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Note 3 - Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Fair Value of Derivatives | [2] | $ (4,293) | [1] | $ (28,434)
Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Value of Derivatives | [2] |  |  |
Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair Value of Derivatives | [2] | (4,293) |  | (28,434)
Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair Value of Derivatives | [2] |  |  |
[1] | Includes derivative assets of $26 at December 31, 2016.
[2] | No cash collateral was provided by the Company at December 31, 2016 and 2015.

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- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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