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Note 8 - Loans Receivable and Credit Disclosures - Past Due Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing receivable, recorded investment, past due | $ 11,511 | $ 7,866
Financing receivable, recorded investment, current | 1,083,140 | 1,052,980
Loans receivable | 1,094,651 | 1,060,846
Financing receivable, recorded investment, 90 days past due and still accruing | 838 | 255
Construction Real Estate [Member] |  |
Financing receivable, recorded investment, past due | 410 | 1,796
Financing receivable, recorded investment, current | 49,358 | 46,099
Loans receivable | 49,768 | 47,895
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 | 1,289 | 1,101
Financing receivable, recorded investment, current | 203,502 | 200,409
Loans receivable | 204,791 | 201,510
Financing receivable, recorded investment, 90 days past due and still accruing | 122 | 188
Commercial Real Estate Portfolio Segment [Member] |  |
Financing receivable, recorded investment, past due | 266 | 387
Financing receivable, recorded investment, current | 461,239 | 435,463
Loans receivable | 461,505 | 435,850
Financing receivable, recorded investment, 90 days past due and still accruing | 0 | 0
Agriculture Real Estate [Member] |  |
Financing receivable, recorded investment, past due | 2,872 | 422
Financing receivable, recorded investment, current | 159,112 | 160,349
Loans receivable | 161,984 | 160,771
Financing receivable, recorded investment, 90 days past due and still accruing | 682 | 0
Commercial Portfolio Segment [Member] |  |
Financing receivable, recorded investment, past due | 1,950 | 755
Financing receivable, recorded investment, current | 83,793 | 83,329
Loans receivable | 85,743 | 84,084
Financing receivable, recorded investment, 90 days past due and still accruing | 0 | 0
Agriculture [Member] |  |
Financing receivable, recorded investment, past due | 4,643 | 3,253
Financing receivable, recorded investment, current | 107,763 | 108,692
Loans receivable | 112,406 | 111,945
Financing receivable, recorded investment, 90 days past due and still accruing | 30 | 62
Consumer and Other [Member] |  |
Financing receivable, recorded investment, past due | 81 | 152
Financing receivable, recorded investment, current | 18,373 | 18,639
Loans receivable | 18,454 | 18,791
Financing receivable, recorded investment, 90 days past due and still accruing | 4 | 5
Financing Receivables 30 to 89 Days Past Due [Member] |  |
Financing receivable, recorded investment, past due | 6,048 | 4,746
Financing Receivables 30 to 89 Days Past Due [Member] | Construction Real Estate [Member] |  |
Financing receivable, recorded investment, past due | 410 | 1,796
Financing Receivables 30 to 89 Days Past Due [Member] | Family Residential Real Estate 1-4 [Member] |  |
Financing receivable, recorded investment, past due | 1,009 | 811
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Financing receivable, recorded investment, past due | 83 | 387
Financing Receivables 30 to 89 Days Past Due [Member] | Agriculture Real Estate [Member] |  |
Financing receivable, recorded investment, past due | 1,474 | 422
Financing Receivables 30 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |
Financing receivable, recorded investment, past due | 1,469 | 518
Financing Receivables 30 to 89 Days Past Due [Member] | Agriculture [Member] |  |
Financing receivable, recorded investment, past due | 1,545 | 666
Financing Receivables 30 to 89 Days Past Due [Member] | Consumer and Other [Member] |  |
Financing receivable, recorded investment, past due | 58 | 146
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Financing receivable, recorded investment, past due | 5,463 | 3,120
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction Real Estate [Member] |  |
Financing receivable, recorded investment, past due | 0 | 0
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 | 280 | 290
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Financing receivable, recorded investment, past due | 183 |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Agriculture Real Estate [Member] |  |
Financing receivable, recorded investment, past due | 1,398 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |
Financing receivable, recorded investment, past due | 481 | 237
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Agriculture [Member] |  |
Financing receivable, recorded investment, past due | 3,098 | 2,587
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer and Other [Member] |  |
Financing receivable, recorded investment, past due | $ 23 | $ 6

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