| Cover | Apr. 25, 2023 |
| Cover [Abstract] | |
| Entity Registrant Name | The Eastern Company |
| Entity Central Index Key | 0000031107 |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Emerging Growth Company | false |
| Document Period End Date | Apr. 25, 2023 |
| Entity Incorporation State Country Code | CT |
| Entity Tax Identification Number | 06-0330020 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity File Number | 001-35383 |
| Entity Address Address Line 1 | 3 Enterprise Drive |
| Entity Address Address Line 2 | Suite 408 |
| Entity Address City Or Town | Shelton |
| Entity Address State Or Province | CT |
| Entity Address Postal Zip Code | 06484 |
| City Area Code | 203 |
| Local Phone Number | 729-2255 |
| Security 12b Title | Common Stock, No Par Value |
| Trading Symbol | EML |
| Security Exchange Name | NASDAQ |
