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7. Fair Value (Details 1) (Fair Value Level 2, USD $)
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
Fair Value Level 2
     
Assets: (market approach)      
Mortgage servicing rights $ 1,046,252 $ 1,009,623 $ 1,069,417
Impaired loans, net of related allowance 840,524 737,274 3,573,885
OREO $ 879,705 $ 1,074,705 $ 220,493