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Loans and Leases - Nonaccrual Loans (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	$ 9,527,000		$ 9,527,000		$ 15,193,000
Nonaccrual Loans and Leases	31,381,000		31,381,000		28,289,000
Loans and Leases Past Due Over 89 Days and Accruing	52,000		52,000		25,000
Interest on nonaccrual loans	0	$ 0	0	$ 0
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	2,494,000		2,494,000		411,000
Nonaccrual Loans and Leases	3,163,000		3,163,000		618,000
Loans and Leases Past Due Over 89 Days and Accruing	0		0		25,000
Commercial and industrial | Commercial, industrial, real estate, consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	2,494,000		2,494,000		411,000
Nonaccrual Loans and Leases	3,163,000		3,163,000		618,000
Loans and Leases Past Due Over 89 Days and Accruing	0		0		25,000
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	7,033,000		7,033,000		13,287,000
Nonaccrual Loans and Leases	10,934,000		10,934,000		13,858,000
Loans and Leases Past Due Over 89 Days and Accruing	0		0		0
Commercial real estate | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	0		0		186,000
Nonaccrual Loans and Leases	174,000		174,000		186,000
Loans and Leases Past Due Over 89 Days and Accruing	0		0		0
Commercial real estate | Commercial, industrial, real estate, consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	7,033,000		7,033,000		13,101,000
Nonaccrual Loans and Leases	10,760,000		10,760,000		13,672,000
Loans and Leases Past Due Over 89 Days and Accruing	0		0		0
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	0		0		1,495,000
Nonaccrual Loans and Leases	16,924,000		16,924,000		13,544,000
Loans and Leases Past Due Over 89 Days and Accruing	1,000		1,000		0
Residential real estate | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	0		0		318,000
Nonaccrual Loans and Leases	3,112,000		3,112,000		2,391,000
Loans and Leases Past Due Over 89 Days and Accruing	0		0		0
Residential real estate | Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	0		0		1,177,000
Nonaccrual Loans and Leases	13,812,000		13,812,000		11,153,000
Loans and Leases Past Due Over 89 Days and Accruing	1,000		1,000		0
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	0		0		0
Nonaccrual Loans and Leases	360,000		360,000		269,000
Loans and Leases Past Due Over 89 Days and Accruing	51,000		51,000		0
Consumer and other | Commercial, industrial, real estate, consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	0		0		0
Nonaccrual Loans and Leases	293,000		293,000		175,000
Loans and Leases Past Due Over 89 Days and Accruing	51,000		51,000		0
Consumer and other | Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	0		0		0
Nonaccrual Loans and Leases	67,000		67,000		94,000
Loans and Leases Past Due Over 89 Days and Accruing	$ 0		$ 0		$ 0

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