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Securities (Summary Of Proceeds From Sales, Calls And Maturities, Principal Payments, Gains And Losses Of Securities) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Available-for-sale Securities [Abstract]    
Securities available for sale, Proceeds from Sales $ 39,267 $ 3,154
Securities available for sale, Proceeds from Calls and Maturities 55 600
Securities available for sale, Proceeds from Principal Payments 6,690 7,686
Securities available for sale, Gross realized Gains 1,474 61
Securities available for sale, Gross realized Losses $ 742 $ 119