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Note 7 - Loans Receivable and Credit Disclosures - Past Due Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financing receivable, recorded investment, past due |  | $ 4,173 | $ 5,292
Financing receivable, recorded investment, current |  | 1,135,788 | 1,142,285
Loans receivable |  | 1,139,961 | 1,147,577
Financing receivable, recorded investment, 90 days past due and still accruing |  | 5 | 39
Construction Real Estate [Member] |  |  |
Financing receivable, recorded investment, past due |  | 193 | 336
Financing receivable, recorded investment, current |  | 53,142 | 45,161
Loans receivable |  | 53,335 | 45,497
Financing receivable, recorded investment, 90 days past due and still accruing |  | 0 | 0
Family Residential Real Estate 1-4 [Member] |  |  |
Financing receivable, recorded investment, past due |  | 1,327 | 1,699
Financing receivable, recorded investment, current |  | 205,666 | 211,863
Loans receivable |  | 206,993 | 213,562
Financing receivable, recorded investment, 90 days past due and still accruing |  | 5 | 6
Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing receivable, recorded investment, past due |  | 117 | 208
Financing receivable, recorded investment, current |  | 497,038 | 496,149
Loans receivable |  | 497,155 | 496,357
Financing receivable, recorded investment, 90 days past due and still accruing |  | 0 | 0
Agriculture Real Estate [Member] |  |  |
Financing receivable, recorded investment, past due |  | 1,214 | 2,192
Financing receivable, recorded investment, current |  | 144,014 | 149,800
Loans receivable |  | 145,228 | 151,992
Financing receivable, recorded investment, 90 days past due and still accruing |  | 0 | 0
Commercial Portfolio Segment [Member] |  |  |
Financing receivable, recorded investment, past due |  | 755 | 286
Financing receivable, recorded investment, current |  | 126,685 | 122,249
Loans receivable | [1] | 127,440 | 122,535
Financing receivable, recorded investment, 90 days past due and still accruing |  | 0 | 3
Agriculture [Member] |  |  |
Financing receivable, recorded investment, past due |  | 540 | 537
Financing receivable, recorded investment, current |  | 95,351 | 102,049
Loans receivable |  | 95,891 | 102,586
Financing receivable, recorded investment, 90 days past due and still accruing |  | 0 | 30
Consumer and Other [Member] |  |  |
Financing receivable, recorded investment, past due |  | 27 | 34
Financing receivable, recorded investment, current |  | 13,892 | 15,014
Loans receivable |  | 13,919 | 15,048
Financing receivable, recorded investment, 90 days past due and still accruing |  | 0 | 0
Financing Receivables 30 to 89 Days Past Due [Member] |  |  |
Financing receivable, recorded investment, past due |  | 2,358 | 2,798
Financing Receivables 30 to 89 Days Past Due [Member] | Construction Real Estate [Member] |  |  |
Financing receivable, recorded investment, past due |  | 26 | 169
Financing Receivables 30 to 89 Days Past Due [Member] | Family Residential Real Estate 1-4 [Member] |  |  |
Financing receivable, recorded investment, past due |  | 1,223 | 1,523
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing receivable, recorded investment, past due |  | 117 | 152
Financing Receivables 30 to 89 Days Past Due [Member] | Agriculture Real Estate [Member] |  |  |
Financing receivable, recorded investment, past due |  | 622 | 574
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Financing receivable, recorded investment, past due |  | 203 | 283
Financing Receivables 30 to 89 Days Past Due [Member] | Agriculture [Member] |  |  |
Financing receivable, recorded investment, past due |  | 158 | 79
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer and Other [Member] |  |  |
Financing receivable, recorded investment, past due |  | 9 | 18
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing receivable, recorded investment, past due |  | 1,815 | 2,494
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction Real Estate [Member] |  |  |
Financing receivable, recorded investment, past due |  | 167 | 167
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Family Residential Real Estate 1-4 [Member] |  |  |
Financing receivable, recorded investment, past due |  | 104 | 176
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |
Financing receivable, recorded investment, past due |  | 0 | 56
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Agriculture Real Estate [Member] |  |  |
Financing receivable, recorded investment, past due |  | 592 | 1,618
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Financing receivable, recorded investment, past due |  | 552 | 3
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Agriculture [Member] |  |  |
Financing receivable, recorded investment, past due |  | 382 | 458
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer and Other [Member] |  |  |
Financing receivable, recorded investment, past due |  | $ 18 | $ 16
[1] | Commercial loan portfolio includes $59.2 million and $50.9 million of Paycheck Protection Program ("PPP") loans as of March 31, 2021 and December 31, 2020, respectively.

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