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Loans and Allowance for Loan Losses (Allowance for Loan Losses and Recorded Investment in Loans by Impairment) (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Jun. 30, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Dec. 31, 2017
Allowance for Loan Losses and Recorded Investment in Loans by Impairment            
Allowance for loan losses, Individually evaluated $ 1,514   $ 2,014      
Recorded investment in loans, Individually evaluated 12,819   12,572      
Allowance for loan losses, Collectively evaluated 14,334   13,748      
Recorded investment in loans, Collectively evaluated 1,825,608   1,664,760      
Allowance for loan losses, Total 15,848 $ 16,144 15,762 $ 16,140 $ 16,100 $ 15,523
Recorded investment in loans, Total 1,838,427   1,677,332      
Commercial Loan [Member]            
Allowance for Loan Losses and Recorded Investment in Loans by Impairment            
Allowance for loan losses, Individually evaluated 961   1,528      
Recorded investment in loans, Individually evaluated 8,481   8,089      
Allowance for loan losses, Collectively evaluated 9,816   9,240      
Recorded investment in loans, Collectively evaluated 1,232,144   1,120,616      
Allowance for loan losses, Total 10,777   10,768      
Recorded investment in loans, Total 1,240,625   1,128,705      
Consumer Loan [Member]            
Allowance for Loan Losses and Recorded Investment in Loans by Impairment            
Allowance for loan losses, Individually evaluated 553   486      
Recorded investment in loans, Individually evaluated 4,338   4,483      
Allowance for loan losses, Collectively evaluated 4,518   4,508      
Recorded investment in loans, Collectively evaluated 593,464   544,144      
Allowance for loan losses, Total 5,071   4,994      
Recorded investment in loans, Total $ 597,802   $ 548,627