Fair Value of Assets and Liabilities - Assets Measured at Fair Value Recurring (Details) - USD ($) $ in Thousands		Jun. 30, 2023	Dec. 31, 2022
Assets:
Fair Value	[1]	$ 1,133,439	$ 1,131,399
U.S. Treasury and government agencies
Assets:
Fair Value		75,255	152,422
U.S. government sponsored agencies
Assets:
Fair Value		98,324	88,115
States and political subdivisions
Assets:
Fair Value		248,271	225,882
Residential mortgage-backed securities
Assets:
Fair Value		635,487	604,653
Commercial mortgage-backed securities
Assets:
Fair Value		52,830	50,049
Bank-issued trust preferred securities
Assets:
Fair Value		23,272	10,278
Recurring | Level 1
Assets:
Fair Value		75,255	152,422
Equity investment securities		175	147
Derivative assets		0	0
Liabilities:
Derivative liabilities		0	0
Recurring | Level 2
Assets:
Fair Value		1,056,342	978,977
Equity investment securities		200	199
Derivative assets		30,903	34,123
Liabilities:
Derivative liabilities		$ 25,591	$ 28,529
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Accrued expenses and other liabilities	Accrued expenses and other liabilities
Recurring | Level 3
Assets:
Fair Value		$ 1,842	$ 0
Equity investment securities		0	0
Derivative assets		0	0
Liabilities:
Derivative liabilities		0	0
Recurring | U.S. Treasury and government agencies | Level 1
Assets:
Fair Value		75,255	152,422
Recurring | U.S. Treasury and government agencies | Level 2
Assets:
Fair Value		0	0
Recurring | U.S. Treasury and government agencies | Level 3
Assets:
Fair Value		0	0
Recurring | U.S. government sponsored agencies | Level 1
Assets:
Fair Value		0	0
Recurring | U.S. government sponsored agencies | Level 2
Assets:
Fair Value		98,324	88,115
Recurring | U.S. government sponsored agencies | Level 3
Assets:
Fair Value		0	0
Recurring | States and political subdivisions | Level 1
Assets:
Fair Value		0	0
Recurring | States and political subdivisions | Level 2
Assets:
Fair Value		248,271	225,882
Recurring | States and political subdivisions | Level 3
Assets:
Fair Value		0	0
Recurring | Residential mortgage-backed securities | Level 1
Assets:
Fair Value		0	0
Recurring | Residential mortgage-backed securities | Level 2
Assets:
Fair Value		635,487	604,653
Recurring | Residential mortgage-backed securities | Level 3
Assets:
Fair Value		0	0
Recurring | Commercial mortgage-backed securities | Level 1
Assets:
Fair Value		0	0
Recurring | Commercial mortgage-backed securities | Level 2
Assets:
Fair Value		52,830	50,049
Recurring | Commercial mortgage-backed securities | Level 3
Assets:
Fair Value		0	0
Recurring | Bank-issued trust preferred securities | Level 1
Assets:
Fair Value		0	0
Recurring | Bank-issued trust preferred securities | Level 2
Assets:
Fair Value		21,430	10,278
Recurring | Bank-issued trust preferred securities | Level 3
Assets:
Fair Value		$ 1,842	$ 0

[1]     Available-for-sale investment securities and held-to-maturity investment securities are presented net of allowance for credit losses of $0 and $241, respectively, at June 30, 2023 and December 31, 2022.