Quarterly report pursuant to Section 13 or 15(d)

Acquisitions (Details)

v3.2.0.727
Acquisitions (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Jun. 29, 2015
USD ($)
a
Jun. 12, 2015
USD ($)
a
well
mi
MMcf
Jun. 09, 2015
USD ($)
a
Mar. 20, 2014
USD ($)
Jun. 29, 2015
USD ($)
a
Apr. 30, 2015
USD ($)
a
Dec. 31, 2014
USD ($)
Jun. 30, 2015
USD ($)
Feb. 28, 2014
a
Rhino Exploration, LLC, Utica Shale Properties [Member]                  
Business Acquisition [Line Items]                  
Purchase price             $ 182,000    
Gas and oil acreage, net | a                 8,000
Cash, net of purchase price adjustments       $ 179,527     $ 179,500    
Fair value of net identifiable assets acquired       179,527          
Rhino Exploration, LLC, Utica Shale Properties [Member] | Proved Properties [Member]                  
Business Acquisition [Line Items]                  
Fair value of net identifiable assets acquired       31,961          
Rhino Exploration, LLC, Utica Shale Properties [Member] | Unproved Properties [Member]                  
Business Acquisition [Line Items]                  
Fair value of net identifiable assets acquired       6,263          
Rhino Exploration, LLC, Utica Shale Properties [Member] | Unevaluated Properties [Member]                  
Business Acquisition [Line Items]                  
Fair value of net identifiable assets acquired       $ 141,303          
Paloma Partners III, LLC [Member]                  
Business Acquisition [Line Items]                  
Purchase price           $ 301,300      
Gas and oil acreage, net | a           24,000      
Amount put in escrow               $ 75,000  
American Energy - Utica, LLC [Member]                  
Business Acquisition [Line Items]                  
Purchase price         $ 405,400        
Cash, net of purchase price adjustments   $ 405,029     $ 405,000        
Fair value of net identifiable assets acquired   405,029              
American Energy - Utica, LLC [Member] | Proved Properties [Member]                  
Business Acquisition [Line Items]                  
Fair value of net identifiable assets acquired   70,804              
American Energy - Utica, LLC [Member] | Unevaluated Properties [Member]                  
Business Acquisition [Line Items]                  
Fair value of net identifiable assets acquired   334,225              
Belmont And Jefferson Counties, Ohio [Member] | American Energy - Utica, LLC [Member]                  
Business Acquisition [Line Items]                  
Purchase price     $ 68,200            
Gross and net acres acquired | a     6,198            
Monroe County, Ohio [Member] | American Energy - Utica, LLC [Member]                  
Business Acquisition [Line Items]                  
Purchase price $ 18,200 $ 319,000              
Gas and oil acreage, gross | a 4,950 38,965     4,950        
Gas and oil acreage, net | a 1,900 27,228     1,900        
Daily production of well acquired | MMcf   14.6              
Gross wells acquired | well   18              
Net wells acquired | well   11.3              
Gas gathering system (in miles) | mi   11              
Number of well pad locations acquired | well   4