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Asset Retirement Obligations (Tables)
 9 Months Ended
Sep. 30, 2012
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,
 
 
2012
 
 
2011
 
Beginning asset retirement obligation
 
$
510
 
 
$
303
 
Accretion of discount
 
 
25
 
 
 
23
 
Liabilities incurred
 
 
133
 
 
 
187
 
Liabilities sold
 
 
--
 
 
 
(3
)
Ending asset retirement obligation
 
$
668
 
 
$
510
 
 
 
 
 
 
 
 
 
Mining properties
 
$
158
 
 
$
149
 
Oil & Gas wells
 
 
510
 
 
 
361
 
Ending asset retirement obligation
 
$
668
 
 
$
510