Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information (USD $)
12 Months Ended
Dec. 31, 2014
Feb. 28, 2015
Jun. 30, 2014
Document Document And Entity Information [Abstract]      
Entity Registrant Name VAALCO ENERGY INC /DE/    
Entity Central Index Key 0000894627    
Document Type 10-K    
Document Period End Date Dec. 31, 2014    
Amendment Flag false    
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Accelerated Filer    
Entity Public Float     $ 411,807,121dei_EntityPublicFloat
Entity Common Stock, Shares Outstanding   57,880,481dei_EntityCommonStockSharesOutstanding