v3.26.1
Document And Entity Information
Aug. 17, 2026
Document Information [Line Items]  
Entity, Registrant Name Blue Dolphin Energy Company
Document, Type 8-K
Document, Period End Date Aug. 17, 2026
Entity, Incorporation, State or Country Code DE
Entity, File Number 0-15905
Entity, Tax Identification Number 73-1268729
Entity, Address, Address Line One 2301 Commerce St
Entity, Address, Address Line Two Suite 140
Entity, Address, City or Town Houston
Entity, Address, State or Province TX
Entity, Address, Postal Zip Code 77002
City Area Code 713
Local Phone Number 568-4725
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity, Emerging Growth Company false
Amendment Flag false
Entity, Central Index Key 0000793306