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Fair Value (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Impaired loans, carrying amount | [1] |  | $ 7,229,000 |
Valuation allowance for loans losses |  |  | 3,371,000 |
Other real estate carried at fair value less cost to sell |  | $ 0 | 0 |
Other real estate, adjustments to carrying value less costs to sell charged to earnings |  | 0 | 0 |
Individually analyzed/Impaired loans |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Impaired loans, carrying amount |  |  | 5,574,000 |
Valuation allowance for loans losses |  |  | 2,971,000 |
Increase in provision for credit losses |  |  | 1,149,000 |
Collateral | Individually analyzed/Impaired loans |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Impaired loans, carrying amount |  | 14,873,000 |  |
Valuation allowance for loans losses |  | 5,657,000 |  |
Increase in provision for credit losses |  | 330,000 |  |
Loans Held-for-Sale |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Gain (losses) from changes in fair value included in earnings |  | 191,000 | 303,000 | $ (111,000)
Obligations of State and Political Subdivisions |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Total gains (losses) included in earnings attributable to changes in fair value |  | (26,000) | (25,000) |
Fair Value, Measurements, Recurring |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Securities |  | 1,217,852,000 | 854,825,000 |
Fair Value, Measurements, Recurring | Obligations of State and Political Subdivisions |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Securities |  | 581,247,000 | 324,300,000 |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Securities |  | 497,000 | 4,021,000 |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Obligations of State and Political Subdivisions |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Securities |  | $ 497,000 | $ 4,021,000 |
[1] | Unpaid Principal Balance is the remaining contractual payments gross of partial charge-offs and discounts.

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