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Loan Quality And Allowance For Loan Losses (Troubled Debt Restructuring Loans) (Details)		9 Months Ended
		Sep. 30, 2020 USD ($) contract	Dec. 31, 2019 USD ($) contract
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		19	16
Troubled Debt Restructurings: Recorded Investment		$ 11,113,000	$ 10,446,000
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		3
New During Period, Pre-TDR Modification		$ 1,076,000
New During Period, After-TDR Modification		1,076,000
New During Period, Recorded Investment		1,076,000
Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	10,670,000	$ 10,446,000
Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 443,000
Residential Real Estate - Construction [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		1	1
Troubled Debt Restructurings: Recorded Investment		$ 437,000	$ 444,000
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	[1]	$ 437,000	$ 444,000
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		4	4
Troubled Debt Restructurings: Recorded Investment		$ 643,000	$ 659,000
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 [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 643,000	$ 659,000
Commercial Real Estate - Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		4	2
Troubled Debt Restructurings: Recorded Investment		$ 1,238,000	$ 846,000
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		2
New During Period, Pre-TDR Modification		$ 426,000
New During Period, After-TDR Modification		426,000
New During Period, Recorded Investment		426,000
Commercial Real Estate - Owner Occupied [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	795,000	$ 846,000
Commercial Real Estate - Owner Occupied [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 443,000
Commercial Real Estate - Farm Land [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		6	5
Troubled Debt Restructurings: Recorded Investment		$ 2,235,000	$ 1,646,000
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		$ 650,000
New During Period, After-TDR Modification		650,000
New During Period, Recorded Investment		650,000
Commercial Real Estate - Farm Land [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 2,235,000	$ 1,646,000
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		$ 6,221,000	$ 6,487,000
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]	$ 6,221,000	$ 6,487,000
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		2	2
Troubled Debt Restructurings: Recorded Investment		$ 339,000	$ 364,000
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	[1]	$ 339,000	$ 364,000
[1] The performing status is determined by the loan’s compliance with the modified terms.

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