Available-For-Sale And Held-To-Maturity Securities (Schedule Of Gross Unrealized Losses And The Estimated Fair Value By Length Of Time In A Loss Position) (Details) $ in Thousands	Jun. 30, 2024 USD ($)
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	$ (685)
Available-for-sale Securities, Estimated fair value, Less than 12 months	138,623
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(186,694)
Available-for-sale Securities, Estimated fair value, 12 months or more	1,367,197
Available-for-sale Securities, Gross unrealized losses, Total	(187,379)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	1,505,820
U.S. Government Agency Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(3)
Available-for-sale Securities, Estimated fair value, Less than 12 months	443
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(174)
Available-for-sale Securities, Estimated fair value, 12 months or more	1,772
Available-for-sale Securities, Gross unrealized losses, Total	(177)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	2,215
State and Municipal Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(13)
Available-for-sale Securities, Estimated fair value, Less than 12 months	2,337
Available-for-sale Securities, Gross unrealized losses, 12 months or more	0
Available-for-sale Securities, Estimated fair value, 12 months or more	0
Available-for-sale Securities, Gross unrealized losses, Total	(13)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	2,337
Corporate Fixed Income Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(66)
Available-for-sale Securities, Estimated fair value, Less than 12 months	6,547
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(55,817)
Available-for-sale Securities, Estimated fair value, 12 months or more	500,836
Available-for-sale Securities, Gross unrealized losses, Total	(55,883)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	507,383
Mortgage-Backed Securities [Member] \| Agency Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(217)
Available-for-sale Securities, Estimated fair value, Less than 12 months	96,388
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(126,103)
Available-for-sale Securities, Estimated fair value, 12 months or more	684,458
Available-for-sale Securities, Gross unrealized losses, Total	(126,320)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	780,846
Mortgage-Backed Securities [Member] \| Commercial [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	0
Available-for-sale Securities, Estimated fair value, Less than 12 months	0
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(3,055)
Available-for-sale Securities, Estimated fair value, 12 months or more	66,830
Available-for-sale Securities, Gross unrealized losses, Total	(3,055)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	66,830
Mortgage-Backed Securities [Member] \| Non Agency Mortgage Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	0
Available-for-sale Securities, Estimated fair value, Less than 12 months	0
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(11)
Available-for-sale Securities, Estimated fair value, 12 months or more	222
Available-for-sale Securities, Gross unrealized losses, Total	(11)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	222
Asset-Backed Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(386)
Available-for-sale Securities, Estimated fair value, Less than 12 months	32,908
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(1,534)
Available-for-sale Securities, Estimated fair value, 12 months or more	113,079
Available-for-sale Securities, Gross unrealized losses, Total	(1,920)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	$ 145,987

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