Loans - Non-Accrual and Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	$ 6,474	$ 5,882
Total Non-Accrual	9,898	9,136
Loans Past Due Over 89 Days Still Accruing	85	55
Commercial and Industrial Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	2,427	1,864
Total Non-Accrual	4,450	3,707
Loans Past Due Over 89 Days Still Accruing	0	0
Commercial Real Estate Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	1,355	942
Total Non-Accrual	2,407	1,889
Loans Past Due Over 89 Days Still Accruing	85	55
Agricultural Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	630	665
Total Non-Accrual	837	879
Loans Past Due Over 89 Days Still Accruing	0	0
Leases
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	0	0
Total Non-Accrual	0	0
Loans Past Due Over 89 Days Still Accruing	0	0
Home Equity Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	504	1,033
Total Non-Accrual	504	1,033
Loans Past Due Over 89 Days Still Accruing	0	0
Consumer Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	77	111
Total Non-Accrual	77	111
Loans Past Due Over 89 Days Still Accruing	0	0
Credit Cards
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	50	142
Total Non-Accrual	50	142
Loans Past Due Over 89 Days Still Accruing	0	0
Residential Mortgage Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	1,431	1,125
Total Non-Accrual	1,573	1,375
Loans Past Due Over 89 Days Still Accruing	$ 0	$ 0