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Securities (Narrative) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
security
Dec. 31, 2018
USD ($)
security
Dec. 31, 2017
USD ($)
Debt Securities, Available-for-sale [Abstract]      
Sales of securities available for sale $ 12,350 $ 5,374 $ 20,283
Available-for-sale Securities, Gross Realized Gain (Loss) 37 62 94
Available-for-sale Securities, Gross Realized Losses $ 44 $ 45 $ 104
Debt securities included in gross unrealized losses on available for sale securities | security 28 95  
Carrying value of securities pledged as collateral $ 2,900