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Disclosures of Fair Values of Financial Instruments - Significant Unobservable Inputs Used in Valuation of Level 3 Fair Value Measurements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Mortgage Servicing Rights | Level 3 | Minimum | Valuation, Market Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
PSA standard prepayment model rate	242.00%	152.00%
Mortgage Servicing Rights | Level 3 | Maximum | Valuation, Market Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
PSA standard prepayment model rate	441.00%	437.00%
Mortgage Servicing Rights | Level 3 | Weighted Average | Valuation, Market Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
PSA standard prepayment model rate	384.00%	189.00%
Fair Value, Nonrecurring | Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total assets	$ 420	$ 517
Collateral Dependent Loans | Level 3 | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans		0.00%
Collateral Dependent Loans | Level 3 | Minimum | Valuation, Market Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans	0.00%
Collateral Dependent Loans | Level 3 | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans		40.00%
Collateral Dependent Loans | Level 3 | Maximum | Valuation, Market Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans	40.00%
Collateral Dependent Loans | Level 3 | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans		(20.00%)
Collateral Dependent Loans | Level 3 | Weighted Average | Valuation, Market Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans	(20.00%)
Collateral Dependent Loans | Fair Value, Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total assets	$ 6,750	$ 14,876
Collateral Dependent Loans | Fair Value, Nonrecurring | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total assets	$ 6,750	$ 14,876
Foreclosed Assets Held-for-sale | Level 3 | Minimum | Valuation, Market Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans	0.00%	0.00%
Foreclosed Assets Held-for-sale | Level 3 | Maximum | Valuation, Market Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans	40.00%	40.00%
Foreclosed Assets Held-for-sale | Level 3 | Weighted Average | Valuation, Market Approach
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans	35.00%	35.00%
Foreclosed Assets Held-for-sale | Fair Value, Nonrecurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total assets	$ 2,068	$ 290

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Discount To Reflect Realizable Values.

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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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