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Note 8 - Loans - Nonaccrual Loans and Loans Past Due Ninety Days or More and Still Accruing (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Loans past due 90+ days and accruing | $ 1,207 | $ 2,906
Nonaccrual loans | 9,218 | 13,113
Residential Portfolio Segment [Member] |  |
Loans past due 90+ days and accruing | 1,002 | 2,003
Nonaccrual loans | 5,078 | 5,016
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Senior Lien [Member] |  |
Loans past due 90+ days and accruing | 878 | 1,633
Nonaccrual loans | 4,679 | 4,750
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Junior Lien [Member] |  |
Loans past due 90+ days and accruing | 53 | 151
Nonaccrual loans | 326 | 239
Residential Portfolio Segment [Member] | Home Equity Line of Credit 1 [Member] |  |
Loans past due 90+ days and accruing | 71 | 219
Nonaccrual loans | 73 | 27
Commercial Portfolio Segment [Member] |  |
Loans past due 90+ days and accruing | 165 | 871
Nonaccrual loans | 4,124 | 8,083
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] |  |
Loans past due 90+ days and accruing | 107 | 394
Nonaccrual loans | 1,148 | 3,958
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
Loans past due 90+ days and accruing | 15 | 18
Nonaccrual loans | 1,051 | 2,111
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |
Loans past due 90+ days and accruing | 0 | 0
Nonaccrual loans | 1,311 | 52
Commercial Portfolio Segment [Member] | Loans Secured by Farmland [Member] |  |
Loans past due 90+ days and accruing | 43 | 459
Nonaccrual loans | 565 | 1,297
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] |  |
Loans past due 90+ days and accruing | 0 | 0
Nonaccrual loans | 0 | 665
Commercial Portfolio Segment [Member] | Other Commercial Loans [Member] |  |
Loans past due 90+ days and accruing | 0 | 0
Nonaccrual loans | 49 | 0
Consumer Portfolio Segment [Member] |  |
Loans past due 90+ days and accruing | 40 | 32
Nonaccrual loans | $ 16 | $ 14

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