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Note 3 - Age Analysis of Past Due Loans and Nonaccrual Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015 | Jun. 30, 2015
--- | --- | --- | ---
Commercial and Agricultural Portfolio Segment [Member] | Commercial [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | $ 320 | $ 491 |
Commercial and Agricultural Portfolio Segment [Member] | Commercial [Member] |  |  |
Accruing loans past due | 320 | 491 |
Nonaccrual loans | 461 | 577 |
Current loans | 47,153 | 46,714 |
Loans and Leases Receivable, Gross | 47,934 | 47,782 | $ 52,506
Commercial and Agricultural Portfolio Segment [Member] | Agricultural [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 104 | 71 |
Commercial and Agricultural Portfolio Segment [Member] | Agricultural [Member] |  |  |
Accruing loans past due | 104 | 71 |
Nonaccrual loans | 192 | 178 |
Current loans | 24,011 | 18,944 |
Loans and Leases Receivable, Gross | 24,307 | 19,193 | 24,019
Real Estate Portfolio Segment [Member] | Commercial [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 1,452 | 6,031 |
Real Estate Portfolio Segment [Member] | Commercial [Member] |  |  |
Accruing loans past due | 1,452 | 6,031 |
Nonaccrual loans | 7,678 | 7,565 |
Current loans | 336,051 | 332,666 |
Loans and Leases Receivable, Gross | 345,181 | 346,262 | 341,167
Real Estate Portfolio Segment [Member] | Commercial Construction [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 148 | 90 |
Real Estate Portfolio Segment [Member] | Commercial Construction [Member] |  |  |
Accruing loans past due | 148 | 90 |
Nonaccrual loans | 190 | 1,643 |
Current loans | 31,954 | 38,374 |
Loans and Leases Receivable, Gross | 32,292 | 40,107 | 46,699
Real Estate Portfolio Segment [Member] | Residential Construction [Member] |  |  |
Current loans | 9,141 | 9,413 |
Loans and Leases Receivable, Gross | 9,141 | 9,413 | 11,327
Real Estate Portfolio Segment [Member] | Residential [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 3,123 | 3,683 |
Real Estate Portfolio Segment [Member] | Residential [Member] |  |  |
Accruing loans past due | 3,123 | 3,683 |
Nonaccrual loans | 3,455 | 3,164 |
Current loans | 189,562 | 190,155 |
Loans and Leases Receivable, Gross | 196,140 | 197,002 | 202,805
Real Estate Portfolio Segment [Member] | Farmland [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 220 | 123 |
Real Estate Portfolio Segment [Member] | Farmland [Member] |  |  |
Accruing loans past due | 220 | 123 |
Nonaccrual loans | 933 | 1,103 |
Current loans | 68,984 | 60,554 |
Loans and Leases Receivable, Gross | 70,137 | 61,780 | 54,135
Consumer and Other Portfolio Segment [Member] | Consumer [Member] | Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 244 | 470 |
Consumer and Other Portfolio Segment [Member] | Consumer [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  | 8 |
Consumer and Other Portfolio Segment [Member] | Consumer [Member] |  |  |
Accruing loans past due | 244 | 478 |
Nonaccrual loans | 240 | 178 |
Current loans | 19,452 | 19,949 |
Loans and Leases Receivable, Gross | 19,936 | 20,605 | 21,371
Consumer and Other Portfolio Segment [Member] | Other [Member] |  |  |
Current loans | 19,141 | 16,492 |
Loans and Leases Receivable, Gross | 19,141 | 16,492 | 6,049
Financing Receivables, 30-89 Days Past Due [Member] |  |  |
Accruing loans past due | 5,611 | 10,959 |
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |  |
Accruing loans past due |  | 8 |
Accruing loans past due | 5,611 | 10,967 |
Nonaccrual loans | 13,149 | 14,408 |
Current loans | 745,449 | 733,261 |
Loans and Leases Receivable, Gross | $ 764,209 | $ 758,636 | $ 760,078

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