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Fair Value Measurement (Tables)
6 Months Ended
Jun. 30, 2012
Fair Value Measurement [Abstract]  
Schedule Of Assumptions Used To Determine Fair Value
  2012   2011  
Cumulative probability of earning maximum rate until maturity 0.0-0.2 % 0.0-0.1 %
Cumulative probability of principal returned prior to maturity 95.8-98.6%   95.4-98.7%  
Cumulative probability of default at some future point 1.4-4.2 % 1.3-4.6 %
Liquidity risk premium 4.0-4.5 % 4.5-5.0 %
Schedule Of Fair Value Assets Measured On Recurring Basis
Schedule Of Carrying Value And Fair Value Of Financial Assets Disclosed
Schedule Of Fair Value Assets Measured At Unobservable Inputs Reconciliation
Changes in fair value during the period ended:   2012     2011  
Beginning balance at January 1 $ 4,552,400   $ 5,472,244  
Redemptions and sales   (1,000,000 )   (900,000 )
Realized gain - included in realized gain on investments   40,057     43,199  
Realized loss - included in realized gain on investments   -     (101,861 )
Unrealized gain - included in other comprehensive income   105,643     38,818  
Ending balance, net $ 3,698,100   $ 4,552,400  
Reconciliation Of Liabilities Measured At Fair Value On A Recurring Basis Using Significant Unobservable Inputs (Level 3)
Changes in fair value during the period ended:   2012    2011
Beginning balance at January 1 $ - $ -
Addition of contingent liability   691,250   -
Ending balance, net $ 691,250 $ -
Schedule Of Estimated Fair Value Hierarchy Of Investments And Related Impairments Recognized
December 31, 2011 Valuation
Method
Impaired Level 1 Level 2 Level 3 Total at
Estimated
Fair Value
Impairment
Losses
Cost method investments Fair Value Yes $ - $ - $ 58,281 $ 58,281 $ (28,904 )
Other assets Fair Value Yes   -   -   17,000   17,000   (15,500 )
 
Total cost method                          
investments and other                          
assets     $ - $ - $ 75,281 $ 75,281 $ (44,404 )