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Investment Securities (Scheduled Maturities Of Securities Available For Sale And Securities Held To Maturity) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Investments [Abstract]
Debt securities available for sale, Due in one year or less, Amortized Cost	$ 13,730
Debt securities available for sale, Due from one to five years, Amortized Cost	79,480
Debt securities available for sale, Due after five years through ten years, Amortized Cost	169,611
Debt securities available for sale, Due after ten years, Amortized Cost	127,024
Securities available for sale, Amortized Cost	389,845	$ 455,582
Debt securities available for sale, Due in one year or less, Fair Value	13,702
Debt securities available for sale, Due from one to five years, Fair Value	80,736
Debt securities available for sale, Due after five years through ten years, Fair Value	172,994
Debt securities available for sale, Due after ten years, Fair Value	128,009
Debt securities available for sale, Fair Value	395,441	445,677
Debt securities held to maturity, Due in one year or less, Amortized Cost	52,692
Debt securities held to maturity, Due from one to five years, Amortized Cost	128,065
Debt securities held to maturity, Due after five years through ten years, Amortized Cost	51,848
Debt securities held to maturity, Due after ten years, Amortized Cost	153,700
Securities held to maturity, Amortized Cost	386,305	446,581
Debt securities held to maturity, Due in one year or less, Fair Value	53,043
Debt securities held to maturity, Due from one to five years, Fair Value	130,679
Debt securities held to maturity, Due after five years through ten years, Fair Value	52,333
Debt securities held to maturity, Due after ten years, Fair Value	154,431
Securities held to maturity, Fair Value	$ 390,486	$ 439,581

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