Loans (Non-accrual and Loans Past Due over 89 Days Still Accruing) (Details) - USD ($) $ in Thousands	Dec. 31, 2021		Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Losses	$ 3,843	[1]	$ 10,119	[2]
Non-Accrual	14,602		21,507
Loans Past Due Over 89 Days Still Accruing	156		0
Commercial and Industrial Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Losses	1,989	[1]	4,571	[2]
Non-Accrual	10,530		8,133
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 Losses	145	[1]	3,152	[2]
Non-Accrual	2,243		10,188
Loans Past Due Over 89 Days Still Accruing	156		0
Agricultural Loans
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Losses	1,041	[1]	1,291	[2]
Non-Accrual	1,136		1,915
Loans Past Due Over 89 Days Still Accruing	0		0
Leases
Financing Receivable, Past Due [Line Items]
Non-Accrual With No Allowance For Credit Losses	0	[1]	0	[2]
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 Losses	1	[1]	271	[2]
Non-Accrual	24		271
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 Losses	16	[1]	77	[2]
Non-Accrual	18		84
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 Losses	64	[1]	86	[2]
Non-Accrual	64		86
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 Losses	587	[1]	671	[2]
Non-Accrual	587		830
Loans Past Due Over 89 Days Still Accruing	$ 0		$ 0

[1] Includes non-accrual loans with no allowance for credit loss and are also included in Non-Accrual loans totaling $14,602.

[2] Includes non-accrual loans with no allowance for credit loss and are also included in Non-Accrual loans totaling $21,507