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Note 11 - Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statements of Income (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016
Net gain (loss) | [1],[2] | $ 166 | $ (2,142)
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] |  |  |
Net gain (loss) |  | 232 | (2,102)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] |  |  |
Net gain (loss) |  | $ (66) | $ (40)
[1] | Net gains and losses are recorded as part of "Net gain/loss from fair value adjustments" in the Consolidated Statements of Income.
[2] | The net gain (loss) presented in the above table does not include net losses of $0.5 million and net gains of $1.2 million for the three months ended March 31, 2017 and 2016, respectively, from the change in the fair value of financial assets and liabilities carried at fair value under the fair value option.

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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