XML 37 R22.htm IDEA: XBRL DOCUMENT v2.4.0.6
Summary of Significant Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2012
Summary of Significant Accounting Policies [Abstract]  
Cash flows as previously reported and as changed
                                 
    Three Months Ended
March 31,		     Three Months Ended
March 31,		  
    2012     2011     2012     2011  
    As Reported     As Reported     As Changed     As Changed  

Cash flows provided by operating activities:

                                
         

Restricted cash and cash equivalents

   $ —       $ —       $ 5,661     $ 2,438  
         

Net cash provided by operating activities

   $ 45,179     $ 23,413     $ 50,840     $ 25,851  

Cash flows used in investing activities:

                                
         

Restricted cash and cash equivalents

   $ 5,661     $ 2,753     $ —       $ —    
         

Restricted funds held for derivative collateral and legal matters

   $ —       $ —       $ —       $ 315  
         

Net cash used in investing activities

   $ (11,215 )    $ (11,915 )    $ (16,876 )    $ (14,353 ) 

 

                 
    Six Months Ended
June 30,		  
    2011     2011  
    As Reported     As Changed  

Cash flows provided by operating activities:

                
     

Restricted cash and cash equivalents

   $ —       $ 1,588  
     

Net cash provided by operating activities

   $ 36,026     $ 37,614  

Cash flows used in investing activities:

                
     

Restricted cash and cash equivalents

   $ 6,993     $ —    
     

Restricted funds held for derivative collateral and legal matters

   $ —       $ 5,405  
     

Net cash used in investing activities

   $ (31,283 )    $ (32,871 )