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Commitments and Credit Risk (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]      
Loan commitments $ 131,914 $ 110,393  
Operating lease expense $ 478 $ 495 $ 468