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Assets Held For Sale And Discontinued Operations (Tables)
12 Months Ended
Dec. 31, 2012
Assets Held For Sale And Discontinued Operations [Abstract]  
Schedule Of The Amounts In Net Loss From Discontinued Operations
  For the Years Ended December 31,
    2012     2011     2010  
Revenues $ 30   $ 23   $ 5  
Production costs and taxes   (315 )   (260 )   (167 )
Depreciation, depletion, and amortization   (223 )   (176 )   (421 )
Impairment   (5,242 )   -     (4,957 )
Deferred income tax benefit   1,419     127     1,884  
Current income tax benefit   20     -     -  
Net loss from discontinued operations, net of income tax $ (4,311 ) $ (286 ) $ (3,656 )