Quarterly report pursuant to Section 13 or 15(d)

Acquisitions and Divestitures - Purchase Price Allocation for Acquisition (Details)

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Acquisitions and Divestitures - Purchase Price Allocation for Acquisition (Details) - USD ($)
$ in Thousands
Sep. 15, 2014
May. 20, 2014
Fairway    
Non-cash consideration:    
Asset retirement obligations - non-current $ 6,124  
Total consideration 24,817  
Fairway | Evaluated Properties Including Equipment    
Cash consideration:    
Oil and natural gas properties and equipment $ 18,693  
Woodside Properties    
Cash consideration:    
Oil and natural gas properties and equipment   $ 54,989
Non-cash consideration:    
Asset retirement obligations - non-current   10,543
Asset retirement obligations - current   782
Non-cash consideration   11,325
Total consideration   66,314
Woodside Properties | Evaluated Properties Including Equipment    
Cash consideration:    
Oil and natural gas properties and equipment   52,329
Woodside Properties | Unevaluated Properties    
Cash consideration:    
Oil and natural gas properties and equipment   $ 2,660