Fair Value - Fair Value of Assets Measured on Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financial Assets
Debt securities AFS	$ 3,212,080	$ 2,226,543
OREO	5,085	6,421
Fair Value, Measurements, Recurring
Financial Assets
Debt securities AFS	3,212,080	2,226,543
Derivative financial instruments	26,612	28,741
Loans held for sale	10,841	17,277
Equity securities	13,874	13,521
Financial Liabilities
Derivative financial instruments	26,701	28,305
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Debt securities AFS	199	196
Derivative financial instruments	0	0
Loans held for sale	0	0
Equity securities	13,874	13,521
Financial Liabilities
Derivative financial instruments	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Debt securities AFS	3,211,881	2,226,347
Derivative financial instruments	26,612	28,741
Loans held for sale	10,841	17,277
Equity securities	0	0
Financial Liabilities
Derivative financial instruments	26,701	28,305
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Debt securities AFS	0	0
Derivative financial instruments	0	0
Loans held for sale	0	0
Equity securities	0	0
Financial Liabilities
Derivative financial instruments	0	0
Fair Value, Measurements, Nonrecurring
Financial Assets
Loans	896	1,839
OREO	5,085	6,421
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Loans	0	0
OREO	0	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Loans	0	0
OREO	0	0
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Loans	896	1,839
OREO	$ 5,085	$ 6,421