Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financial Assets
Securities available for sale	$ 1,361,682	$ 1,427,677
Fair Value, Measurements, Recurring
Financial Assets
Total investment securities	1,377,058	1,442,626
Corporate bonds
Financial Assets
Securities available for sale	4,207	4,030
Corporate bonds | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	4,207	4,030
Collateralized mortgage obligations | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	52,276	13,385
Small Business Administration
Financial Assets
Securities available for sale	4,361	5,430
Small Business Administration | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	4,361	5,430
Other investments measured at net asset value | Fair Value, Measurements, Recurring
Financial Assets
Equity securities	15,185	14,721
U.S. Treasury and U.S. government sponsored entities
Financial Assets
Securities available for sale	99,173	90,831
U.S. Treasury and U.S. government sponsored entities | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	99,173	90,831
State and political subdivisions
Financial Assets
Securities available for sale	588,357	658,815
State and political subdivisions | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	588,357	658,815
Mortgage-backed securities - residential
Financial Assets
Securities available for sale	613,308	655,186
Mortgage-backed securities - residential | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	613,308	655,186
Equity securities at fair value | Fair Value, Measurements, Recurring
Financial Assets
Equity securities	191	228
Interest rate swaps | Fair Value, Measurements, Recurring
Financial Assets
Derivative Assets	3,131	4,261
Financial Liabilities
Derivative liabilities	3,131	4,261
Mortgage banking derivative - liability | Fair Value, Measurements, Recurring
Financial Liabilities
Derivative liabilities	5
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Recurring
Financial Assets
Total investment securities	191	228
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate bonds | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateralized mortgage obligations | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Small Business Administration | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury and U.S. government sponsored entities | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | State and political subdivisions | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities - residential | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity securities at fair value | Fair Value, Measurements, Recurring
Financial Assets
Equity securities	191	228
Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swaps | Fair Value, Measurements, Recurring
Financial Assets
Derivative Assets	0	0
Financial Liabilities
Derivative liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage banking derivative - liability | Fair Value, Measurements, Recurring
Financial Liabilities
Derivative liabilities	0
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Recurring
Financial Assets
Total investment securities	1,361,680	1,427,674
Significant Other Observable Inputs (Level 2) | Corporate bonds | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	4,207	4,030
Significant Other Observable Inputs (Level 2) | Collateralized mortgage obligations | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	52,276	13,385
Significant Other Observable Inputs (Level 2) | Small Business Administration | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	4,361	5,430
Significant Other Observable Inputs (Level 2) | U.S. Treasury and U.S. government sponsored entities | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	99,173	90,831
Significant Other Observable Inputs (Level 2) | State and political subdivisions | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	588,357	658,815
Significant Other Observable Inputs (Level 2) | Mortgage-backed securities - residential | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	613,306	655,183
Significant Other Observable Inputs (Level 2) | Equity securities at fair value | Fair Value, Measurements, Recurring
Financial Assets
Equity securities	0	0
Significant Other Observable Inputs (Level 2) | Interest rate swaps | Fair Value, Measurements, Recurring
Financial Assets
Derivative Assets	3,131	4,261
Financial Liabilities
Derivative liabilities	3,131	4,261
Significant Other Observable Inputs (Level 2) | Mortgage banking derivative - liability | Fair Value, Measurements, Recurring
Financial Liabilities
Derivative liabilities	5
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Recurring
Financial Assets
Total investment securities	2	3
Significant Unobservable Inputs (Level 3) | Corporate bonds | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | Collateralized mortgage obligations | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | Small Business Administration | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | U.S. Treasury and U.S. government sponsored entities | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | State and political subdivisions | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	0	0
Significant Unobservable Inputs (Level 3) | Mortgage-backed securities - residential | Fair Value, Measurements, Recurring
Financial Assets
Securities available for sale	2	3
Significant Unobservable Inputs (Level 3) | Equity securities at fair value | Fair Value, Measurements, Recurring
Financial Assets
Equity securities	0	0
Significant Unobservable Inputs (Level 3) | Interest rate swaps | Fair Value, Measurements, Recurring
Financial Assets
Derivative Assets	0	0
Financial Liabilities
Derivative liabilities	0	$ 0
Significant Unobservable Inputs (Level 3) | Mortgage banking derivative - liability | Fair Value, Measurements, Recurring
Financial Liabilities
Derivative liabilities	$ 0