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Loan Quality (Troubled Debt Restructuring Loans) (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2020 USD ($) item contract	Dec. 31, 2019 USD ($) contract
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		19	16
Troubled Debt Restructurings: Recorded Investment		$ 11,011	$ 10,446
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		1,119
Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	10,803	$ 10,446
Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 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		$ 434	$ 444
Residential Real Estate - Construction [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 434	$ 444
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		4	4
Troubled Debt Restructurings: Recorded Investment		$ 637	$ 659
Residential Real Estate [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 637	$ 659
Commercial Real Estate - Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		4
Troubled Debt Restructurings: Recorded Investment		$ 1,224
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		425
Commercial Real Estate - Owner Occupied [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 1,224
Commercial Real Estate - Farm Land [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		6
Troubled Debt Restructurings: Recorded Investment		$ 2,257
Troubled Debt Restructurings, New During Period, Number of Contracts | item		1
New During Period, Pre-TDR Modification		$ 650
New During Period, After-TDR Modification		650
New During Period, Recorded Investment		694
Commercial Real Estate - Farm Land [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 2,257
Commercial Real Estate - Construction And Land [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		2
Troubled Debt Restructurings: Recorded Investment		$ 6,129
Commercial Real Estate - Construction And Land [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 6,129
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		2	2
Troubled Debt Restructurings: Recorded Investment		$ 330	$ 364
Commercial Real Estate [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	122	$ 364
Commercial Real Estate [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 208
[1] The performing status is determined by the loan’s compliance with the modified terms.

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

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Amount, after troubled debt restructuring, of modified financing receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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