Loans and Allowance for Credit Losses - Restructured Loans that are Considered to be in Default (Details)	12 Months Ended
Dec. 31, 2022 USD ($) Contract	Dec. 31, 2021 USD ($) Contract	Dec. 31, 2020 USD ($) Contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts \| Contract	0	2	3
Financing Receivable, Troubled Debt Restructuring, Subsequent Default \| $	$ 0	$ 244,000	$ 108,000
Residential Real Estate [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts \| Contract	0	0	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default \| $	$ 0	$ 0	$ 34,000
Loans To Individuals [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts \| Contract	0	1	2
Financing Receivable, Troubled Debt Restructuring, Subsequent Default \| $	$ 0	$ 21,000	$ 74,000
Commercial Loan [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts \| Contract	0	1	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default \| $	$ 0	$ 223,000	$ 0
Automobiles \| Loans To Individuals [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts \| Contract	0	1	2
Financing Receivable, Troubled Debt Restructuring, Subsequent Default \| $	$ 0	$ 21,000	$ 74,000
Time and demand loans \| Commercial Loan [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts \| Contract	0	1	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default \| $	$ 0	$ 223,000	$ 0
Junior Lien \| Residential Real Estate [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts \| Contract	0	0	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default \| $	$ 0	$ 0	$ 34,000

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No definition available.

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Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-Subparagraph (a)(2)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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