| Cover | Mar. 31, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Mar. 31, 2023 |
| Entity File Number | 000-14311 |
| Entity Registrant Name | EACO CORPORATION |
| Entity Central Index Key | 0000784539 |
| Entity Tax Identification Number | 59-2597349 |
| Entity Incorporation, State or Country Code | FL |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
