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Investment Securities - Contractual Maturities of Investment Securities (Details 2) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Available for Sale Amortized Cost      
Due within one year   $ 61,064  
Due over one to five years $ 2,995,525 5,938,706  
Due over five to ten years   2,007,824  
Due over ten years 29,635,572 32,957,092 $ 32,729,025
Mortgage-backed, due in monthly installments 66,659,924 46,859,454 43,540,779
Amortized Cost 99,291,021 87,824,140 76,269,804
Available for Sale Fair Value      
Due within one year   61,780  
Due over one to five years 2,991,485 5,923,560  
Due over five to ten years   2,004,890  
Due over ten years 29,996,099 33,611,161 31,233,063
Mortgage-backed, due in monthly installments 65,802,426 46,391,754 43,080,619
Available-for-sale Securities, Fair Value $ 98,790,010 $ 87,993,145 $ 74,313,682