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Loan Quality And Allowance For Loan Losses (Troubled Debt Restructuring Loans) (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021 USD ($) contract	Dec. 31, 2020 USD ($) contract item
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract	20	19
Troubled Debt Restructurings: Recorded Investment	$ 6,342	$ 11,011
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Number of Contracts | contract
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Recorded Investment
Troubled Debt Restructurings, New During Period, Number of Contracts | item		3
New During Period, Pre-TDR Modification		$ 1,076
New During Period, After-TDR Modification		1,076
New During Period, Recorded Investment		1,076
Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	5,088	10,803
Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	$ 1,254	$ 208
Residential Real Estate - Construction [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract	1	1
Troubled Debt Restructurings: Recorded Investment	$ 427	$ 434
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Number of Contracts | contract
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Recorded Investment
Residential Real Estate - Construction [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment		$ 434
Residential Real Estate - Construction [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	$ 427
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract	5	4
Troubled Debt Restructurings: Recorded Investment	$ 658	$ 637
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Number of Contracts | contract
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Recorded Investment
Troubled Debt Restructurings, New During Period, Number of Contracts | contract	1
New During Period, Pre-TDR Modification	$ 41
New During Period, After-TDR Modification	41
New During Period, Recorded Investment	41
Residential Real Estate [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	617	$ 637
Residential Real Estate [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	$ 41
Commercial Real Estate - Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract	4	4
Troubled Debt Restructurings: Recorded Investment	$ 1,181	$ 1,224
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Number of Contracts | contract
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Recorded Investment
Troubled Debt Restructurings, New During Period, Number of Contracts | item		2
New During Period, Pre-TDR Modification		$ 426
New During Period, After-TDR Modification		426
New During Period, Recorded Investment		423
Commercial Real Estate - Owner Occupied [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	831	$ 1,224
Commercial Real Estate - Owner Occupied [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	$ 350
Commercial Real Estate - Farm Land [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract	6	6
Troubled Debt Restructurings: Recorded Investment	$ 2,173	$ 2,257
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Number of Contracts | contract
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Recorded Investment
Troubled Debt Restructurings, New During Period, Number of Contracts | contract		1
New During Period, Pre-TDR Modification		$ 650
New During Period, After-TDR Modification		650
New During Period, Recorded Investment		653
Commercial Real Estate - Farm Land [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	$ 2,173	$ 2,257
Commercial Real Estate - Construction And Land [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract	2	2
Troubled Debt Restructurings: Recorded Investment	$ 1,600	$ 6,129
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Number of Contracts | contract
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Recorded Investment
Commercial Real Estate - Construction And Land [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	1,360	$ 6,129
Commercial Real Estate - Construction And Land [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	$ 240
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract	2	2
Troubled Debt Restructurings: Recorded Investment	$ 303	$ 330
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Number of Contracts | contract
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Recorded Investment
Commercial Real Estate [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	107	122
Commercial Real Estate [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	$ 196	$ 208

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
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-Topic 310
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