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	Dec. 31, 2022 USD ($)
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	$ (44,307)
Available-for-sale Securities, Estimated fair value, Less than 12 months	716,230
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(183,022)
Available-for-sale Securities, Estimated fair value, 12 months or more	903,533
Available-for-sale Securities, Gross unrealized losses, Total	(227,329)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	1,619,763
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	0
Available-for-sale Securities, Estimated fair value, Less than 12 months	0
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(203)
Available-for-sale Securities, Estimated fair value, 12 months or more	1,719
Available-for-sale Securities, Gross unrealized losses, Total	(203)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	1,719
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	(12,438)
Available-for-sale Securities, Estimated fair value, Less than 12 months	278,296
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(64,665)
Available-for-sale Securities, Estimated fair value, 12 months or more	285,486
Available-for-sale Securities, Gross unrealized losses, Total	(77,103)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	563,782
Agency 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	(25,920)
Available-for-sale Securities, Estimated fair value, Less than 12 months	299,359
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(104,734)
Available-for-sale Securities, Estimated fair value, 12 months or more	491,663
Available-for-sale Securities, Gross unrealized losses, Total	(130,654)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	791,022
Agency 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	(4,009)
Available-for-sale Securities, Estimated fair value, Less than 12 months	45,532
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(1,340)
Available-for-sale Securities, Estimated fair value, 12 months or more	20,581
Available-for-sale Securities, Gross unrealized losses, Total	(5,349)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	66,113
Agency Mortgage Backed Securities [Member] \| Non-Agency [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Gross unrealized losses, Less than 12 months	(54)
Available-for-sale Securities, Estimated fair value, Less than 12 months	388
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	(54)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	388
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	(1,886)
Available-for-sale Securities, Estimated fair value, Less than 12 months	92,655
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(12,080)
Available-for-sale Securities, Estimated fair value, 12 months or more	104,084
Available-for-sale Securities, Gross unrealized losses, Total	(13,966)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	$ 196,739

Schedule of available for sale and held to maturity securities.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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