Document And Entity Information - USD ($)	12 Months Ended
	Aug. 31, 2018	Nov. 21, 2018	May 31, 2018
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Aug. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Entity Registrant Name	EACO CORP
Entity Central Index Key	0000784539
Current Fiscal Year End Date	--08-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Public Float			$ 1,732,000
Trading Symbol	EACO
Entity Common Stock, Shares Outstanding		4,861,590
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	true