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Note 7 - Loans and Related Allowance for Loan Losses (Details) - Impaired Loans by Class - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | ---
With no related allowance recorded: |  |
Recorded investment, with no related allowance | $ 8,583 |
Unpaid principal balance, with no related allowance | 8,567 |
| 811 |
Recorded investment, with related allowance | 7,064 | $ 6,215
Unpaid principal balance, with related allowance | 7,053 | 6,199
Related allowance | 811 | 833
Total: |  |
Recorded investment | 15,647 | 13,681
Unpaid principal balance | 15,620 | 13,653
Related allowance | 811 | 833
Commercial Loans [Member] |  |
With no related allowance recorded: |  |
Recorded investment, with related allowance | 6,920 |
Unpaid principal balance, with related allowance | 6,906 |
Related allowance | 101 |
Total: |  |
Related allowance | 101 |
Commercial and Industrial [Member] |  |
With no related allowance recorded: |  |
Recorded investment, with no related allowance | 477 | 1,027
Unpaid principal balance, with no related allowance | 477 | 1,025
Recorded investment, with related allowance | 388 | 781
Unpaid principal balance, with related allowance | 388 | 781
Related allowance | 323 | 388
Total: |  |
Recorded investment | 865 | 1,808
Unpaid principal balance | 865 | 1,806
Related allowance | 323 | 388
Real Estate Construction Porfolio Segment [Member] |  |
With no related allowance recorded: |  |
Recorded investment, with no related allowance | 1,335 | 1,657
Unpaid principal balance, with no related allowance | 1,330 | 1,651
Recorded investment, with related allowance | 118 | 130
Unpaid principal balance, with related allowance | 118 | 130
Related allowance | 118 | 130
Total: |  |
Recorded investment | 1,453 | 1,787
Unpaid principal balance | 1,448 | 1,781
Related allowance | 118 | 130
Real Estate Construction Porfolio Segment [Member] | Residential Loan [Member] |  |
With no related allowance recorded: |  |
Recorded investment, with related allowance | 1,157 |
Unpaid principal balance, with related allowance | 1,155 |
Related allowance | 269 |
Total: |  |
Related allowance | 269 |
Real Estate Mortgage Portfolio Segment [Member] |  |
With no related allowance recorded: |  |
Recorded investment, with no related allowance |  | 7,466
Unpaid principal balance, with no related allowance |  | 7,454
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member] |  |
With no related allowance recorded: |  |
Recorded investment, with no related allowance | 2,928 | 2,445
Unpaid principal balance, with no related allowance | 2,926 | 2,443
Recorded investment, with related allowance |  | 1,436
Unpaid principal balance, with related allowance |  | 1,436
Related allowance | 269 | 276
Total: |  |
Recorded investment | 4,085 | 3,881
Unpaid principal balance | 4,081 | 3,879
Related allowance | 269 | 276
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member] |  |
With no related allowance recorded: |  |
Recorded investment, with no related allowance | 2,319 | 2,337
Unpaid principal balance, with no related allowance | 2,315 | 2,335
Recorded investment, with related allowance |  | 3,862
Unpaid principal balance, with related allowance |  | 3,846
Related allowance | 101 | 39
Total: |  |
Recorded investment | 9,239 | 6,199
Unpaid principal balance | 9,221 | 6,181
Related allowance | 101 | 39
Consumer Portfolio Segment [Member] |  |
With no related allowance recorded: |  |
Recorded investment, with related allowance | 5 | 6
Unpaid principal balance, with related allowance | 5 | 6
Related allowance |  | 0
Total: |  |
Recorded investment | 5 | 6
Unpaid principal balance | $ 5 | 6
Related allowance |  | $ 0

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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524 + Details
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