XML 12 R1.htm IDEA: XBRL DOCUMENT v3.8.0.1
Document and Entity Information - shares
 3 Months Ended
Sep. 30, 2017
Nov. 05, 2017
Document and Entity Information    
Entity Registrant Name EVOLUTION PETROLEUM CORP  
Entity Central Index Key 0001006655  
Current Fiscal Year End Date --06-30  
Entity Filer Category Accelerated Filer  
Document Type 10-Q  
Document Period End Date Sep. 30, 2017  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   33,064,246