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Fair Value Unobservable Inputs (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Impaired Loans [Member]
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Assets, Fair Value Disclosure	$ 286	$ 319
Impaired Loans [Member] | Appraisal, Appraisal Discount [Member] | Minimum
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Input Percent	10.00%	10.00%
Impaired Loans [Member] | Appraisal, Appraisal Discount [Member] | Maximum
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Input Percent	10.00%	10.00%
Impaired Loans [Member] | Appraisal, Appraisal Discount [Member] | Weighted Average
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Input Percent	10.00%	10.00%
Mortgage Servicing Rights [Member]
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Assets, Fair Value Disclosure	$ 1,326	$ 1,330
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Prepayment Speed [Member] | Minimum
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Input Percent	13.00%	18.20%
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Prepayment Speed [Member] | Maximum
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Input Percent	15.80%	36.40%
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Prepayment Speed [Member] | Weighted Average
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Input Percent	15.20%	20.70%
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Discount Rate [Member] | Minimum
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Input Percent	9.50%	10.00%
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Discount Rate [Member] | Maximum
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Input Percent	11.50%	12.00%
Mortgage Servicing Rights [Member] | Discounted Cash Flow, Discount Rate [Member] | Weighted Average
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]
Unobservable Input, Input Percent	9.50%	10.00%

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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