Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation - Description of Operations (Details)

v2.4.0.6
Basis of Presentation - Description of Operations (Details)
3 Months Ended
Sep. 30, 2012
segment
Presentation and Significant Accounting Policies Information [Line Items]  
Number of Reportable Segments 2
Nautilus Poplar, LLC (NP)
 
Presentation and Significant Accounting Policies Information [Line Items]  
Subsidiary, Ownership Percentage 100.00%
Magellan Petroleum Australia Limited (MPAL)
 
Presentation and Significant Accounting Policies Information [Line Items]  
Subsidiary, Ownership Percentage 100.00%