Fair Value - Fair Value of Assets Measured on Recurring and Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financial Assets
Debt securities available-for-sale	$ 1,949,463	$ 1,836,020
Other real estate owned	7,315	7,560
Fair Value, Measurements, Recurring
Financial Assets
Debt securities available-for-sale	1,949,463	1,836,020
Derivative financial instruments	34,935	31,481
Loans held for sale	9,475	4,391
Equity securities	13,506	13,623
Financial Liabilities
Derivative financial instruments	30,037	28,879
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Debt securities available-for-sale	192	192
Derivative financial instruments	0	0
Loans held for sale	0	0
Equity securities	13,506	13,623
Financial Liabilities
Derivative financial instruments	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Debt securities available-for-sale	1,949,271	1,835,828
Derivative financial instruments	34,935	31,481
Loans held for sale	9,475	4,391
Equity securities	0	0
Financial Liabilities
Derivative financial instruments	30,037	28,879
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Debt securities available-for-sale	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	2,504	15,242
Other real estate owned	7,315	7,560
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Loans	0	0
Other real estate owned	0	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2)
Financial Assets
Loans	0	0
Other real estate owned	0	0
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Financial Assets
Loans	2,504	15,242
Other real estate owned	$ 7,315	$ 7,560