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Fair Value - Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Equity securities | $ 85,521 | $ 80,372
Derivative assets | 168,604 | 166,302
Derivative liabilities | 294,846 | 268,916
Carrying Value | Fair Value on Recurring Basis |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Equity securities | 85,521 | 80,372
Loans held-for-sale | 66,126 | 32,006
Derivative assets | 168,604 | 166,302
Derivative liabilities | 294,846 | 268,916
Carrying Value | Fair Value on Recurring Basis | U.S. Treasury |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 205,308 | 396,733
Carrying Value | Fair Value on Recurring Basis | U.S. government-sponsored entities and agencies |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 1,172,294 | 1,231,264
Carrying Value | Fair Value on Recurring Basis | Mortgage-backed securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 4,888,456 | 4,216,560
Carrying Value | Fair Value on Recurring Basis | States and political subdivisions |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 523,315 | 535,260
Carrying Value | Fair Value on Recurring Basis | Pooled trust preferred securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 11,298 | 11,337
Carrying Value | Fair Value on Recurring Basis | Other securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 304,807 | 321,901
Carrying Value | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Equity securities |  | 0
Loans held-for-sale |  | 32,006
Derivative assets |  | 166,302
Derivative liabilities |  | 268,916
Carrying Value | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | U.S. Treasury |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: |  | 0
Carrying Value | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | U.S. government-sponsored entities and agencies |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: |  | 1,231,264
Carrying Value | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: |  | 4,216,560
Carrying Value | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | States and political subdivisions |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: |  | 535,260
Carrying Value | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | Pooled trust preferred securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: |  | 11,337
Carrying Value | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | Other securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: |  | 321,901
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Equity securities | 85,521 | 80,372
Loans held-for-sale | 0 | 0
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 205,308 | 396,733
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government-sponsored entities and agencies |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | States and political subdivisions |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pooled trust preferred securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Equity securities | 0 |
Loans held-for-sale | 66,126 |
Derivative assets | 168,604 |
Derivative liabilities | 294,846 |
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | U.S. Treasury |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 0 |
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | U.S. government-sponsored entities and agencies |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 1,172,294 |
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 4,888,456 |
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | States and political subdivisions |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 523,315 |
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | Pooled trust preferred securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 11,298 |
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Other Observable Inputs (Level 2) | Other securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 304,807 |
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Equity securities | 0 | 0
Loans held-for-sale | 0 | 0
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | U.S. Treasury |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | U.S. government-sponsored entities and agencies |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | States and political subdivisions |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | Pooled trust preferred securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | 0 | 0
Estimate of Fair Value Measurement | Fair Value on Recurring Basis | Significant Unobservable Inputs (Level 3) | Other securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Investment securities available-for-sale: | $ 0 | $ 0

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