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Asset Retirement Obligations (Tables)
6 Months Ended
Jun. 30, 2014
Asset Retirement Obligations [Abstract]  
Reconciliation of the total liability for asset retirement obligations
The following is a reconciliation of the total liability for asset retirement obligations:

        
   
(In thousands)
 
   
June 30,
  
December 31,
 
   
2014
  
2013
 
Beginning asset retirement obligation
 $812  $686 
Accretion of discount
  19   38 
Liabilities incurred
  157   131 
Liabilities settled
  (29)  (43)
Ending asset retirement obligation
 $959  $812 
          
Mineral properties
 $181  $175 
Oil and Gas wells
  778   637 
Ending asset retirement obligation
 $959  $812