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Derivative Instruments (Schedule Of Notional Amounts Of Derivative Instruments) (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
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Derivative [Line Items] |  |
Derivative, Notional Amount | $ 4,611,075 | $ 4,631,381
Interest rate swaps |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 1,953,737 | 2,065,400
Interest Rate Floor |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 2,000,000 | 2,000,000
Interest rate caps |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 76,785 | 37,488
Credit risk participation agreements |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 540,569 | 503,196
Foreign exchange contracts |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 18,913 | 16,978
Mortgage loan commitments |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 10,346 | 3,060
Mortgage loan forward sale contracts |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 225 | 1,759
Forward TBA contracts |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 10,500 | $ 3,500

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