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Accumulated Other Comprehensive Income (Tables)
6 Months Ended
Jun. 30, 2011
Accumulated Other Comprehensive Income  
Schedule of Accumulated Other Comprehensive Income
   
June 30,
   
December 31,
 
   
2011
   
2010
 
             
Net unrealized gains on investments
  $ 1,375,056     $ 1,749,757  
Net unrealized foreign exchange losses
    (1,752 )     (3,838 )
Net minimum pension liability
    (59,861 )     (60,177 )
Net postretirement benefit
    1,300       1,621  
    $ 1,314,743     $ 1,687,363