Summary of Significant Accounting Policies - Narrative (Details)			12 Months Ended
	Jul. 17, 2020 USD ($)	Jan. 01, 2020 USD ($)	Dec. 31, 2022 USD ($) renewal_option segment qtr	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of reportable operating segment | segment			1
Accrued interest reversed against interest income			$ 0	$ 0
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]			Accrued interest receivable and other assets	Accrued interest receivable and other assets
Accrued interest receivable on available-for-sale debt securities			$ 1,500,000	$ 2,200,000
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]			Accrued interest receivable and other assets	Accrued interest receivable and other assets
Accrued interest receivable on held-to-maturity debt securities			$ 1,300,000	$ 0
Accrued interest receivable			$ 17,300,000	$ 13,300,000
Period of delinquent loan			90 days
Number of quarters used in the mean loss calculation | qtr			8
DCF methodology, percentage (in percent)			86.00%	88.40%
WARM methodology, percentage (in percent)			14.00%	11.60%
Credit losses on OBS credit exposures			$ 603,000	$ 0	$ 0	$ 0
Number of options to renew | renewal_option			1
Percentage of total loans (in percent)			1.000	1.000
Decrease to retained earnings			$ (306,911,000)	$ (260,582,000)
Allowance for credit losses at acquisition	$ 980,000	$ 670,000
ASU No. 2016-13
Summary Of Significant Accounting Policies [Line Items]
Allowance for credit loss		$ 5,000,000
Percentage of total loans (in percent)		0.255
Decrease to retained earnings		$ 3,400,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Reduced interest rate modification period			6 months
Maximum
Summary Of Significant Accounting Policies [Line Items]
Reduced interest rate modification period			12 months
Premises and Equipment | Minimum
Summary Of Significant Accounting Policies [Line Items]
Useful lives of premises and equipment			3 years
Premises and Equipment | Maximum
Summary Of Significant Accounting Policies [Line Items]
Useful lives of premises and equipment			39 years
Furniture, Fixtures and Equipment | Minimum
Summary Of Significant Accounting Policies [Line Items]
Useful lives of premises and equipment			3 years
Furniture, Fixtures and Equipment | Maximum
Summary Of Significant Accounting Policies [Line Items]
Useful lives of premises and equipment			10 years
Buildings and Building Improvements | Minimum
Summary Of Significant Accounting Policies [Line Items]
Useful lives of premises and equipment			15 years
Buildings and Building Improvements | Maximum
Summary Of Significant Accounting Policies [Line Items]
Useful lives of premises and equipment			39 years
Core Deposit | FC Banc Corp
Summary Of Significant Accounting Policies [Line Items]
Amortization of intangible assets			4 years
Core Deposit | Lake National Bank
Summary Of Significant Accounting Policies [Line Items]
Amortization of intangible assets			10 years