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(5) Other Long-Term Assets and Other Income (Tables)
6 Months Ended
Jun. 30, 2012
Schedule of Long Term Assets
   
June 30,
 2012
   
December 31,
2011
 
Other assets:
           
    Oil and gas properties, net
  $ 334     $ 336  
    Advance coal royalties
    3,129       3,205  
    Deferred financing costs, net
    134       295  
    Marketable equity securities available for sale at fair value (restricted)*
    3,581       2,326  
    Miscellaneous
    1,771       132  
    $ 8,949     $ 6,294  
Schedule of Other Nonoperating Income (Expense) [Table Text Block]
   
Six months ended
June 30,
   
2012
   
2011
 
Other income:
           
   MSHA reimbursements
  $ 4,236     $ 1,900  
   Exploration and dry hole costs
    (53 )     (628 )
   Oil and gas sales, net of expenses
    176       108  
   Other
    135       377  
    $ 4,494     $ 1,757