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Other Comprehensive Income
12 Months Ended
Dec. 31, 2011
Other Comprehensive Income [Abstract]  
Other Comprehensive Income
(11)      Other Comprehensive Income
 
Accumulated other comprehensive income (loss) included in the balance sheet at December 31 is as follows:
   
2010
   
Change
   
2011
 
Unrealized appreciation on available-
                 
   for-sale securities
  $ 6,168,000     $ (2,256,000 )   $ 3,912,000  
Pension liability adjustment
    (8,529,441 )     (1,366,399 )     (9,895,840 )
Postretirement liability adjustment
    (8,312,977 )     2,099,783       (6,213,194 )
    $ (10,674,418 )   $ (1,522,616 )   $ (12,197,034 )
 

   
2009
   
Change
   
2010
 
Unrealized appreciation on available-
                 
   for-sale securities
  $ 2,646,000     $ 3,522,000     $ 6,168,000  
Pension liability adjustment
    (8,075,676 )     (453,765 )     (8,529,441 )
Postretirement liability adjustment
    (7,404,667 )     (908,310 )     (8,312,977 )
    $ (12,834,343 )   $ 2,159,925     $ (10,674,418 )