Document And Entity Information - USD ($)	12 Months Ended
	Aug. 31, 2021	Jun. 27, 2022	Feb. 28, 2021
Document And Entity Information [Abstract]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Aug. 31, 2021
Entity File Number	000-14311
Entity Registrant Name	EACO CORP
Entity Incorporation, State or Country Code	FL
Entity Tax Identification Number	59-2597349
Entity Address, Address Line One	5065 East Hunter Avenue
Entity Address, City or Town	Anaheim
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92807
City Area Code	714
Local Phone Number	876-2490
Trading Symbol	EACO
Entity Central Index Key	0000784539
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Title of 12(g) Security	Securities registered pursuant to Section 12(g) of the Act: Common Stock, $0.01 Par Value
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--08-31
Amendment Flag	false
Entity Public Float			$ 2,894,000
Entity Common Stock, Shares Outstanding		4,861,590
Auditor Name	HASKELL & WHITE LLP
Auditor Firm ID	200
Auditor Location	Irvine, California