Investment Securities (Schedule Of Unrealized Loss On Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	$ 65,239	$ 56,215
Securities Available-for-Sale, Less than 12 months, Unrealized losses	1,594	1,122
Securities Available-for-Sale, 12 months or longer, Fair value	866,385	1,150,640
Securities Available-for-Sale, 12 months or longer, Unrealized losses	87,965	86,033
Securities Available-for-Sale, Fair value, Total	931,624	1,206,855
Securities Available-for-Sale, Unrealized losses, Total	89,559	87,155
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	57,246	46,685
Securities Available-for-Sale, Less than 12 months, Unrealized losses	1,588	420
Securities Available-for-Sale, 12 months or longer, Fair value	136,200	103,993
Securities Available-for-Sale, 12 months or longer, Unrealized losses	15,826	11,100
Securities Available-for-Sale, Fair value, Total	193,446	150,678
Securities Available-for-Sale, Unrealized losses, Total	17,414	11,520
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, 12 months or longer, Fair value	569,653	634,261
Securities Available-for-Sale, 12 months or longer, Unrealized losses	69,975	68,193
Securities Available-for-Sale, Fair value, Total	569,653	634,261
Securities Available-for-Sale, Unrealized losses, Total	69,975	68,193
Collateralized Loan Obligations
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	7,993
Securities Available-for-Sale, Less than 12 months, Unrealized losses	6
Securities Available-for-Sale, 12 months or longer, Fair value	143,950	404,019
Securities Available-for-Sale, 12 months or longer, Unrealized losses	146	4,857
Securities Available-for-Sale, Fair value, Total	151,943	404,019
Securities Available-for-Sale, Unrealized losses, Total	152	4,857
Corporate Debt Securities
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value		9,530
Securities Available-for-Sale, Less than 12 months, Unrealized losses		702
Securities Available-for-Sale, 12 months or longer, Fair value	16,582	8,367
Securities Available-for-Sale, 12 months or longer, Unrealized losses	2,018	1,883
Securities Available-for-Sale, Fair value, Total	16,582	17,897
Securities Available-for-Sale, Unrealized losses, Total	$ 2,018	$ 2,585