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Note 14. Other Comprehensive Income (Loss) (Tables)
12 Months Ended
Dec. 31, 2011
Schedule of Comprehensive Income (Loss) [Table Text Block]
   
Unrealized
Gains
(Losses)
On Securities
   
Adjustments
For Pension Plans
   
Change in
Derivative
Contracts
   
Total
Accumulated
Other
Comprehensive
Loss, Net
 
Balance January 1, 2009
  $ (2,122 )   $ (20,933 )   $ (1,967 )   $ (25,022 )
2009 change
    2,866       6,006       1,967       10,839  
Balance December 31, 2009
    744       (14,927 )           (14,183 )
2010 change
    718       (1,652 )           (934 )
Balance December 31, 2010
    1,462       (16,579 )           (15,117 )
2011 change
    (627 )     (7,754 )           (8,381 )
Balance December 31, 2011
  $ 835     $ (24,333 )   $     $ (23,498 )