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Note 7 - Loans Receivable and Credit Disclosures - Average Recorded Investment and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Impaired financing receivable, with no related allowance, average recorded investment | $ 2,126 | $ 15,001 | $ 2,568 | $ 12,266
Impaired financing receivable, with no related allowance, interest income, accrual method | 8 | 361 | 355 | 369
Impaired financing receivable, with related allowance, average recorded investment | 10,472 | 2,145 | 10,906 | 1,933
Impaired financing receivable, with related allowance, interest income, accrual method | 0 | 0 | 0 | 0
Impaired financing receivable, average recorded investment | 12,598 | 17,146 | 13,474 | 14,199
Impaired financing receivable, interest income, accrual method | 8 | 361 | 355 | 369
Construction Real Estate [Member] |  |  |  |
Impaired financing receivable, with no related allowance, average recorded investment | 0 | 83 | 84 | 41
Impaired financing receivable, with no related allowance, interest income, accrual method | 0 | 0 | 0 | 0
Impaired financing receivable, with related allowance, average recorded investment | 0 | 0 | 0 | 0
Impaired financing receivable, with related allowance, interest income, accrual method | 0 | 0 | 0 | 0
Impaired financing receivable, average recorded investment | 0 | 83 | 84 | 41
Impaired financing receivable, interest income, accrual method | 0 | 0 | 0 | 0
Family Residential Real Estate 1-4 [Member] |  |  |  |
Impaired financing receivable, with no related allowance, average recorded investment | 813 | 305 | 587 | 294
Impaired financing receivable, with no related allowance, interest income, accrual method | 8 | 0 | 19 | 0
Impaired financing receivable, with related allowance, average recorded investment | 164 | 957 | 336 | 938
Impaired financing receivable, with related allowance, interest income, accrual method | 0 | 0 | 0 | 0
Impaired financing receivable, average recorded investment | 977 | 1,262 | 923 | 1,232
Impaired financing receivable, interest income, accrual method | 8 | 0 | 19 | 0
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Impaired financing receivable, with no related allowance, average recorded investment | 132 | 11,091 | 162 | 8,221
Impaired financing receivable, with no related allowance, interest income, accrual method | 0 | 0 | 297 | 0
Impaired financing receivable, with related allowance, average recorded investment | 9,922 | 0 | 9,969 | 244
Impaired financing receivable, with related allowance, interest income, accrual method | 0 | 0 | 0 | 0
Impaired financing receivable, average recorded investment | 10,054 | 11,091 | 10,131 | 8,465
Impaired financing receivable, interest income, accrual method | 0 | 0 | 297 | 0
Agriculture Real Estate [Member] |  |  |  |
Impaired financing receivable, with no related allowance, average recorded investment | 602 | 1,966 | 990 | 1,202
Impaired financing receivable, with no related allowance, interest income, accrual method | 0 | 0 | 25 | 6
Impaired financing receivable, with related allowance, average recorded investment | 0 | 0 | 0 | 0
Impaired financing receivable, with related allowance, interest income, accrual method | 0 | 0 | 0 | 0
Impaired financing receivable, average recorded investment | 602 | 1,966 | 990 | 1,202
Impaired financing receivable, interest income, accrual method | 0 | 0 | 25 | 6
Commercial Portfolio Segment [Member] |  |  |  |
Impaired financing receivable, with no related allowance, average recorded investment | 255 | 735 | 400 | 586
Impaired financing receivable, with no related allowance, interest income, accrual method | 0 | 21 | 0 | 23
Impaired financing receivable, with related allowance, average recorded investment | 29 | 627 | 181 | 356
Impaired financing receivable, with related allowance, interest income, accrual method | 0 | 0 | 0 | 0
Impaired financing receivable, average recorded investment | 284 | 1,362 | 581 | 942
Impaired financing receivable, interest income, accrual method | 0 | 21 | 0 | 23
Agriculture [Member] |  |  |  |
Impaired financing receivable, with no related allowance, average recorded investment | 318 | 813 | 339 | 1,896
Impaired financing receivable, with no related allowance, interest income, accrual method | 0 | 340 | 14 | 340
Impaired financing receivable, with related allowance, average recorded investment | 327 | 531 | 385 | 380
Impaired financing receivable, with related allowance, interest income, accrual method | 0 | 0 | 0 | 0
Impaired financing receivable, average recorded investment | 645 | 1,344 | 724 | 2,276
Impaired financing receivable, interest income, accrual method | 0 | 340 | 14 | 340
Consumer and Other [Member] |  |  |  |
Impaired financing receivable, with no related allowance, average recorded investment | 6 | 8 | 6 | 26
Impaired financing receivable, with no related allowance, interest income, accrual method | 0 | 0 | 0 | 0
Impaired financing receivable, with related allowance, average recorded investment | 30 | 30 | 35 | 15
Impaired financing receivable, with related allowance, interest income, accrual method | 0 | 0 | 0 | 0
Impaired financing receivable, average recorded investment | 36 | 38 | 41 | 41
Impaired financing receivable, interest income, accrual method | $ 0 | $ 0 | $ 0 | $ 0

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