Cover - shares	6 Months Ended
	Jun. 26, 2021	Aug. 05, 2021
Cover [Abstract]
Entity Registrant Name	ENGlobal Corporation
Entity Central Index Key	0000933738
Document Type	10-Q
Amendment Flag	false
Current Fiscal Year End Date	--12-26
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Document Period End Date	Jun. 26, 2021
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2021
Entity Common Stock Shares Outstanding		35,134,564
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-14217
Entity Incorporation State Country Code	NV
Entity Tax Identification Number	88-0322261
Entity Address Address Line 1	654 N. Sam Houston Parkway E
Entity Address Address Line 2	Suite 400
Entity Address City Or Town	Houston
Entity Address State Or Province	TX
Entity Address Postal Zip Code	77060-5914
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
Entity Interactive Data Current	Yes