Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

Document And Entity Information - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Mar. 08, 2024
Jun. 30, 2023
Document Information [Line Items]      
Entity, Registrant Name VAALCO Energy, Inc.    
Document, Type 10-K/A    
Document, Annual Report true    
Document, Period End Date Dec. 31, 2023    
Current Fiscal Year End Date --12-31    
Document, Fiscal Period Focus FY    
Document, Fiscal Year Focus 2023    
Document, Transition Report false    
Entity, File Number 1-32167    
Entity, Incorporation, State or Country Code DE    
Entity, Tax Identification Number 76-0274813    
Entity, Address, Address Line One 9800 Richmond Avenue    
Entity, Address, Address Line Two Suite 700    
Entity, Address, City or Town Houston    
Entity, Address, State or Province TX    
Entity, Address, Postal Zip Code 77042    
City Area Code 713    
Local Phone Number 623-0801    
Title of 12(b) Security Common Stock, par value $0.10    
Trading Symbol EGY    
Security Exchange Name NYSE    
Entity, Well-known Seasoned Issuer No    
Entity, Voluntary Filers No    
Entity, Current Reporting Status Yes    
Entity, Interactive Data, Current Yes    
Entity, Filer Category Accelerated Filer    
Entity, Small Business false    
Entity, Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document, Financial Statement Error Correction Flag false    
Entity, Shell Company false    
Entity, Public Float     $ 396.6
Entity, Common Stock Shares, Outstanding   103,274,173  
Amendment Description On March 15, 2024, VAALCO Energy, Inc. (“VAALCO”) filed its Annual Report on Form 10-K for the fiscal year ended December 31, 2023 (the “Original Form 10-K”). The purpose of this Amendment No. 1 to the Original Form 10-K is to amend and restate Part II, Item 9A, which contained an inadvertent typographical error. The attestation report on the Company’s internal control over financial reporting of KPMG LLP has been amended to reference the correct date of the report of the independent registered accounting firm on the consolidated financial statements of VAALCO included in the Original Form 10-K. No other items in the Original Form 10-K are being amended and this Amendment does not reflect any events occurring after the filing of the Original Form 10-K.   In addition, as required by Rule 12b-15 under the Securities Exchange Act of 1934 (the “Exchange Act”), we are filing as exhibits to this Amendment new certifications by our principal executive officer and principal financial officer under Section 302 of the Sarbanes-Oxley Act of 2002, pursuant to Rule 13a-14(a) or 15d-14(a) of the Exchange Act; however, paragraph 3 of the certifications has been omitted because this Amendment does not include financial statements. We are not including certifications under Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) (Section 906 of the Sarbanes-Oxley Act of 2002) because this Amendment does not include financial statements.    
Auditor Name KPMG LLP    
Auditor Firm ID 185    
Auditor Location Houston, Texas    
Amendment Flag true    
Entity, Central Index Key 0000894627