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3. Investments (Details) - USD ($)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Held-to-maturity Securities, Gross Gains (Losses), Derivatives   $ 0
Proceeds from sale of available-for sale investment securities $ 915,918 7,731,846
Available for Sale Securities, Gain (Loss) Recognized 6,000 378,000
Held-to-maturity Securities Pledged as Collateral 6,898,559 7,210,399
US Government Agencies Debt Securities    
Held-to-maturity Securities $ 0 $ 1,250,000