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Asset Retirement Obligations (Tables)
6 Months Ended
Jun. 30, 2015
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,
 
  
2015
  
2014
 
Beginning asset retirement obligation
 
$
1,133
  
$
812
 
Accretion of discount
  
24
   
40
 
Liabilities incurred
  
61
   
310
 
Liabilities settled
  
--
   
(29
)
Ending asset retirement obligation
 
$
1,218
  
$
1,133
 
         
Mineral properties
 
$
196
  
$
187
 
Oil and Gas wells
  
1,022
   
946
 
Ending asset retirement obligation
 
$
1,218
  
$
1,133