| Document and Entity Information | Nov. 05, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 05, 2024 |
| Entity Registrant Name | Gulf Island Fabrication, Inc. |
| Entity Central Index Key | 0001031623 |
| Entity Emerging Growth Company | false |
| Entity File Number | 001-34279 |
| Entity Incorporation, State or Country Code | LA |
| Entity Tax Identification Number | 72-1147390 |
| Entity Address, Address Line One | 2170 Buckthorne Place |
| Entity Address, Address Line Two | Suite 420 |
| Entity Address, City or Town | The Woodlands |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77380 |
| City Area Code | 713 |
| Local Phone Number | 714-6100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, no par value per share |
| Trading Symbol | GIFI |
| Security Exchange Name | NASDAQ |
