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3. Investments (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Held-to-maturity Securities, Gross Gains (Losses), Derivatives $ 0  
Proceeds from sale of available-for sale investment securities 0 $ 915,918
Available for Sale Securities, Gain (Loss) Recognized   6,000
Held-to-maturity Securities Pledged as Collateral 7,075,883 6,898,559
Thousand    
Proceeds from sale of available-for sale investment securities   910,000
US Government Agencies Debt Securities    
Held-to-maturity Securities $ 1,600,000 $ 0