Investment Securities (Schedule Of Unrealized Loss On Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	$ 1,494,703	$ 767,401
Securities Available-for-Sale, Less than 12 months, Unrealized losses	81,107	6,422
Securities Available-for-Sale, 12 months or longer, Fair value	162,521	73,431
Securities Available-for-Sale, 12 months or longer, Unrealized losses	21,386	3,092
Securities Available-for-Sale, Fair value, Total	1,657,224	840,832
Securities Available-for-Sale, Unrealized losses, Total	102,493	9,514
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	275,874	1,834
Securities Available-for-Sale, Less than 12 months, Unrealized losses	19,728	24
Securities Available-for-Sale, Fair value, Total	275,874	1,834
Securities Available-for-Sale, Unrealized losses, Total	19,728	24
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	681,442	333,653
Securities Available-for-Sale, Less than 12 months, Unrealized losses	38,975	4,996
Securities Available-for-Sale, 12 months or longer, Fair value	138,318	73,431
Securities Available-for-Sale, 12 months or longer, Unrealized losses	20,486	3,092
Securities Available-for-Sale, Fair value, Total	819,760	407,084
Securities Available-for-Sale, Unrealized losses, Total	59,461	8,088
Collateralized Loan Obligations
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	489,904	429,671
Securities Available-for-Sale, Less than 12 months, Unrealized losses	20,637	1,395
Securities Available-for-Sale, 12 months or longer, Fair value	24,203
Securities Available-for-Sale, 12 months or longer, Unrealized losses	900
Securities Available-for-Sale, Fair value, Total	514,107	429,671
Securities Available-for-Sale, Unrealized losses, Total	21,537	1,395
US Government Corporations and Agencies Securities
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	37,984
Securities Available-for-Sale, Less than 12 months, Unrealized losses	1,016
Securities Available-for-Sale, Fair value, Total	37,984
Securities Available-for-Sale, Unrealized losses, Total	1,016
Corporate Debt Securities
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	9,499	2,243
Securities Available-for-Sale, Less than 12 months, Unrealized losses	751	7
Securities Available-for-Sale, Fair value, Total	9,499	2,243
Securities Available-for-Sale, Unrealized losses, Total	$ 751	$ 7

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.

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