Fair Value - Schedule of Fair Value of Assets Measured on Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Financial Assets
Debt securities AFS	$ 5,069,260	$ 5,164,567
MSR	27,374	28,061
Fair Value, Measurements, Recurring
Financial Assets
Derivative financial instruments	26,537	28,620
Loans held for sale	18,188	16,297
Equity securities	13,844	13,923
MSR	27,374	28,061
Financial Liabilities
Derivative financial instruments	21,189	25,483
Fair Value, Measurements, Nonrecurring
Financial Assets
Loans	2,215
OREO	4,250	4,250
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Debt securities AFS	100	200
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring
Financial Assets
Derivative financial instruments	0	0
Loans held for sale	0	0
Equity securities	13,844	13,923
MSR	0	0
Financial Liabilities
Derivative financial instruments	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring
Financial Assets
Loans	0
OREO	0	0
Significant Other Observable Inputs (Level 2)
Financial Assets
Debt securities AFS	5,069,160	5,164,367
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Financial Assets
Derivative financial instruments	26,040	28,125
Loans held for sale	18,188	16,297
Equity securities	0	0
MSR	0	0
Financial Liabilities
Derivative financial instruments	21,147	25,389
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring
Financial Assets
Loans	0
OREO	0	0
Significant Unobservable Inputs (Level 3)
Financial Assets
Debt securities AFS	0	0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring
Financial Assets
Derivative financial instruments	497	495
Loans held for sale	0	0
Equity securities	0	0
MSR	27,374	28,061
Financial Liabilities
Derivative financial instruments	42	94
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring
Financial Assets
Loans	2,215
OREO	$ 4,250	$ 4,250