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Related Party Transactions (Details) - Directors and executive officers, their affiliates [Member] - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Summary of loan transactions with directors, including their affiliates and executive officers    
Balance, beginning of year $ 15,276 $ 14,825
New loans 5,686 6,843
Less loan payments (6,993) (6,392)
Balance, end of year $ 13,969 $ 15,276