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Investment Securities (Schedule Of Investment Securities Classified As Available-for-sale And Held-to-maturity) (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Available-for-sale [Abstract] |  |
Total | $ 1,526,404 | $ 783,904
Gross unrealized gains | 2,974 | 177
Gross unrealized losses | (26,518) | (26,547)
Allowance for Credit Losses |  | (10,000)
Investment securities, available-for-sale, at fair value | 1,502,860 | 747,534
U.S. Government Agency Securities [Member] |  |
Available-for-sale [Abstract] |  |
Total | 31,233 | 35,346
Gross unrealized gains |  | 6
Gross unrealized losses | (1,271) | (1,466)
Investment securities, available-for-sale, at fair value | 29,962 | 33,886
Asset-backed Securities [Member] |  |
Available-for-sale [Abstract] |  |
Total | 214,346 | 327,159
Gross unrealized gains | 177 | 9
Gross unrealized losses | (24) | (1,815)
Investment securities, available-for-sale, at fair value | 214,499 | 325,353
Federally Insured Student Loan Securities [Member] |  |
Available-for-sale [Abstract] |  |
Total | 2,440 | 6,032
Gross unrealized losses | (2) | (49)
Investment securities, available-for-sale, at fair value | 2,438 | 5,983
Collateralized Loan Obligations Securities [Member] |  |
Available-for-sale [Abstract] |  |
Total | 211,906 | 321,127
Gross unrealized gains | 177 | 9
Gross unrealized losses | (22) | (1,766)
Investment securities, available-for-sale, at fair value | 212,061 | 319,370
Tax-exempt Obligations Of States And Political Subdivisions [Member] |  |
Available-for-sale [Abstract] |  |
Total | 6,860 | 4,860
Gross unrealized gains |  | 39
Gross unrealized losses | (73) | (48)
Investment securities, available-for-sale, at fair value | 6,787 | 4,851
Taxable Obligations Of States And Political Subdivisions [Member] |  |
Available-for-sale [Abstract] |  |
Total | 29,267 | 43,323
Gross unrealized gains | 7 | 15
Gross unrealized losses | (441) | (952)
Investment securities, available-for-sale, at fair value | 28,833 | 42,386
Residential Mortgage-backed Securities [Member] |  |
Available-for-sale [Abstract] |  |
Total | 438,562 | 169,882
Gross unrealized gains | 1,137 | 108
Gross unrealized losses | (6,280) | (9,223)
Investment securities, available-for-sale, at fair value | 433,419 | 160,767
Collateralized Mortgage Obligation Securities [Member] |  |
Available-for-sale [Abstract] |  |
Total | 27,279 | 35,575
Gross unrealized losses | (1,127) | (1,537)
Investment securities, available-for-sale, at fair value | 26,152 | 34,038
Commercial Mortgage-backed Securities [Member] |  |
Available-for-sale [Abstract] |  |
Total | 778,857 | 157,759
Gross unrealized gains | 1,653 |
Gross unrealized losses | (17,302) | (11,506)
Investment securities, available-for-sale, at fair value | $ 763,208 | 146,253
Corporate Debt Securities [Member] |  |
Available-for-sale [Abstract] |  |
Total |  | 10,000
Allowance for Credit Losses |  | $ (10,000)

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