XML 35 R24.htm IDEA: XBRL DOCUMENT v3.7.0.1
Property and Equipment (Tables)
6 Months Ended
Jun. 30, 2017
Property, Plant and Equipment [Abstract]  
Property and equipment

Property and equipment at June 30, 2017 and December 31, 2016 consisted of the following:

 

(Thousands of dollars)    June 30,
2017
     December 31,
2016
 

Proved oil and gas properties, at cost

   $ 443,244      $ 417,821  

Less: Accumulated depletion and depreciation

     (244,870      (230,331
  

 

 

    

 

 

 

Oil and Gas Properties, Net

   $ 198,374      $ 187,490  
  

 

 

    

 

 

 

Field and office equipment

   $ 26,565      $ 26,902  

Less: Accumulated depreciation

     (18,748      (18,024
  

 

 

    

 

 

 

Field and Office Equipment, Net

   $ 7,817      $ 8,878  
  

 

 

    

 

 

 

Total Property and Equipment, Net

   $ 206,191      $ 196,368