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Note 4 - Loans - Age Analysis of Past Due Loans and Nonaccrual Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018
--- | --- | --- | ---
Accruing loans past due | $ 3,996 | $ 8,234 |
Nonaccrual loans | 7,541 | 9,482 |
Current loans | 768,454 | 764,311 |
Loans | 779,991 | 782,027 | $ 768,497
Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 3,996 | 8,234 |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Commercial and Agricultural Portfolio Segment [Member] | Commercial [Member] |  |  |
Accruing loans past due | 106 | 282 |
Nonaccrual loans | 537 | 637 |
Current loans | 50,725 | 56,491 |
Loans | 51,368 | 57,410 | 46,693
Commercial and Agricultural Portfolio Segment [Member] | Commercial [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 106 | 282 |
Commercial and Agricultural Portfolio Segment [Member] | Commercial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Commercial and Agricultural Portfolio Segment [Member] | Agricultural [Member] |  |  |
Accruing loans past due | 22 | 117 |
Nonaccrual loans | 504 | 413 |
Current loans | 14,764 | 16,269 |
Loans | 15,290 | 16,799 | 16,351
Commercial and Agricultural Portfolio Segment [Member] | Agricultural [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 22 | 117 |
Commercial and Agricultural Portfolio Segment [Member] | Agricultural [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Real Estate Portfolio Segment [Member] | Commercial [Member] |  |  |
Accruing loans past due | 228 | 679 |
Nonaccrual loans | 1,740 | 2,966 |
Current loans | 371,295 | 369,889 |
Loans | 373,263 | 373,534 | 354,098
Real Estate Portfolio Segment [Member] | Commercial [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 228 | 679 |
Real Estate Portfolio Segment [Member] | Commercial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Real Estate Portfolio Segment [Member] | Commercial Construction [Member] |  |  |
Accruing loans past due | 22 | 88 |
Nonaccrual loans | 40 | 463 |
Current loans | 44,243 | 47,298 |
Loans | 44,305 | 47,849 | 49,659
Real Estate Portfolio Segment [Member] | Commercial Construction [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 22 | 88 |
Real Estate Portfolio Segment [Member] | Commercial Construction [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Real Estate Portfolio Segment [Member] | Residential Construction [Member] |  |  |
Accruing loans past due |  |  |
Nonaccrual loans |  |  |
Current loans | 14,947 | 12,500 |
Loans | 14,947 | 12,500 | 8,145
Real Estate Portfolio Segment [Member] | Residential Construction [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Real Estate Portfolio Segment [Member] | Residential Construction [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Real Estate Portfolio Segment [Member] | Residential [Member] |  |  |
Accruing loans past due | 2,546 | 6,882 |
Nonaccrual loans | 2,569 | 2,734 |
Current loans | 175,889 | 178,098 |
Loans | 181,004 | 187,714 | 193,376
Real Estate Portfolio Segment [Member] | Residential [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 2,546 | 6,882 |
Real Estate Portfolio Segment [Member] | Residential [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Real Estate Portfolio Segment [Member] | Farmland [Member] |  |  |
Accruing loans past due | 929 | 76 |
Nonaccrual loans | 2,015 | 2,052 |
Current loans | 61,112 | 60,581 |
Loans | 64,056 | 62,709 | 67,111
Real Estate Portfolio Segment [Member] | Farmland [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 929 | 76 |
Real Estate Portfolio Segment [Member] | Farmland [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Consumer and Other Portfolio Segment [Member] | Consumer [Member] |  |  |
Accruing loans past due | 143 | 110 |
Nonaccrual loans | 133 | 213 |
Current loans | 17,631 | 18,162 |
Loans | 17,907 | 18,485 | 18,805
Consumer and Other Portfolio Segment [Member] | Consumer [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 143 | 110 |
Consumer and Other Portfolio Segment [Member] | Consumer [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Consumer and Other Portfolio Segment [Member] | Other [Member] |  |  |
Accruing loans past due |  |  |
Nonaccrual loans | 3 | 4 |
Current loans | 17,848 | 5,023 |
Loans | 17,851 | 5,027 | $ 14,259
Consumer and Other Portfolio Segment [Member] | Other [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |
Consumer and Other Portfolio Segment [Member] | Other [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  |  |

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