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Loans (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income $ 874,873 $ 889,633
Commercial [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 158,776 159,192
Commercial loans secured by real estate [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 451,787 463,780
Real estate-mortgage [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income 244,322 247,278
Consumer [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Loans, net of unearned income $ 19,988 $ 19,383