| Cover | Mar. 31, 2023 |
| Cover [Abstract] | |
| Entity Registrant Name | ENGlobal Corporation |
| Entity Central Index Key | 0000933738 |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Emerging Growth Company | false |
| Document Period End Date | Mar. 31, 2023 |
| Entity Incorporation State Country Code | NV |
| Entity Tax Identification Number | 88-0322261 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity File Number | 001-14217 |
| Entity Address Address Line 1 | 11740 Katy Fwy – Energy Tower III |
| Entity Address Address Line 2 | 11th floor |
| Entity Address City Or Town | Houston |
| Entity Address State Or Province | TX |
| Entity Address Postal Zip Code | 77079 |
| City Area Code | 281 |
| Local Phone Number | 878-1000 |
| Security 12b Title | Common Stock, $0.001 par value |
| Trading Symbol | ENG |
| Security Exchange Name | NASDAQ |
