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Document and Entity Information (USD $)
 12 Months Ended
Jun. 30, 2013
Sep. 11, 2013
Document and Entity Information    
Entity Registrant Name EVOLUTION PETROLEUM CORP  
Entity Central Index Key 0001006655  
Document Type 10-K  
Document Period End Date Jun. 30, 2013  
Amendment Flag false  
Current Fiscal Year End Date --06-30  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Public Float $ 0  
Entity Common Stock, Shares Outstanding   28,609,891
Document Fiscal Year Focus 2013  
Document Fiscal Period Focus FY