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Note 8 - Loans - Average Balance and Interest Income Recognized Related to Impaired Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Average Recorded Investment | $ 127,259 | $ 133,221 | $ 127,722 | $ 134,519
Interest Income Recognized | 1,264 | 1,160 | 2,349 | 3,209
Commercial Portfolio Segment [Member] |  |  |  |
Average Recorded Investment | 24,987 | 28,091 | 22,572 | 18,602
Interest Income Recognized | 678 | 170 | 760 | 488
Real Estate Construction Portfolio Segment [Member] |  |  |  |
Average Recorded Investment | 29,780 | 5,869 | 29,868 | 12,005
Interest Income Recognized | 99 | 66 | 287 | 196
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Average Recorded Investment | 58,555 | 81,005 | 60,074 | 86,456
Interest Income Recognized | 391 | 776 | 1,015 | 2,124
Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |  |  |
Average Recorded Investment | 13,937 | 18,256 | 15,208 | 17,456
Interest Income Recognized | $ 96 | $ 148 | $ 287 | $ 401

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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=84173941&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=84173941&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=84173941&loc=d3e5212-111524 + Details
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