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Derivative Financial Instruments - Summary of Fair Value of Derivative Financial Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Assets | $ 18,860 | $ 4,155
Liabilities | 1,845 | 11,196
Designated as Hedging Instrument | Cash flow hedges | Interest rate swaps, collars, and floors on loan pools |  |
Derivative [Line Items] |  |
Notional | 2,000,000 | 1,900,000
Assets | 13,448 | 3,490
Liabilities | 1,845 | 11,196
Designated as Hedging Instrument | Cash flow hedges | Interest rate swaps on borrowings |  |
Derivative [Line Items] |  |
Notional | 50,000 | 150,000
Assets | 0 | 0
Liabilities | 0 | 0
Designated as Hedging Instrument | Fair value hedges | Interest rate swaps on borrowings |  |
Derivative [Line Items] |  |
Notional | 1,100,000 | 1,100,000
Assets | 5,412 | 665
Liabilities | 0 | 0
Designated as Hedging Instrument | Fair value hedges | Interest rate swaps on investment securities |  |
Derivative [Line Items] |  |
Notional | 927,407 | 927,407
Assets | 0 | 0
Liabilities | 0 | 0
Not Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Assets | 162,939 | 142,323
Liabilities | 275,654 | 233,117
Not Designated as Hedging Instrument | Interest rate lock commitments |  |
Derivative [Line Items] |  |
Notional | 126,070 | 57,380
Assets | 522 | 0
Liabilities | 0 | 166
Not Designated as Hedging Instrument | Forward mortgage loan contracts |  |
Derivative [Line Items] |  |
Notional | 202,529 | 88,808
Assets | 0 | 807
Liabilities | 82 | 0
Not Designated as Hedging Instrument | Customer interest rate swaps |  |
Derivative [Line Items] |  |
Notional | 9,706,441 | 6,255,123
Assets | 83,696 | 12,827
Liabilities | 191,202 | 219,926
Not Designated as Hedging Instrument | Counterparty interest rate swaps |  |
Derivative [Line Items] |  |
Notional | 9,706,441 | 6,255,123
Assets | 78,452 | 128,469
Liabilities | 84,168 | 12,902
Not Designated as Hedging Instrument | Customer foreign currency contracts |  |
Derivative [Line Items] |  |
Notional | 7,919 | 10,265
Assets | 230 | 28
Liabilities | 33 | 121
Not Designated as Hedging Instrument | Counterparty foreign currency contracts |  |
Derivative [Line Items] |  |
Notional | 7,688 | 10,093
Assets | 39 | 192
Liabilities | $ 169 | $ 2

X
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