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Note 8 - Loans Receivable and Credit Disclosures - Average Recorded Investment and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Impaired financing receivable, with no related allowance, average recorded investment | $ 9,533 | $ 695
Impaired financing receivable, with no related allowance, interest income, accrual method | 6 | 51
Impaired financing receivable, with related allowance, average recorded investment | 1,719 | 2,595
Impaired financing receivable, with related allowance, interest income, accrual method |  | 1
Impaired financing receivable, average recorded investment | 11,252 | 3,290
Impaired financing receivable, interest income, accrual method | 6 | 52
Construction Real Estate [Member] |  |
Impaired financing receivable, with no related allowance, average recorded investment |  |
Impaired financing receivable, with no related allowance, interest income, accrual method |  |
Impaired financing receivable, with related allowance, average recorded investment |  |
Impaired financing receivable, with related allowance, interest income, accrual method |  |
Impaired financing receivable, average recorded investment |  |
Impaired financing receivable, interest income, accrual method |  |
Family Residential Real Estate 1-4 [Member] |  |
Impaired financing receivable, with no related allowance, average recorded investment | 283 | 247
Impaired financing receivable, with no related allowance, interest income, accrual method |  | 20
Impaired financing receivable, with related allowance, average recorded investment | 919 | 111
Impaired financing receivable, with related allowance, interest income, accrual method |  |
Impaired financing receivable, average recorded investment | 1,202 | 358
Impaired financing receivable, interest income, accrual method |  | 20
Commercial Real Estate Portfolio Segment [Member] |  |
Impaired financing receivable, with no related allowance, average recorded investment | 5,351 | 131
Impaired financing receivable, with no related allowance, interest income, accrual method |  | 31
Impaired financing receivable, with related allowance, average recorded investment | 488 |
Impaired financing receivable, with related allowance, interest income, accrual method |  |
Impaired financing receivable, average recorded investment | 5,839 | 131
Impaired financing receivable, interest income, accrual method |  | 31
Agriculture Real Estate [Member] |  |
Impaired financing receivable, with no related allowance, average recorded investment | 439 | 73
Impaired financing receivable, with no related allowance, interest income, accrual method | 6 |
Impaired financing receivable, with related allowance, average recorded investment |  |
Impaired financing receivable, with related allowance, interest income, accrual method |  |
Impaired financing receivable, average recorded investment | 439 | 73
Impaired financing receivable, interest income, accrual method | 6 |
Commercial Portfolio Segment [Member] |  |
Impaired financing receivable, with no related allowance, average recorded investment | 437 | 243
Impaired financing receivable, with no related allowance, interest income, accrual method |  |
Impaired financing receivable, with related allowance, average recorded investment | 84 | 2,468
Impaired financing receivable, with related allowance, interest income, accrual method |  |
Impaired financing receivable, average recorded investment | 521 | 2,711
Impaired financing receivable, interest income, accrual method |  |
Agriculture [Member] |  |
Impaired financing receivable, with no related allowance, average recorded investment | 2,979 |
Impaired financing receivable, with no related allowance, interest income, accrual method |  |
Impaired financing receivable, with related allowance, average recorded investment | 228 |
Impaired financing receivable, with related allowance, interest income, accrual method |  |
Impaired financing receivable, average recorded investment | 3,207 |
Impaired financing receivable, interest income, accrual method |  |
Consumer and Other [Member] |  |
Impaired financing receivable, with no related allowance, average recorded investment | 44 | 1
Impaired financing receivable, with no related allowance, interest income, accrual method |  |
Impaired financing receivable, with related allowance, average recorded investment |  | 16
Impaired financing receivable, with related allowance, interest income, accrual method |  | 1
Impaired financing receivable, average recorded investment | 44 | 17
Impaired financing receivable, interest income, accrual method |  | $ 1

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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 + Details
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