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Investment In BBEP (Tables)
9 Months Ended
Sep. 30, 2011
Investment In BBEP [Abstract] 
Changes In Balance Of Investment In BBEP
         
(In thousands)        
 
Balance at December 31, 2010
  $ 83,341  
Equity loss in BBEP
    (32,721 )
Distributions from BBEP
    (16,344 )
BBEP Units sold
    (12,551 )
 
   
Ending investment balance
  $ 21,725  
 
   
Operations Statement
Financial Statement
                 
    As of     As of  
    June 30, 2011     December 31, 2010  
    (In thousands)  
Current assets
  $ 120,781     $ 130,017  
Property, plant and equipment
    1,712,096       1,722,295  
Other assets
    46,255       77,855  
Current liabilities
    103,103       101,317  
Long-term debt
    427,364       528,116  
Other non-current liabilities
    116,600       91,477  
Total equity
    1,232,065       1,209,257