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Note 7 - Loans Receivable and Credit Disclosures - Impaired Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Impaired financing receivable with no related allowance, recorded investment | $ 2,284 | $ 3,148
Impaired financing receivable with no related allowance, unpaid principal balance | 2,656 | 3,788
Impaired financing receivable with related allowance, recorded investment | 10,412 | 12,125
Impaired financing receivable with related allowance, unpaid principal balance | 10,559 | 13,205
Impaired financing receivable, related allowance | 1,661 | 1,819
Impaired financing receivable, recorded investment | 12,696 | 15,273
Impaired financing receivable, unpaid principal balance | 13,215 | 16,993
Construction Real Estate [Member] |  |
Impaired financing receivable with no related allowance, recorded investment | 0 | 167
Impaired financing receivable with no related allowance, unpaid principal balance | 0 | 167
Impaired financing receivable with related allowance, recorded investment | 0 | 0
Impaired financing receivable with related allowance, unpaid principal balance | 0 | 0
Impaired financing receivable, related allowance | 0 | 0
Impaired financing receivable, recorded investment | 0 | 167
Impaired financing receivable, unpaid principal balance | 0 | 167
Family Residential Real Estate 1-4 [Member] |  |
Impaired financing receivable with no related allowance, recorded investment | 932 | 416
Impaired financing receivable with no related allowance, unpaid principal balance | 995 | 475
Impaired financing receivable with related allowance, recorded investment | 21 | 924
Impaired financing receivable with related allowance, unpaid principal balance | 21 | 1,278
Impaired financing receivable, related allowance | 15 | 150
Impaired financing receivable, recorded investment | 953 | 1,340
Impaired financing receivable, unpaid principal balance | 1,016 | 1,753
Commercial Real Estate Portfolio Segment [Member] |  |
Impaired financing receivable with no related allowance, recorded investment | 137 | 242
Impaired financing receivable with no related allowance, unpaid principal balance | 167 | 578
Impaired financing receivable with related allowance, recorded investment | 10,016 | 10,016
Impaired financing receivable with related allowance, unpaid principal balance | 10,157 | 10,157
Impaired financing receivable, related allowance | 1,486 | 1,486
Impaired financing receivable, recorded investment | 10,153 | 10,258
Impaired financing receivable, unpaid principal balance | 10,324 | 10,735
Agriculture Real Estate [Member] |  |
Impaired financing receivable with no related allowance, recorded investment | 628 | 1,664
Impaired financing receivable with no related allowance, unpaid principal balance | 684 | 1,698
Impaired financing receivable with related allowance, recorded investment | 0 | 0
Impaired financing receivable with related allowance, unpaid principal balance | 0 | 0
Impaired financing receivable, related allowance | 0 | 0
Impaired financing receivable, recorded investment | 628 | 1,664
Impaired financing receivable, unpaid principal balance | 684 | 1,698
Commercial Portfolio Segment [Member] |  |
Impaired financing receivable with no related allowance, recorded investment | 271 | 274
Impaired financing receivable with no related allowance, unpaid principal balance | 302 | 318
Impaired financing receivable with related allowance, recorded investment | 0 | 666
Impaired financing receivable with related allowance, unpaid principal balance | 0 | 1,247
Impaired financing receivable, related allowance | 0 | 115
Impaired financing receivable, recorded investment | 271 | 940
Impaired financing receivable, unpaid principal balance | 302 | 1,565
Agriculture [Member] |  |
Impaired financing receivable with no related allowance, recorded investment | 312 | 377
Impaired financing receivable with no related allowance, unpaid principal balance | 504 | 542
Impaired financing receivable with related allowance, recorded investment | 338 | 482
Impaired financing receivable with related allowance, unpaid principal balance | 342 | 484
Impaired financing receivable, related allowance | 132 | 40
Impaired financing receivable, recorded investment | 650 | 859
Impaired financing receivable, unpaid principal balance | 846 | 1,026
Consumer and Other [Member] |  |
Impaired financing receivable with no related allowance, recorded investment | 4 | 8
Impaired financing receivable with no related allowance, unpaid principal balance | 4 | 10
Impaired financing receivable with related allowance, recorded investment | 37 | 37
Impaired financing receivable with related allowance, unpaid principal balance | 39 | 39
Impaired financing receivable, related allowance | 28 | 28
Impaired financing receivable, recorded investment | 41 | 45
Impaired financing receivable, unpaid principal balance | $ 43 | $ 49

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