Loans - Non-Accrual and Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	$ 4,301	$ 3,843
Total Non-Accrual	14,929	14,602
Loans Past Due Over 89 Days Still Accruing	383	156
Commercial and Industrial Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	2,014	1,989
Total Non-Accrual	10,470	10,530
Loans Past Due Over 89 Days Still Accruing	383	0
Commercial Real Estate Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	58	145
Total Non-Accrual	2,124	2,243
Loans Past Due Over 89 Days Still Accruing	0	156
Agricultural Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Loss	1,027	1,041
Total Non-Accrual	1,055	1,136
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	138	1
Total Non-Accrual	216	24
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	17	16
Total Non-Accrual	17	18
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	61	64
Total Non-Accrual	61	64
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	986	587
Total Non-Accrual	986	587
Loans Past Due Over 89 Days Still Accruing	$ 0	$ 0