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Property and Equipment (Tables)
 12 Months Ended
Dec. 31, 2013
Property and Equipment [Abstract]  
Property and Equipment

 

 

 

 

 

 

 

 

 

December 31,

 

 

 

2013

 

 

2012

 

 

(In thousands)

Proved oil and natural gas properties

 

$
2,307,891 

 

$
1,982,657 

Unproved oil and natural gas properties

 

 
39,191 

 

 
36,992 

Other

 

 
8,137 

 

 
5,998 

Total property and equipment

 

$
2,355,219 

 

$
2,025,647