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Note 3 - Loans and Allowance for Loan Losses (Details Textual) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
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Mortgage Loans in Process of Foreclosure, Amount | $ 1,100,000 | $ 813,000
Performing Financial Instruments [Member] |  |
Financing Receivable, Threshold Period Past Due (Day) | 90 days |
Nonperforming Financial Instruments [Member] |  |
Financing Receivable, Threshold Period Past Due (Day) | 90 days |

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- Definition Threshold period for when financing receivable is considered past due, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes threshold period past due to write off as uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447 + Details
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- Definition Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 35 -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL49126937-111524 + Details
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- Details
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