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Derivative Financial Instruments - Summary of Fair Value of Derivative Financial Instruments (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Assets | $ 2,670 | $ 10,472
Liabilities | 15,063 | 6,014
Designated as Hedging Instrument | Cash flow hedges | Interest rate swaps, collars, and floors on loan pools |  |
Derivative [Line Items] |  |
Notional | 1,800,000 | 1,600,000
Assets | 2,670 | 10,472
Liabilities | 15,063 | 6,014
Designated as Hedging Instrument | Cash flow hedges | Interest rate swaps on borrowings |  |
Derivative [Line Items] |  |
Notional | 150,000 | 150,000
Assets | 0 | 0
Liabilities | 0 | 0
Designated as Hedging Instrument | Fair value hedges | Interest rate swaps on borrowings |  |
Derivative [Line Items] |  |
Notional | 900,000 | 900,000
Assets | 0 | 0
Liabilities | 0 | 0
Designated as Hedging Instrument | Fair value hedges | Interest rate swaps on investment securities |  |
Derivative [Line Items] |  |
Notional | 998,107 | 998,107
Assets | 0 | 0
Liabilities | 0 | 0
Not Designated as Hedging Instrument |  |
Derivative [Line Items] |  |
Assets | 164,809 | 155,830
Liabilities | 282,340 | 262,902
Not Designated as Hedging Instrument | Interest rate lock commitments |  |
Derivative [Line Items] |  |
Notional | 67,995 | 25,151
Assets | 317 | 291
Liabilities | 0 | 0
Not Designated as Hedging Instrument | Forward mortgage loan contracts |  |
Derivative [Line Items] |  |
Notional | 77,584 | 39,529
Assets | 144 | 0
Liabilities | 0 | 566
Not Designated as Hedging Instrument | Customer interest rate swaps |  |
Derivative [Line Items] |  |
Notional | 5,886,639 | 5,954,216
Assets | 11,328 | 33,182
Liabilities | 270,910 | 228,750
Not Designated as Hedging Instrument | Counterparty interest rate swaps |  |
Derivative [Line Items] |  |
Notional | 5,886,639 | 5,954,216
Assets | 152,855 | 121,969
Liabilities | 11,380 | 33,346
Not Designated as Hedging Instrument | Customer foreign currency contracts |  |
Derivative [Line Items] |  |
Notional | 10,317 | 12,455
Assets | 57 | 320
Liabilities | 43 | 59
Not Designated as Hedging Instrument | Counterparty foreign currency contracts |  |
Derivative [Line Items] |  |
Notional | 10,484 | 12,308
Assets | 108 | 68
Liabilities | $ 7 | $ 181

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