Document And Entity Information - USD ($)	12 Months Ended
	Aug. 31, 2020	Nov. 24, 2020	Feb. 29, 2020
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Aug. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Registrant Name	EACO CORP
Entity Central Index Key	0000784539
Current Fiscal Year End Date	--08-31
Entity Filer Category	Non-accelerated Filer
Trading Symbol	EACO
Entity Public Float			$ 2,894,000
Entity Common Stock, Shares Outstanding		4,861,590
Entity Voluntary Filers	No
Entity Shell Company	false
Entity Small Business	true
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Well-known Seasoned Issuer	No
Entity Emerging Growth Company	false
Title of 12(g) Security	Common Stock
Entity Address, State or Province	CA