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Note 8 - Loans - Average Balance and Interest Income Recognized Related to Impaired Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Impaired Loans Average Recorded Investment | $ 133,809 | $ 137,595 | $ 129,741 | $ 127,958
Impaired Loans Interest Income Recognized | 1,224 | 994 | 2,275 | 1,976
Commercial Portfolio Segment [Member] |  |  |  |
Impaired Loans Average Recorded Investment | 46,763 | 19,376 | 45,978 | 21,345
Impaired Loans Interest Income Recognized | 498 | 86 | 825 | 171
Real Estate Construction Portfolio Segment [Member] |  |  |  |
Impaired Loans Average Recorded Investment | 8,378 | 42,752 | 8,258 | 29,912
Impaired Loans Interest Income Recognized |  | 356 |  | 696
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Impaired Loans Average Recorded Investment | 64,004 | 60,295 | 61,316 | 60,847
Impaired Loans Interest Income Recognized | 633 | 445 | 1,264 | 898
Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |  |  |
Impaired Loans Average Recorded Investment | 14,664 | 15,172 | 14,189 | 15,854
Impaired Loans Interest Income Recognized | $ 93 | $ 107 | $ 186 | $ 211

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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://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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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