Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v2.4.0.6
Document and Entity Information
9 Months Ended
Mar. 31, 2013
May 09, 2013
Document And Entity Information [Abstract]    
Document Type 10-Q  
Document Period End Date Mar. 31, 2013  
Amendment Flag false  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2013  
Current Fiscal Year End Date --06-30  
Entity Central Index Key 0000061398  
Entity Current Reporting Status Yes  
Entity Filer Category Smaller Reporting Company  
Entity Registrant Name MAGELLAN PETROLEUM CORP /DE/  
Entity Voluntary Filers No  
Entity Well-known Seasoned Issuer Yes  
Entity Common Stock Shares Outstanding   44,642,983