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Loans and Leases - Nonaccrual Loans (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	$ 40,450,000		$ 40,450,000		$ 42,038,000
Nonaccrual Loans and Leases	62,253,000		62,253,000		62,165,000
Loans and Leases Past Due Over 89 Days and Accruing	215,000		215,000		101,000
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	44,000		44,000		0
Nonaccrual Loans and Leases	2,921,000		2,921,000		2,273,000
Loans and Leases Past Due Over 89 Days and Accruing	0		0		0
Commercial and Industrial | Other Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	44,000		44,000		0
Nonaccrual Loans and Leases	2,921,000		2,921,000		2,253,000
Loans and Leases Past Due Over 89 Days and Accruing	0		0		0
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	40,406,000		40,406,000		42,038,000
Nonaccrual Loans and Leases	44,104,000		44,104,000		44,450,000
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		0
Nonaccrual Loans and Leases	137,000		137,000		170,000
Loans and Leases Past Due Over 89 Days and Accruing	0		0		0
Commercial Real Estate | Other Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	40,406,000		40,406,000		42,038,000
Nonaccrual Loans and Leases	43,967,000		43,967,000		44,280,000
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		0
Nonaccrual Loans and Leases	15,011,000		15,011,000		15,172,000
Loans and Leases Past Due Over 89 Days and Accruing	0		0		0
Residential real estate | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	0		0		0
Nonaccrual Loans and Leases	3,470,000		3,470,000		3,230,000
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		0
Nonaccrual Loans and Leases	11,541,000		11,541,000		11,942,000
Loans and Leases Past Due Over 89 Days and Accruing	0		0		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	217,000		217,000		270,000
Loans and Leases Past Due Over 89 Days and Accruing	215,000		215,000		101,000
Consumer and other | Other Financing Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual Loans and Leases with no ACL	0		0		0
Nonaccrual Loans and Leases	195,000		195,000		230,000
Loans and Leases Past Due Over 89 Days and Accruing	215,000		215,000		101,000
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	22,000		22,000		40,000
Loans and Leases Past Due Over 89 Days and Accruing	$ 0		$ 0		$ 0

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