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8. Loan Servicing (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Transfers and Servicing of Financial Assets [Abstract]      
Balance at beginning of year $ 1,293,079 $ 1,311,965 $ 1,311,965
Mortgage servicing rights capitalized 41,424 55,669 230,818
Mortgage servicing rights amortized (63,035) (69,383) (257,921)
Change in valuation allowance 7,514 8,217 8,217
Balance at end of period $ 1,278,982 $ 1,306,468 $ 1,293,079