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Investment Securities (Interest And Dividends On Securities) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Investments [Abstract]      
Taxable interest and dividends $ 16,510 $ 17,886 $ 17,025
Tax-exempt interest and dividends 5,091 5,869 5,892
Total interest and dividends on securities $ 21,601 $ 23,755 $ 22,917