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, 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	$ (152,773)
Available-for-sale Securities, Estimated fair value, Less than 12 months	1,591,114
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(23,824)
Available-for-sale Securities, Estimated fair value, 12 months or more	169,454
Available-for-sale Securities, Gross unrealized losses, Total	(176,597)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	1,760,568
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	(142)
Available-for-sale Securities, Estimated fair value, Less than 12 months	2,172
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	(142)
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	(5)
Available-for-sale Securities, Estimated fair value, Less than 12 months	2,355
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	(5)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	2,355
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	(64,916)
Available-for-sale Securities, Estimated fair value, Less than 12 months	657,937
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	(64,916)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	657,937
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	(76,068)
Available-for-sale Securities, Estimated fair value, Less than 12 months	738,533
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(22,792)
Available-for-sale Securities, Estimated fair value, 12 months or more	137,188
Available-for-sale Securities, Gross unrealized losses, Total	(98,860)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	875,721
Agency Mortgage Backed Securities [Member] \| U.S. Government Agency Securities [Member]
Schedule Of Available For Sale And Held To Maturity Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	2,172
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	(3,544)
Available-for-sale Securities, Estimated fair value, Less than 12 months	68,512
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	(3,544)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	68,512
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	(8,098)
Available-for-sale Securities, Estimated fair value, Less than 12 months	121,605
Available-for-sale Securities, Gross unrealized losses, 12 months or more	(1,032)
Available-for-sale Securities, Estimated fair value, 12 months or more	32,266
Available-for-sale Securities, Gross unrealized losses, Total	(9,130)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	$ 153,871

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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