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Asset Retirement Obligations (Tables)
 9 Months Ended
Sep. 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)
 
  
September 30,
  
December 31,
 
  
2014
  
2013
 
Beginning asset retirement obligation
 
$
812
  
$
686
 
Accretion of discount
  
29
   
38
 
Liabilities incurred
  
272
   
131
 
Liabilities settled
  
(29
)
  
(43
)
Ending asset retirement obligation
 
$
1,084
  
$
812
 
         
Mineral properties
 
$
184
  
$
175
 
Oil and Gas wells
  
900
   
637
 
Ending asset retirement obligation
 
$
1,084
  
$
812