Investment Securities (Scheduled Maturities Of Securities Available For Sale And Securities Held To Maturity) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Investment Securities [Abstract]
Debt securities available for sale, Due in one year or less, Amortized Cost	$ 25,182
Debt securities available for sale, Due from one to five years, Amortized Cost	174,053
Debt securities available for sale, Due after five years through ten years, Amortized Cost	275,972
Debt securities available for sale, Due after ten years, Amortized Cost	68,414
Debt securities available for sale, Amortized Cost	543,621
Debt securities available for sale, Due in one year or less, Fair Value	25,241
Debt securities available for sale, Due from one to five years, Fair Value	173,336
Debt securities available for sale, Due after five years through ten years, Fair Value	276,660
Debt securities available for sale, Due after ten years, Fair Value	69,158
Debt securities available for sale, Fair Value	544,395
Debt securities held to maturity, Due in one year or less, Amortized Cost	22,188
Debt securities held to maturity, Due from one to five years, Amortized Cost	172,094
Debt securities held to maturity, Due after five years through ten years, Amortized Cost	116,362
Debt securities held to maturity, Due after ten years, Amortized Cost	175,073
Securities held to maturity, Amortized Cost	485,717	$ 294,438
Debt securities held to maturity, Due in one year or less, Fair Value	22,261
Debt securities held to maturity, Due from one to five years, Fair Value	175,650
Debt securities held to maturity, Due after five years through ten years, Fair Value	119,183
Debt securities held to maturity, Due after ten years, Fair Value	172,970
Securities held to maturity, Fair Value	$ 490,064	$ 298,695