Investment Securities (Schedule Of Investment Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 1,192,562	$ 1,418,770
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	996	1,227
Securities Available-for-Sale, Gross Unrealized Holding Losses	63,683	87,155
Debt Securities, Available-for-sale	1,129,875	1,332,842
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	219,248	251,531
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	484	1,173
Securities Available-for-Sale, Gross Unrealized Holding Losses	13,362	11,520
Debt Securities, Available-for-sale	206,370	241,184
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	608,962	703,645
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	74	23
Securities Available-for-Sale, Gross Unrealized Holding Losses	48,187	68,193
Debt Securities, Available-for-sale	560,849	635,475
Collateralized Loan Obligations
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	343,370	443,112
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	434	31
Securities Available-for-Sale, Gross Unrealized Holding Losses	75	4,857
Debt Securities, Available-for-sale	343,729	438,286
Corporate Debt Securities
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	20,732	20,482
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	4
Securities Available-for-Sale, Gross Unrealized Holding Losses	2,057	2,585
Debt Securities, Available-for-sale	18,679	$ 17,897
US Government Corporations and Agencies Securities
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	250
Securities Available-for-Sale, Gross Unrealized Holding Losses	2
Debt Securities, Available-for-sale	$ 248