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Note 3 - Loans and Allowance for Loan Losses - Loans Modified as Troubled Debt Restructurings (Details) | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Number of Contracts | 45 | 36
Pre- Modification Recorded Principal Balance | $ 22,498,000 | $ 2,796,000
Post- Modification Recorded Principal Balance | $ 23,298,000 | $ 2,797,000
Commercial Portfolio Segment [Member] |  |
Number of Contracts | 23 | 8
Pre- Modification Recorded Principal Balance | $ 21,896,000 | $ 2,191,000
Post- Modification Recorded Principal Balance | $ 22,698,000 | $ 2,191,000
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Number of Contracts | 13 | 5
Pre- Modification Recorded Principal Balance | $ 6,914,000 | $ 435,000
Post- Modification Recorded Principal Balance | $ 7,717,000 | $ 435,000
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
Number of Contracts | 0 | 1
Pre- Modification Recorded Principal Balance | $ 0 | $ 87,000
Post- Modification Recorded Principal Balance | $ 0 | $ 87,000
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
Number of Contracts | 8 | 2
Pre- Modification Recorded Principal Balance | $ 14,663,000 | $ 1,669,000
Post- Modification Recorded Principal Balance | $ 14,663,000 | $ 1,669,000
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
Number of Contracts | 2 | 0
Pre- Modification Recorded Principal Balance | $ 319,000 | $ 0
Post- Modification Recorded Principal Balance | $ 318,000 | $ 0
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
Number of Contracts | 0 | 0
Pre- Modification Recorded Principal Balance | $ 0 | $ 0
Post- Modification Recorded Principal Balance | $ 0 | $ 0
Retail Portfolio Segment [Member] |  |
Number of Contracts | 22 | 28
Pre- Modification Recorded Principal Balance | $ 602,000 | $ 605,000
Post- Modification Recorded Principal Balance | $ 600,000 | $ 606,000
Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |
Number of Contracts | 16 | 20
Pre- Modification Recorded Principal Balance | $ 451,000 | $ 295,000
Post- Modification Recorded Principal Balance | $ 452,000 | $ 296,000
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |
Number of Contracts | 6 | 8
Pre- Modification Recorded Principal Balance | $ 151,000 | $ 310,000
Post- Modification Recorded Principal Balance | $ 148,000 | $ 310,000

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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 http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524 + Details
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