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Non-marketable Equity Securities (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Non-marketable Equity Securities          
Cost-method investments $ 5,396,886   $ 5,396,886   $ 6,706,012
Equity Method Investment, Other than Temporary Impairment 0 0 39,185 0  
Equity Method Investments 62,815   62,815    
FHLB Stock
         
Non-marketable Equity Securities          
Cost-method investments 3,473,400   3,473,400    
Investments in Various Trust and Financial Companies
         
Non-marketable Equity Securities          
Cost-method investments $ 1,923,486   $ 1,923,486