1, 2019 $ 35,525 $ 19,955 $ 2,504 $ 297 $ — $ 720 $ 286 $ 59,287 Additions — — 1,000 1,000 — — — 2,000 Amortization — (1,628) (1,150) (118) — — (50) (2,946) Balance May 30, 2020 35,525 18,327 2,354 1,179 — 720 236 58,341 Additions — — — — 39 — — 39 Amortization — (1,628) (666) (160) (10) — (50) (2,514) Balance May 29, 2021 $ 35,525 $ 16,699 $ 1,688 $ 1,019 $ 29 $ 720 $ 186 $ 55,866
Schedule Of Other Intangibles	May 29, 2021 May 30, 2020 Gross carrying Accumulated Gross carrying Accumulated amount amortization amount amortization Other intangible assets: Franchise rights $ 29,284 $ (12,585) $ 29,284 $ (10,957) Customer relationships 9,644 (7,956) 20,544 (18,190) Non-compete agreements 1,450 (431) 1,450 (271) Right of use intangible 229 (200) 191 (191) Water rights * 720 — 720 — Trademark 400 (214) 400 (164) Total $ 41,727 $ (21,386) $ 52,589 $ (29,773) * Water rights are an indefinite life intangible asset.
Schedule Of Estimated Amortization Of Intangible Assets	For fiscal year Estimated amortization expense 2022 $ 2,220 2023 2,206 2024 2,170 2025 2,040 2026 2,015 Thereafter 8,970 Total $ 19,621

Accrued Dividends Payable And_2

Accrued Dividends Payable And Dividends per Common Share (Tables)	12 Months Ended
	May 29, 2021
Accrued Dividends Payable And Dividends Per Common Share [Abstract]
Schedule of Dividends	13 Weeks Ended 52 Weeks Ended May 29, 2021 May 30, 2020 May 29, 2021 May 30, 2020 Net income (loss) attributable to Cal-Maine Foods, Inc. $ (4,244) $ 60,463 $ 2,060 $ 18,391 Cumulative losses to be recovered prior to payment of divided at beginning of period — (61,833) (1,370) (19,761) Net income attributable to Cal-Maine Foods, Inc. available for dividend $ — $ — $ — $ — 1/3 of net income attributable to Cal-Maine Foods, Inc. available for dividend $ — Common stock outstanding (shares) 44,058 Class A common stock outstanding (shares) 4,800 Total common stock outstanding (shares) 48,858 Dividends per common share* $ — $ — $ 0.034 $ — *Dividends per 1/3 common stock outstanding (shares).

Net Income per Common Share (Ta

Net Income per Common Share (Tables)	12 Months Ended
	May 29, 2021
Net Income per Common Share [Abstract]
Computation of Basic and Diluted Net Income Per Share	May 29, 2021 May 30, 2020 June 1, 2019 Numerator Net income $ 2,060 $ 18,328 $ 55,062 Less: Net income (loss) attributable to noncontrolling interest — (63) 833 Net income attributable to Cal-Maine Foods, Inc. $ 2,060 $ 18,391 $ 54,229 Denominator Weighted-average common shares outstanding, basic 48,522 48,467 48,467 Effect of dilutive securities of restricted shares 134 117 122 Weighted-average common shares outstanding, diluted 48,656 48,584 48,589 Net income per common share attributable to Cal-Maine Foods, Inc. Basic $ 0.04 $ 0.38 $ 1.12 Diluted $ 0.04 $ 0.38 $ 1.12

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	May 29, 2021
Revenue Recognition [Abstract]
Disaggregation of Revenue	13 Weeks Ended 52 Weeks Ended May 29, 2021 May 30, 2020 May 29, 2021 May 30, 2020 Conventional shell egg sales $ 205,987 $ 311,380 $ 766,284 $ 830,278 Specialty shell egg sales 131,243 133,347 539,780 485,465 Egg products 10,997 7,204 36,733 31,414 Other 1,571 1,402 6,190 4,452 $ 349,798 $ 453,333 $ 1,348,987 $ 1,351,609

Leases (Tables)

Leases (Tables)	12 Months Ended
	May 29, 2021
Leases [Abstract]
Schedule of Lease Cost	13 Weeks Ended May 29, 2021 52 Weeks Ended May 30, 2020 Operating Lease cost $ 226 $ 929 Finance Lease cost Amortization of right-of-use asset $ 43 $ 168 Interest on lease obligations $ 7 $ 34 Short term lease cost $ 1,057 $ 3,771
Schedule of Future Minimum Lease Payments	As of May 29, 2021 Operating Leases Finance Leases 2022 $ 802 $ 239 2023 539 239 2024 380 219 2025 130 — 2026 26 — Thereafter 5 — Total 1,882 697 Less imputed interest (157) (44) Total $ 1,725 $ 653
Schedule of Weighted-Average Information	As of May 29, 2021 Operating Leases Finance Leases Weighted-average remaining lease term (years) 2.8 2.5 Weighted-average discount rate 5.9 % 4.9 %

Stock Compensation Plans (Table

Stock Compensation Plans (Tables)	12 Months Ended
	May 29, 2021
Stock Compensation Plans [Abstract]
Summary of Equity Award Activity	Number of Shares Weighted Average Date Fair Value Outstanding, June 1, 2019 248,412 $ 42.20 Granted 104,566 38.25 Vested (77,801) 43.00 Forfeited (2,131) 43.20 Outstanding, May 30, 2020 273,046 $ 41.36 Granted 112,860 37.82 Vested (79,328) 43.96 Forfeited (4,431) 40.12 Outstanding, May 29, 2021 302,147 $ 39.37

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	May 29, 2021
Income Taxes [Abstract]
Tax Expense by Jurisdiction	Fiscal year ended May 29, 2021 May 30, 2020 June 1, 2019 Current: Federal $ (35,090) $ (6,750) $ 8,160 State 730 (1,800) 1,460 (34,360) (8,550) 9,620 Deferred: Federal 21,658 8,872 4,843 State 693 1,409 1,280 22,351 10,281 6,123 $ (12,009) $ 1,731 $ 15,743
Deferred Tax Assets and Liabilities	May 29, 2021 May 30, 2020 Deferred tax liabilities: Property, plant and equipment $ 82,508 $ 60,645 Inventories 31,501 28,075 Investment in affiliates 7,670 8,099 Other comprehensive income — 214 Other 5,648 5,002 Total deferred tax liabilities 127,327 102,035 Deferred tax assets: Accrued expenses 3,728 3,376 State operating loss carryforwards 3,416 792 Other comprehensive income 497 — Other 5,278 5,099 Total deferred tax assets 12,919 9,267 Net deferred tax liabilities $ 114,408 $ 92,768
Reconciliation of Effective Tax Expense	Fiscal year end May 29, 2021 May 30, 2020 June 1, 2019 Statutory federal income tax $ (2,087) $ 4,226 $ 14,694 State income taxes, net 1,124 (309) 2,164 Domestic manufacturers deduction 3,566 684 — Enacted net operating loss carryback provision (16,014) (3,041) — Tax exempt interest income (50) (111) (197) Other, net 1,452 282 (918) $ (12,009) $ 1,731 $ 15,743

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019	Jun. 02, 2018
Significant Accounting Policies [Line Items]
Fiscal period duration	364 days
Checks outstanding in excess of related book cash balances	$ 7,500	$ 11,200
Allowance for doubtful accounts	795	744
Advertising expense	$ 11,700	6,000	$ 7,300
Flock costs, cost accumulation period	154 days
Stockholders equity	$ 1,012,781	1,009,675	989,806	$ 955,682
Restatement Adjustment [Member]
Significant Accounting Policies [Line Items]
Stockholders equity		422
Retained Earnings [Member]
Significant Accounting Policies [Line Items]
Stockholders equity	$ 975,977	975,147	$ 954,527	$ 924,918
Retained Earnings [Member] | Restatement Adjustment [Member]
Significant Accounting Policies [Line Items]
Stockholders equity		$ 422
Customer Concentration Risk [Member] | Accounts Receivable | One Customer [Member]
Significant Accounting Policies [Line Items]
Concentration risk, percentage	23.80%	29.50%
Minimum [Member]
Significant Accounting Policies [Line Items]
Intangible assets estimated useful life	5 years
Flock costs, amortization period	1 year
Maximum [Member]
Significant Accounting Policies [Line Items]
Intangible assets estimated useful life	15 years
Flock costs, amortization period	2 years
Buildings and Improvements [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment useful life	15 years
Buildings and Improvements [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment useful life	25 years
Machinery and Equipment [Member] | Minimum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment useful life	3 years
Machinery and Equipment [Member] | Maximum [Member]
Significant Accounting Policies [Line Items]
Property, plant and equipment useful life	12 years

Acquisitions (Narrative) (Detai

Acquisitions (Narrative) (Details) $ in Thousands, Item in Millions	Mar. 28, 2020USD ($)	Oct. 20, 2019USD ($)Item
Mahard Egg Farm [Member]
Business Acquisition [Line Items]
Business combination, consideration transferred | $		$ 45,500
Number of laying hens acquired | Item		3.9
Number of layers, permitted capacity | Item		8
Mahard Egg Farm [Member] | Texas Egg Products, LLC [Member]
Business Acquisition [Line Items]
Business acquisition, percentage of voting interest acquired		21.10%
Interest held		93.20%
Texas Egg Products, LLC [Member]
Business Acquisition [Line Items]
Business combination, consideration transferred | $	$ 135
Business acquisition, percentage of voting interest acquired	6.80%

Acquisitions (Allocation of Pur

Acquisitions (Allocation of Purchase Price) (Details) - Mahard Egg Farm [Member] $ in Thousands	Oct. 20, 2019USD ($)
Business Acquisition [Line Items]
Inventory	$ 5,276
Property, plant and equipment	38,433
Customer list and non-compete agreement	2,000
Liabilities assumed	(194)
Total purchase price	$ 45,515

Investment Securities (Narrativ

Investment Securities (Narrative) (Details) - USD ($)	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Investments Securities [Abstract]
Proceeds from sale of available-for-sale securities, current	$ 129,100,000	$ 204,300,000	$ 209,700,000
Proceeds from sale of available-for-sale securities, noncurrent	54,000	1,200,000	84,000
Gross realized gains on sales of available-for-sale securities, current	456,000	278,000	9,000
Gross realized gains on sales of available-for-sale securities, noncurrent		611,000	48,000
Gross realized losses on sales of available-for-sale securities, current	19,000	6,000	33,000
Gross realized losses on sales of available-for-sale securities, noncurrent	0	0	$ 0
Allowance for credit losses	$ 0	$ 0

Investment Securities (Schedule

Investment Securities (Schedule of Investment Securities) (Details) - USD ($) $ in Thousands	May 29, 2021	May 30, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	$ 111,505	$ 152,773
Unrealized Gains, Current	664	1,390
Unrealized Losses, Current	11	0
Estimated Fair Value, Current	112,158	154,163
Amortized Cost, Noncurrent	2,306	2,005
Unrealized Gains, Noncurrent	1,810	744
Unrealized Losses, Noncurrent	0	0
Estimated Fair Value, Noncurrent	4,116	2,749
Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	16,424	16,093
Unrealized Gains, Current	56	86
Unrealized Losses, Current	0	0
Estimated Fair Value, Current	16,480	16,179
Commercial Paper [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	1,998	6,965
Unrealized Gains, Current	0	17
Unrealized Losses, Current	0	0
Estimated Fair Value, Current	1,998	6,982
Corporate Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	80,092	125,594
Unrealized Gains, Current	608	1,274
Unrealized Losses, Current	0	0
Estimated Fair Value, Current	80,700	126,868
Certificates of Deposits [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	1,077	1,492
Unrealized Gains, Current	0	0
Unrealized Losses, Current	1	0
Estimated Fair Value, Current	1,076	1,492
Asset Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Current	11,914	2,629
Unrealized Gains, Current	0	13
Unrealized Losses, Current	10	0
Estimated Fair Value, Current	11,904	2,642
Mutual Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Noncurrent	2,306	2,005
Unrealized Gains, Noncurrent	1,810	744
Unrealized Losses, Noncurrent	0	0
Estimated Fair Value, Noncurrent	$ 4,116	$ 2,749

Investment Securities (Schedu_2

Investment Securities (Schedule of Contractual Maturities of Investment Securities) (Details) - USD ($) $ in Thousands	May 29, 2021	May 30, 2020
Investments Securities [Abstract]
Within one year	$ 33,899
1-5 years	78,259
Total	$ 112,158	$ 154,163

Fair Value Measures (Schedule o

Fair Value Measures (Schedule of Assets Measured at Fair Value on A Recurring Basis) (Details) - USD ($) $ in Thousands	May 29, 2021	May 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 116,274	$ 156,912
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	4,116	2,749
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	112,158	154,163
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	16,480	16,179
Municipal Bonds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Municipal Bonds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	16,480	16,179
Municipal Bonds [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	1,998	6,982
Commercial Paper [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Commercial Paper [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	1,998	6,982
Commercial Paper [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	80,700	126,868
Corporate Bonds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Corporate Bonds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	80,700	126,868
Corporate Bonds [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Certificates of Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	1,076	1,492
Certificates of Deposits [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Certificates of Deposits [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	1,076	1,492
Certificates of Deposits [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Asset Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	11,904	2,642
Asset Backed Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Asset Backed Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	11,904	2,642
Asset Backed Securities [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	4,116	2,749
Mutual Funds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	4,116	2,749
Mutual Funds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Mutual Funds [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 0	$ 0

Inventories (Narrative) (Detail

Inventories (Narrative) (Details) pullet_and_breeder in Millions, Layers in Millions	May 29, 2021Layerspullet_and_breeder
Inventories [Abstract]
Pullets and breeders | pullet_and_breeder	10.8
Layers | Layers	37.8

Inventories (Schedule Of Invent

Inventories (Schedule Of Inventories) (Details) - USD ($) $ in Thousands	May 29, 2021	May 30, 2020
Inventories [Abstract]
Flocks, net of amortization	$ 123,860	$ 110,198
Eggs and egg products	21,084	18,487
Feed and supplies	73,431	58,531
Total inventories	$ 218,375	$ 187,216

Inventories (Schedule Of Cost O

Inventories (Schedule Of Cost Of Sales Amortization And Mortality) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Inventories [Abstract]
Amortization	$ 133,448	$ 133,379	$ 119,658
Mortality	6,769	5,823	5,161
Total flock costs charged to cost of sales	$ 140,217	$ 139,202	$ 124,819

Property, Plant and Equipment_2

Property, Plant and Equipment (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 56,500	$ 54,500	$ 51,700
Asset Impairment Charges	$ 196	$ 2,919	$ 0

Property, Plant and Equipment_3

Property, Plant and Equipment (Schedule of Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	May 29, 2021	May 30, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 1,213,163	$ 1,142,666
Less: accumulated depreciation	623,746	585,291
Property, plant and equipment, less accumulated depreciation	589,417	557,375
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	101,174	91,865
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	454,332	393,195
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	584,778	531,545
Construction-in-Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$ 72,879	$ 126,061

Investment in Unconsolidated _3

Investment in Unconsolidated Entities (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Investments in and Advances to Affiliates [Line Items]
Investments in affiliates, recorded using the equity method of accounting	$ 49,900	$ 54,700
Equity in income of unconsolidated entities	622	534	$ 4,776
Carrying value of cost method investment	$ 768	$ 2,000
Red River Valley Egg Farm, LLC [Member]
Investments in and Advances to Affiliates [Line Items]
Ownership percentage	50.00%
Specialty Eggs LLC [Member]
Investments in and Advances to Affiliates [Line Items]
Ownership percentage	50.00%
Southwest Specialty Eggs, LLC [Member]
Investments in and Advances to Affiliates [Line Items]
Ownership percentage	50.00%

Investment in Unconsolidated _4

Investment in Unconsolidated Entities (Schedule Of Transactions With Unconsolidated Affiliates) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019	Jun. 02, 2018
Related Party Transaction [Line Items]
Net income	$ 2,060	$ 18,328	$ 55,062
Total assets	1,229,174	1,206,694
Total liabilities	216,393	197,019
Total equity	1,012,781	1,009,675	989,806	$ 955,682
Corporate Joint Venture [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Related Party Transaction [Line Items]
Net sales	119,853	188,922	112,396
Net income	1,596	1,064	9,490
Total assets	106,592	113,513	128,470
Total liabilities	5,850	4,655	7,600
Total equity	100,742	108,858	120,870
Affiliated Entity [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Related Party Transaction [Line Items]
Sales to unconsolidated entities	56,765	54,559	58,093
Purchases from unconsolidated entities	76,059	71,475	81,685
Dividends from unconsolidated entities	6,663	7,114	$ 7,904
Accounts receivable from unconsolidated entities	2,404	4,935
Accounts payable to unconsolidated entities	$ 4,161	$ 5,706

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Goodwill and Other Intangible Assets [Abstract]
Aggregate amortization expense for intangible assets	$ 2,514	$ 2,946	$ 2,800

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets (Schedule of Goodwill and Other Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Goodwill
Goodwill, Balance	$ 35,525	$ 35,525
Goodwill, Balance	35,525	35,525	$ 35,525
Other intangibles, Finite-Lived
Other intangibles, Amortization	(2,514)	(2,946)	(2,800)
Other Intangibles, Finite-Lived, Balance	19,621
Total intangibles
Total intangibles, Balance	58,341	59,287
Total intangibles, Additions	39	2,000
Total intangibles, Amortization	(2,514)	(2,946)	(2,800)
Total intangibles, Balance	55,866	58,341	59,287
Water Rights [Member]
Other intangibles, Indefinite-Lived
Other Intangibles, Indefinite-Lived, Balance	720	720
Other Intangibles, Indefinite-Lived, Balance	720	720	720
Franchise Rights [Member]
Other intangibles, Finite-Lived
Other Intangibles, Finite-Lived, Balance	18,327	19,955
Other Intangibles, Additions	0	0
Other intangibles, Amortization	(1,628)	(1,628)
Other Intangibles, Finite-Lived, Balance	16,699	18,327	19,955
Total intangibles
Total intangibles, Amortization	(1,628)	(1,628)
Customer Relationships [Member]
Other intangibles, Finite-Lived
Other Intangibles, Finite-Lived, Balance	2,354	2,504
Other Intangibles, Additions	0	1,000
Other intangibles, Amortization	(666)	(1,150)
Other Intangibles, Finite-Lived, Balance	1,688	2,354	2,504
Total intangibles
Total intangibles, Amortization	(666)	(1,150)
Non-Compete Agreements [Member]
Other intangibles, Finite-Lived
Other Intangibles, Finite-Lived, Balance	1,179	297
Other Intangibles, Additions	0	1,000
Other intangibles, Amortization	(160)	(118)
Other Intangibles, Finite-Lived, Balance	1,019	1,179	297
Total intangibles
Total intangibles, Amortization	(160)	(118)
Right of Use [Member]
Other intangibles, Finite-Lived
Other Intangibles, Finite-Lived, Balance	0	0
Other Intangibles, Additions	39	0
Other intangibles, Amortization	(10)	0
Other Intangibles, Finite-Lived, Balance	29	0	0
Total intangibles
Total intangibles, Amortization	(10)	0
Trademark [Member]
Other intangibles, Finite-Lived
Other Intangibles, Finite-Lived, Balance	236	286
Other intangibles, Amortization	(50)	(50)
Other Intangibles, Finite-Lived, Balance	186	236	$ 286
Total intangibles
Total intangibles, Amortization	$ (50)	$ (50)

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets (Schedule of Other Intangibles) (Details) - USD ($) $ in Thousands	May 29, 2021	May 30, 2020	Jun. 01, 2019
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 41,727	$ 52,589
Accumulated amortization	(21,386)	(29,773)
Franchise Rights [Member]
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived	29,284	29,284
Accumulated amortization	(12,585)	(10,957)
Customer Relationships [Member]
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived	9,644	20,544
Accumulated amortization	(7,956)	(18,190)
Non-Compete Agreements [Member]
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived	1,450	1,450
Accumulated amortization	(431)	(271)
Right of Use [Member]
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived	229	191
Accumulated amortization	(200)	(191)
Trademark [Member]
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived	400	400
Accumulated amortization	(214)	(164)
Water Rights [Member]
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, indefinite-lived	$ 720	$ 720	$ 720

Goodwill and Other Intangible_6

Goodwill and Other Intangible Assets (Schedule of Estimated Amortization Of Intangible Assets) (Details) $ in Thousands	May 29, 2021USD ($)
Goodwill and Other Intangible Assets [Abstract]
2022	$ 2,220
2023	2,206
2024	2,170
2025	2,040
2026	2,015
Thereafter	8,970
Total	$ 19,621

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Details) - USD ($)	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Defined Benefit Plan Disclosure [Line Items]
Medical claim, maximum per occurrence	$ 225,000
Medical plan expense	21,700,000	$ 17,800,000	$ 18,100,000
Liability recorded for incurred but not reported claims	2,400,000	1,700,000
Deferred compensation expense	1,600,000	621,000	377,000
Postretirement expense liability	$ 3,400,000	3,400,000
KSOP [Member]
Defined Benefit Plan Disclosure [Line Items]
Company matching contribution percentage	3.00%
Company cash contribution	$ 3,800,000	$ 3,800,000	$ 3,700,000
Compare share contribution	0	0	0
Certain Officers [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation agreement, amount of years required for payment	65 years
Payments made under plan	$ 170,000	$ 150,000	$ 129,000
Liability related to deferred compensation agreements	1,400,000	1,400,000
Officers [Member]
Defined Benefit Plan Disclosure [Line Items]
Payments made under plan	55,000	1,200,000
Liability related to deferred compensation agreements	4,100,000	2,700,000
Awards issued under deferred compensation plan	$ 279,000	$ 266,000	$ 267,000

Credit Facility (Narrative) (De

Credit Facility (Narrative) (Details)	Jul. 10, 2018USD ($)Item	May 29, 2021USD ($)	May 30, 2020USD ($)	Jun. 01, 2019USD ($)
Debt Instrument [Line Items]
Interest costs incurred		$ 213,000	$ 498,000	$ 644,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Amount borrowed		$ 0
Maximum borrowing capacity	$ 100,000,000
Debt instrument, term		5 years
Accordion feature, increase limit	$ 125,000,000
Standby letters of credit		$ 4,100,000
Commitment fee	0.20%
Number of financial covenants | Item	2
Restrictive covenants, minimum working capital ratio	2
Annual limit on capital expenditures	$ 150,000,000
Restrictive covenants, minimum voting ownership percentage	50.00%
Maximum repurchase of capital stock, amount	$ 75,000,000
Minimum capacity available	$ 20,000,000
Revolving Credit Facility [Member] | Federal Funds Effective Swap Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Revolving Credit Facility [Member] | Applicable Margin, Eurodollar Rate Loans [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility [Member] | Applicable Margin, Eurodollar Rate Loans [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility [Member] | Applicable Margin, Eurodollar Rate Loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Revolving Credit Facility [Member] | Applicable Margin, Base Rate Loans [Member] | Minimum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.00%
Revolving Credit Facility [Member] | Applicable Margin, Base Rate Loans [Member] | Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%

Accrued Dividends Payable And_3

Accrued Dividends Payable And Dividends per Common Share (Narrative) (Details) $ in Millions	12 Months Ended
	May 29, 2021USD ($)
Accrued Dividends Payable And Dividends Per Common Share [Abstract]
Number of days after first, second and third quarter dividends paid	60 days
Number of days after fourth quarter dividends paid	65 days
Number of days dividends paid following record date	15 days
Cumulative losses to be recovered prior to paying dividend	$ 4.2
Percentage of net income loss used to compute accrued dividends	33.33%

Accrued Dividends Payable And_4

Accrued Dividends Payable And Dividends per Common Share (Schedule of Dividends) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		12 Months Ended
	May 29, 2021	May 30, 2020	May 29, 2021	May 30, 2020	Jun. 01, 2019
Class of Stock [Line Items]
Net income (loss) attributable to Cal-Maine Foods, Inc.	$ (4,244)	$ 60,463	$ 2,060	$ 18,391	$ 54,229
Cumulative losses to be recovered prior to payment of divided at beginning of period	0	61,833	1,370	19,761
Net income (loss) attributable to Cal-Maine Foods, Inc. available for dividend	0	$ 0	$ 0	$ 0
1/3 of net income attributable to Cal-Maine Foods, Inc. available for dividend	$ 0
Common stock outstanding (shares)	48,858		48,858
Dividends per common share (in dollars per share)	$ 0	$ 0	$ 0.034	$ 0
Percentage of net income loss used to compute accrued dividends			33.33%
Common Stock [Member]
Class of Stock [Line Items]
Common stock outstanding (shares)	44,058		44,058
Class A Common Stock [Member]
Class of Stock [Line Items]
Common stock outstanding (shares)	4,800		4,800

Equity (Narrative) (Details)

Equity (Narrative) (Details)	May 29, 2021ClassVoteshares
Schedule of Stockholders Equity [Line Items]
Number of classes of capital stock | Class	2
Number of shares owned by immediate family members and/or permitted transferee's (in shares) | shares	4,600,000
Common Stock [Member]
Schedule of Stockholders Equity [Line Items]
Number of votes per share of stock	1
Number of votes per share of stock converted from Class A	1
Class A Common Stock [Member]
Schedule of Stockholders Equity [Line Items]
Number of votes per share of stock	10
Number of shares owned by immediate family members and/or permitted transferee's (in shares) | shares	4,300,000

Net Income per Common Share (Co

Net Income per Common Share (Computation of Basic and Diluted Net Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		12 Months Ended
	May 29, 2021	May 30, 2020	May 29, 2021	May 30, 2020	Jun. 01, 2019
Net Income per Common Share [Abstract]
Net income			$ 2,060	$ 18,328	$ 55,062
Less: Net income (loss) attributable to noncontrolling interest			0	(63)	833
Net income attributable to Cal-Maine Foods, Inc.	$ (4,244)	$ 60,463	$ 2,060	$ 18,391	$ 54,229
Denominator
Weighted-average common shares outstanding, basic (in shares)			48,522	48,467	48,467
Effect of dilutive securities of restricted shares (in shares)			134	117	122
Weighted-average common shares outstanding, diluted (in shares)			48,656	48,584	48,589
Net income per common share attributable to Cal-Maine Foods, Inc.
Basic (in dollars per share)			$ 0.04	$ 0.38	$ 1.12
Diluted (in dollars per share)			$ 0.04	$ 0.38	$ 1.12

Revenue Recognition (Narrative)

Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Disaggregation of Revenue [Line Items]
Selling, general and administrative expenses	$ 52.7	$ 52.2	$ 53.6
Two Affiliated Customers [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage	29.80%	32.10%	33.70%
H-E-B, LP [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Concentration Risk, Percentage		10.10%

Revenue Recognition (Disaggrega

Revenue Recognition (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	May 29, 2021	May 30, 2020	May 29, 2021	May 30, 2020	Jun. 01, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 349,798	$ 453,333	$ 1,348,987	$ 1,351,609	$ 1,361,188
Conventional shell egg sales [Member]
Disaggregation of Revenue [Line Items]
Net sales	205,987	311,380	766,284	830,278
Specialty shell egg sales [Member]
Disaggregation of Revenue [Line Items]
Net sales	131,243	133,347	539,780	485,465
Egg products [Member]
Disaggregation of Revenue [Line Items]
Net sales	10,997	7,204	36,733	31,414
Other [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 1,571	$ 1,402	$ 6,190	$ 4,452

Leases (Schedule of Lease Cost)

Leases (Schedule of Lease Cost) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	May 29, 2021	May 30, 2020
Leases [Abstract]
Operating Lease cost	$ 226	$ 929
Finance Lease cost
Amortization of right-of-use asset	43	168
Interest on lease obligations	7	34
Short term lease cost	$ 1,057	$ 3,771

Leases (Schedule of Future Mini

Leases (Schedule of Future Minimum Lease Payments) (Details) $ in Thousands	May 29, 2021USD ($)
Operating Leases
2022	$ 802
2023	539
2024	380
2025	130
2026	26
Thereafter	5
Total	1,882
Less imputed interest	(157)
Total	1,725
Finance Leases
2022	239
2023	239
2024	219
2025	0
2026	0
Thereafter	0
Total	697
Less imputed interest	(44)
Total	$ 653

Leases (Schedule of Future Mi_2

Leases (Schedule of Future Minimum Lease Payments - Additional) (Details) $ in Thousands	May 29, 2021USD ($)
Operating Leases
Total	$ 1,882
Less imputed interest	(157)
Total	1,725
Finance Leases
Total	697
Less imputed interest	(44)
Total	$ 653

Leases (Schedule of Weighted Av

Leases (Schedule of Weighted Average Information) (Details)	May 29, 2021
Operating Leases
Weighted-average remaining lease term (years)	2 years 9 months 18 days
Weighted-average discount rate	5.90%
Finance Leases
Weighted-average remaining lease term (years)	2 years 6 months
Weighted-average discount rate	4.90%

Stock Compensation Plans (Narra

Stock Compensation Plans (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense (benefit)	$ 3.8	$ 3.6	$ 3.6
2012 Omnibus Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incentive plan shares authorized (in shares)	2,000,000
Shares remaining for issuance	1,126,188
Unrecognized compensation expense	$ 6.6	$ 6.3
Weighted average period of unrecognized compensation expense	2 years 1 month 6 days

Stock Compensation Plans (Summa

Stock Compensation Plans (Summary of Equity Award Activity) (Details) - $ / shares	12 Months Ended
	May 29, 2021	May 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number of Shares, Outstanding, Beginning Balance (in shares)	273,046	248,412
Number of Shares, Granted (in shares)	112,860	104,566
Number of Shares, Vested (in shares)	(79,328)	(77,801)
Number of Shares, Forfeited (in shares)	(4,431)	(2,131)
Number of Shares, Outstanding, Ending Balance (in shares)	302,147	273,046
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted Average Grant Date Fair Value, Outstanding, Beginning Balance (in dollars per share)	$ 41.36	$ 42.20
Weighted Average Grant Date Fair Value, Granted (in dollars per share)	37.82	38.25
Weighted Average Grant Date Fair Value, Vested (in dollars per share)	43.96	43
Weighted Average Grant Date Fair Value, Forfeited (in dollars per share)	40.12	43.20
Weighted Average Grant Date Fair Value, Outstanding, Ending Balance (in dollars per share)	$ 39.37	$ 41.36

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Tax Credit Carryforward [Line Items]
Benefit of net operating loss carryback provision	$ 16,014	$ 3,041	$ 0
Income taxes paid	995	32	37,400
Income taxes refunded	2,600	$ 8,400	$ 418
Significant change in unrecognized tax benefits is reasonably possible	1,400
Net Operating Loss Carryback [Member]
Tax Credit Carryforward [Line Items]
Benefit of net operating loss carryback provision	$ 3,600

Income Taxes (Tax Expense by Ju

Income Taxes (Tax Expense by Jurisdiction) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Current:
Current income tax expense (benefit): Federal	$ (35,090)	$ (6,750)	$ 8,160
Current income tax expense (benefit): State	730	(1,800)	1,460
Current income tax expense (benefit): Total	(34,360)	(8,550)	9,620
Deferred:
Deferred income tax expense (benefit): Federal	21,658	8,872	4,843
Deferred income tax expense (benefit): State	693	1,409	1,280
Deferred income tax expense (benefit): Total	22,351	10,281	6,123
Income tax expense (benefit)	$ (12,009)	$ 1,731	$ 15,743

Income Taxes (Deferred Tax Asse

Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	May 29, 2021	May 30, 2020
Deferred tax liabilities:
Property, plant and equipment	$ 82,508	$ 60,645
Inventories	31,501	28,075
Investment in affiliates	7,670	8,099
Other comprehensive income	0	214
Other	5,648	5,002
Total deferred tax liabilities	127,327	102,035
Deferred tax assets:
Accrued expenses	3,728	3,376
State operating loss carryforwards	3,416	792
Other comprehensive income	497	0
Other	5,278	5,099
Total deferred tax assets	12,919	9,267
Net deferred tax liabilities	$ 114,408	$ 92,768

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of Effective Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
Income Taxes [Abstract]
Statutory federal income tax	$ (2,087)	$ 4,226	$ 14,694
State income taxes, net	1,124	(309)	2,164
Domestic manufacturers deduction	3,566	684	0
Enacted net operating loss carryback provision	(16,014)	(3,041)	0
Tax exempt interest income	(50)	(111)	(197)
Other, net	1,452	282	(918)
Income tax expense (benefit)	$ (12,009)	$ 1,731	$ 15,743

Commitments and Contingencies (

Commitments and Contingencies (Narrative) (Details)	12 Months Ended
	May 29, 2021USD ($)$ / Claim
Benton County Foods [Member]
Loss Contingencies [Line Items]
Ownership interest	100.00%
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Outstanding | $	$ 4,100,000
Pending Litigation | State of Texas v. Cal-Maine Foods, Inc. d/b/a Wharton; and Wharton County Foods, LLC [Member]
Loss Contingencies [Line Items]
Damages sought | $	$ 100,000
Pending Litigation | Bell et al. v. Cal-Maine Foods et al. [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Damages sought per claim | $ / Claim	10,000
Pending Litigation | Bell et al. v. Cal-Maine Foods et al. [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Damages sought per claim | $ / Claim	250,000

Related Party Transaction (Narr

Related Party Transaction (Narrative) (Details) - Secondary Public Offering [Member] - Immediate Family Member Of Management Or Principal Owner [Member] $ in Thousands	Aug. 24, 2020USD ($)shares
Related Party Transaction [Line Items]
Shares issued | shares	6,900,000
Fees paid	$ 1,100
Fees reimbursed	$ 551

Subsequent Events (Narrative) (

Subsequent Events (Narrative) (Details) Layers in Millions, $ in Millions	May 30, 2021USD ($)aLayers	May 29, 2021Layers
Subsequent Event [Line Items]
Layers		37.8
Red River Valley Egg Farm, LLC [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Business combination, consideration transferred | $	$ 48.5
Business acquisition, percentage of voting interest acquired	50.00%
Layers	1.7
Area of land | a	400

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Details) - Allowance for Doubtful Accounts [Member] - USD ($) $ in Thousands	12 Months Ended
	May 29, 2021	May 30, 2020	Jun. 01, 2019
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 743	$ 206	$ 268
Charged to Cost and Expense	135	550	42
Write-off of Accounts	83	13	104
Balance at End of Period	$ 795	$ 743	$ 206