v2.4.0.6
Oil and Gas Producing Activities (Tables)
 12 Months Ended
Dec. 31, 2012
Schedule of Information Regarding Costs Incurred for Oil and Gas Property Acquisition, Development and Exploration Activities

Set forth below is certain information regarding the costs incurred for oil and gas property acquisition, development and exploration activities (in thousands):

 

     For the Years Ended December 31,  
     2012      2011      2010  

Property acquisition costs:

         

Unproved properties

    $ 2,335       $ 17,361       $ 8,931   

Proved properties

      5,407         5,063         86   

Working interest acquisitions

      —         70,827         21,179   

Exploration costs

      4,550         9,991         2,874   

Development costs(1)

      285,039         182,522         56,915   
  

 

 

     

 

 

     

 

 

  

Total costs incurred

    $ 297,331       $ 285,764       $ 89,985   
  

 

 

     

 

 

     

 

 

  

 

(1) For the years ended December 31, 2012, 2011 and 2010, development costs include $409,000, $1.2 million and $604,000 in non-cash asset retirement obligations, respectively.
Schedule of Information Regarding Results of Operations for Oil and Gas Producing Activities

Set forth below is certain information regarding the results of operations for oil and gas producing activities (in thousands):

 

     For the Years Ended December 31,  
     2012     2011     2010  

Revenues

    $ 128,892      $ 108,387      $ 57,581   

Production costs

      (28,257 )      (19,134 )      (11,545 ) 

Exploration expense

      (4,550 )      (9,546 )      (2,589 ) 

Impairment

      —        (18,476 )      (2,622 ) 

Depletion

      (60,381 )      (31,858 )      (21,991 ) 

Income tax expense

      (12,139 )      (9,546 )      (6,527 ) 
  

 

 

    

 

 

    

 

 

  

Results of operations

    $ 23,565      $ 19,827      $ 12,307