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Property and Equipment (Tables)
 3 Months Ended
Mar. 31, 2014
Property Plant And Equipment [Abstract]  
Components of Property and Equipment

Property and equipment at March 31, 2014 and December 31, 2013 consisted of the following:

 

(Thousands of dollars)    March 31,
2014		     December 31,
2013		  

Proved oil and gas properties, at cost

    $ 371,095      $ 364,123   

Less: Accumulated depletion and depreciation

      (173,637 )      (169,100 ) 
  

 

 

    

 

 

  

Oil and Gas Properties, Net

    $ 197,458      $ 195,023   
  

 

 

    

 

 

  

Field and office equipment

    $ 27,258      $ 26,653   

Less: Accumulated depreciation

      (13,808 )      (13,251 ) 
  

 

 

    

 

 

  

Field and Office Equipment, Net

    $ 13,450      $ 13,402   
  

 

 

    

 

 

  

Total Property and Equipment, Net

    $ 210,908      $ 208,425