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Note 3 - Loans and Allowance for Loan Losses - Loans Modified as Troubled Debt Restructurings (Details) | 3 Months Ended
--- | ---
Mar. 31, 2021 USD ($) | Mar. 31, 2020 USD ($)
Number of Contracts | 3 | 17
Pre- Modification Recorded Principal Balance | $ 130,000 | $ 10,265,000
Post- Modification Recorded Principal Balance | $ 129,000 | $ 10,847,000
Commercial Portfolio Segment [Member] |  |
Number of Contracts | 1 | 14
Pre- Modification Recorded Principal Balance | $ 23,000 | $ 10,200,000
Post- Modification Recorded Principal Balance | $ 22,000 | $ 10,795,000
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Number of Contracts | 1 | 6
Pre- Modification Recorded Principal Balance | $ 23,000 | $ 6,539,000
Post- Modification Recorded Principal Balance | $ 22,000 | $ 6,536,000
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 | 8
Pre- Modification Recorded Principal Balance | $ 0 | $ 3,661,000
Post- Modification Recorded Principal Balance | $ 0 | $ 4,259,000
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 | 0
Pre- Modification Recorded Principal Balance | $ 0 | $ 0
Post- Modification Recorded Principal Balance | $ 0 | $ 0
Retail Portfolio Segment [Member] |  |
Number of Contracts | 2 | 3
Pre- Modification Recorded Principal Balance | $ 107,000 | $ 65,000
Post- Modification Recorded Principal Balance | $ 107,000 | $ 52,000
Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |
Number of Contracts | 1 | 3
Pre- Modification Recorded Principal Balance | $ 71,000 | $ 65,000
Post- Modification Recorded Principal Balance | $ 71,000 | $ 52,000
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |
Number of Contracts | 1 | 0
Pre- Modification Recorded Principal Balance | $ 36,000 | $ 0
Post- Modification Recorded Principal Balance | $ 36,000 | $ 0

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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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