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Derivative Financial Instruments Notional Amounts and Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Derivative [Line Items] |  |
Derivative asset, fair value | $ 129,017 | $ 159,250
Derivative liability, gross liability | (177,145) | (254,332)
Interest Rate Lock Commitments [Member] |  |
Derivative [Line Items] |  |
Derivative asset, notional amount | 188,054 | 171,933
Derivative liability, notional amount | 1,803 | 3,888
Derivative asset, fair value | 753 | 389
Derivative liability, gross liability | (3) | (58)
Forward Commitments [Member] |  |
Derivative [Line Items] |  |
Derivative asset, notional amount | 0 | 51,250
Derivative liability, notional amount | 63,750 | 0
Derivative asset, fair value | 0 | 363
Derivative liability, gross liability | (490) | 0
Interest Rate Swap with Customer [Member] |  |
Derivative [Line Items] |  |
Derivative asset, notional amount | 1,918,631 | 767,905
Derivative liability, notional amount | 2,921,400 | 3,976,294
Derivative asset, fair value | 42,131 | 8,480
Derivative liability, gross liability | (134,590) | (239,058)
Interest Rate Swap With Counterparty [Member] |  |
Derivative [Line Items] |  |
Derivative asset, notional amount | 2,921,400 | 3,976,294
Derivative liability, notional amount | 1,918,631 | 767,905
Derivative asset, fair value | 78,589 | 150,480
Derivative liability, gross liability | (42,501) | (10,734)
Balance Sheet Hedging Instruments |  |
Derivative [Line Items] |  |
Derivative asset, notional amount | 2,450,000 | 2,500,000
Derivative liability, notional amount | 350,000 | 1,400,000
Derivative asset, fair value | 7,147 | 227
Derivative liability, gross liability | (49) | (2,971)
Foreign Exchange Contracts With Customer [Member] |  |
Derivative [Line Items] |  |
Derivative asset, notional amount | 2,955 | 28,327
Derivative liability, notional amount | 16,700 | 693
Derivative asset, fair value | 29 | 1,619
Derivative liability, gross liability | (965) | (27)
Foreign Exchange Contracts With Correspondent Banks [Member] |  |
Derivative [Line Items] |  |
Derivative asset, notional amount | 18,930 | 4,059
Derivative liability, notional amount | 1,154 | 32,406
Derivative asset, fair value | 1,150 | 63
Derivative liability, gross liability | $ (5) | $ (1,569)

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