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Loans (Non-accrual and Past Due Loans) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |  |
Non-accrual With No Allowance For Credit Loss | $ 9,461 | [1] | $ 10,119 | [2]
Non-Accrual | 20,994 |  | 21,507 |
Loans Past Due Over 89 Days Still Accruing | 0 |  | 0 |
Commercial and Industrial Loans |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Non-accrual With No Allowance For Credit Loss | 4,061 | [1] | 4,571 | [2]
Non-Accrual | 7,312 |  | 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 Loss | 3,144 | [1] | 3,152 | [2]
Non-Accrual | 10,133 |  | 10,188 |
Loans Past Due Over 89 Days Still Accruing | 0 |  | 0 |
Agricultural Loans |  |  |  |
Financing Receivable, Past Due [Line Items] |  |  |  |
Non-accrual With No Allowance For Credit Loss | 1,220 | [1] | 1,291 | [2]
Non-Accrual | 1,841 |  | 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 Loss | 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 Loss | 293 | [1] | 271 | [2]
Non-Accrual | 293 |  | 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 Loss | 109 | [1] | 77 | [2]
Non-Accrual | 112 |  | 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 Loss | 154 | [1] | 86 | [2]
Non-Accrual | 154 |  | 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 Loss | 480 | [1] | 671 | [2]
Non-Accrual | 1,149 |  | 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 $20,994.
[2] | Includes non-accrual loans with no allowance for credit loss and are also included in Non-Accrual loans totaling $21,507.

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