Fair Value Disclosures - Changes in Fair Value for Financial Assets (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract]
Loans held for sale			$ 1,739,000	$ (1,806,000)
Capitalized mortgage loan servicing rights			(15,000)	9,596,000
Asset Impairment Charges [Abstract]
Collateral dependent loans, carrying amount	$ 2,800,000		2,800,000		$ 2,200,000
Collateral dependent loans, valuation allowance	2,400,000		2,400,000		2,100,000
Accounts receivable, credit loss expense (reversal)	1,700,000	$ 100,000	2,000,000	200,000
Other real estate, carrying amount	100,000		100,000		0
Other real estate, valuation allowance	100,000		100,000		$ 0
Other real estate, impairment charges	$ 100,000	$ 0	100,000	0
Mortgage Loans
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract]
Loans held for sale			1,739,000	(1,806,000)
Mortgage Loan Servicing, net
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract]
Capitalized mortgage loan servicing rights			$ (15,000)	$ 9,596,000