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Note 3 - Loans and Allowance for Credit Losses - Loans Modified as Troubled Debt Restructurings (Details) | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Number of Contracts | 10 | 18
Pre- Modification Recorded Principal Balance | $ 7,351,000 | $ 4,333,000
Post- Modification Recorded Principal Balance | $ 7,350,000 | $ 4,329,000
Commercial Portfolio Segment [Member] |  |
Number of Contracts | 3 | 12
Pre- Modification Recorded Principal Balance | $ 6,593,000 | $ 3,802,000
Post- Modification Recorded Principal Balance | $ 6,593,000 | $ 3,801,000
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Number of Contracts | 3 | 10
Pre- Modification Recorded Principal Balance | $ 6,593,000 | $ 3,017,000
Post- Modification Recorded Principal Balance | $ 6,593,000 | $ 3,016,000
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Number of Contracts | 0 | 0
Pre- Modification Recorded Principal Balance | $ 0 | $ 0
Post- Modification Recorded Principal Balance | $ 0 | $ 0
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
Number of Contracts | 0 | 1
Pre- Modification Recorded Principal Balance | $ 0 | $ 692,000
Post- Modification Recorded Principal Balance | $ 0 | $ 692,000
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Number of Contracts | 0 | 0
Pre- Modification Recorded Principal Balance | $ 0 | $ 0
Post- Modification Recorded Principal Balance | $ 0 | $ 0
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Number of Contracts | 0 | 1
Pre- Modification Recorded Principal Balance | $ 0 | $ 93,000
Post- Modification Recorded Principal Balance | $ 0 | $ 93,000
Retail Portfolio Segment [Member] |  |
Number of Contracts | 7 | 6
Pre- Modification Recorded Principal Balance | $ 758,000 | $ 531,000
Post- Modification Recorded Principal Balance | $ 757,000 | $ 528,000
Retail Portfolio Segment [Member] | Home Equity Loan [Member] |  |
Number of Contracts | 0 | 4
Pre- Modification Recorded Principal Balance | $ 0 | $ 485,000
Post- Modification Recorded Principal Balance | $ 0 | $ 482,000
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |
Number of Contracts | 7 | 2
Pre- Modification Recorded Principal Balance | $ 758,000 | $ 46,000
Post- Modification Recorded Principal Balance | $ 757,000 | $ 46,000

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + 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 https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 + Details
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