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Fair Value - Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities	$ 84,954	$ 80,372
Derivative assets	167,479	166,302
Derivative liabilities	297,403	268,916
Carrying Value | Fair Value on Recurring Basis
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Equity securities	84,954	80,372
Loans held-for-sale	19,418	32,006
Derivative assets	167,479	166,302
Derivative liabilities	297,403	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:	233,051	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:	1,183,019	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:	4,550,023	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:	515,104	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:	11,274	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:	299,181	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	84,954	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:	233,051	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	19,418
Derivative assets	167,479
Derivative liabilities	297,403
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:	1,183,019
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:	4,550,023
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:	515,104
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:	11,274
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:	299,181
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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