Statement of Accounting Policies - Additional information (Details) - USD ($)		1 Months Ended	12 Months Ended
	Jan. 01, 2020	Feb. 28, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2021	Jan. 01, 2019
Property Plant And Equipment [Line Items]
Minimum Amount of Loans To be Evaluated Individually for Analyze			$ 500,000
Amortization Of Mortgage Servicing Rights Excluding Valuation Adjustments			$ 7,300,000	$ 3,800,000	$ 3,800,000
Percentage Of Revenue			5.60%
Percentage Of Consolidated Net Income			5.50%
Percentage Of Assets			0.50%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability			$ 0
Revenue from Wealth Management			6,200,000	3,100,000	2,900,000
Insurance Commissions and Fees			16,788,000	14,118,000	14,085,000
Cumulative effect adjustment through retained earnings, net of tax		$ 47,000	(2,566,000)
Operating Lease, Right-of-Use Asset			16,900,000	8,900,000
Operating Lease, Liability			17,766,000	9,500,000
Other Non Interest Income [Member]
Property Plant And Equipment [Line Items]
Gains (Losses) on Sales of Other Real Estate			19,000	108,000	28,000
Deposit Account [Member]
Property Plant And Equipment [Line Items]
Revenues			10,200,000	7,100,000	7,600,000
Credit and Debit Card [Member]
Property Plant And Equipment [Line Items]
Revenues			9,300,000	4,700,000	4,100,000
New Renewal Policies [Member]
Property Plant And Equipment [Line Items]
Insurance Commissions and Fees			15,400,000	13,200,000	13,100,000
Contingent Policies [Member]
Property Plant And Equipment [Line Items]
Insurance Commissions and Fees			$ 1,400,000	$ 921,000	$ 1,000,000.0
Minimum [Member] | Noncompete Agreements [Member]
Property Plant And Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life			5 years
Maximum [Member] | Customer Contracts [Member]
Property Plant And Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life			10 years
Accounting Standards Update 2016-13 [Member]
Property Plant And Equipment [Line Items]
Change in accounting principle, accounting standards update, adopted			true			true
Accounting standards update, adoption date			Jan. 01, 2020			Jan. 01, 2020
Addition of allowance for credit losses	$ 7,600,000
Cumulative effect adjustment through retained earnings, net of tax			$ 2,600,000
Increase in allowance for credit losses			2,400,000
Off-balance sheet credit exposures			900,000
Cumulative effect adjustment through retained earnings, tax			$ 700,000
Estimates losses forecast period using moody's baseline economic forecasts			1 year
Historical loss experience period			3 years
Accounting Standards Update 2016-02 [Member]
Property Plant And Equipment [Line Items]
Operating Lease, Right-of-Use Asset							$ 8,800,000
Operating Lease, Liability							$ 9,300,000
Accounting Standards Update 2017-12 [Member]
Property Plant And Equipment [Line Items]
Change in accounting principle, accounting standards update, adopted				true
Accounting standards update, adoption date				Dec. 31, 2019
Accounting Standards Update 2018-13 [Member]
Property Plant And Equipment [Line Items]
Change in accounting principle, accounting standards update, adopted			true
Accounting standards update, adoption date			Jan. 01, 2020
Change in accounting principle, accounting standards update, immaterial effect [true false]			false
Accounting Standards Update 2017-04 [Member]
Property Plant And Equipment [Line Items]
Change in accounting principle, accounting standards update, adopted			true
Accounting standards update, adoption date			Jan. 01, 2020
FHLB of Cincinnati [Member]
Property Plant And Equipment [Line Items]
Balance Of Stock			$ 16,000,000.0	$ 11,900,000