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Asset Retirement And Environmental Obligations
12 Months Ended
Dec. 31, 2011
Asset Retirement And Environmental Obligations [Abstract]  
Asset Retirement And Environmental Obligations

7. Asset Retirement and Environmental Obligations

     The following table presents the reconciliation of the beginning and ending aggregate carrying amounts of short-term and long-term legal obligations associated with the retirement of property, plant and equipment for the years ended December 31, 2011 and 2010 (in thousands):

    2011   2010
Carrying amount at beginning of period $ 491 $ 339
Liabilities incurred   174   105
Liabilities settled   -   -
Accretion expense   74   47
Revisions   -   -
Foreign currency translations   -   -
Carrying amount at end of period $ 739 $ 491
 
Current portion $ - $ -
Noncurrent portion $ 739 $ 491