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Non-marketable Equity Securities (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Non-marketable Equity Securities          
Cost-method investments $ 5,952,123   $ 5,952,123   $ 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 5,273,000   5,273,000    
Investments in Various Trust and Financial Companies
         
Non-marketable Equity Securities          
Cost-method investments $ 679,123   $ 679,123