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Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) - Additional Information on Impaired Loans - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Total: |  |  |  |
Average recorded investment | $ 13,504 | $ 15,929 | $ 13,358 | $ 16,760
Interest income recognized | 163 | 205 | 495 | 595
Commercial and Industrial [Member] |  |  |  |
Total: |  |  |  |
Average recorded investment | 1,480 | 1,842 | 1,354 | 2,107
Interest income recognized | 21 | 22 | 73 | 71
Real Estate Construction Porfolio Segment [Member] |  |  |  |
Total: |  |  |  |
Average recorded investment | 2,347 | 3,556 | 2,614 | 3,644
Interest income recognized | 28 | 38 | 94 | 119
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member] |  |  |  |
Total: |  |  |  |
Average recorded investment | 4,195 | 5,328 | 4,514 | 5,319
Interest income recognized | 43 | 62 | 128 | 164
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member] |  |  |  |
Total: |  |  |  |
Average recorded investment | 5,476 | 5,192 | 4,871 | 5,678
Interest income recognized | 71 | 83 | 200 | 241
Consumer Portfolio Segment [Member] |  |  |  |
Total: |  |  |  |
Average recorded investment | $ 6 | $ 11 | $ 6 | $ 12

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- Definition Average 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 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5258-111524 + Details
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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524 + Details
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