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Borrowings (Detail Textuals) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Short-term Debt [Line Items]    
Long-term Federal Home Loan Bank Advances $ 93,392 $ 50,000
Bank    
Short-term Debt [Line Items]    
Long-term Federal Home Loan Bank Advances 92,900  
Amount of FHLB advances which may be called early 10,000  
Maximum additional borrowing amount under agreement with FHLB 221,700  
Federal funds purchased    
Short-term Debt [Line Items]    
Maximum borrowing capacity of federal funds on unsecured basis 39,000  
Maximum borrowing capacity of federal funds on secured basis $ 18,000