Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2020
Mar. 29, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Entity Small Business true    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Period End Date Dec. 31, 2020    
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Registrant Name Gulf Island Fabrication, Inc.    
Entity Central Index Key 0001031623    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Shell Company false    
Entity Current Reporting Status Yes    
Entity Common Stock, Shares Outstanding   15,517,243  
Entity Public Float     $ 40,865,000
Entity Interactive Data Current Yes    
Entity File Number 001-34279    
Entity Tax Identification Number 72-1147390    
Entity Address, Address Line One 16225 Park Ten Place    
Entity Address, Address Line Two Suite 300    
Entity Address, City or Town Houston    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 77084    
City Area Code 713    
Local Phone Number 714-6100    
Document Annual Report true    
Document Transition Report false    
Entity Incorporation, State or Country Code LA    
Trading Symbol Gifi    
Title of 12(b) Security Common Stock    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Documents Incorporated by Reference


Portions of the registrant’s definitive Proxy Statement prepared for use in connection with the registrant’s 2021 Annual Meeting of Shareholders have been incorporated by reference into Part III of this Form 10-K.