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Note 3 - Business Segments and Sales of Products (Details Textual) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($)
Number of Reportable Segments |  |  | 5 |
Derivative, Gain (Loss) on Derivative, Net, Total |  |  | $ 13,937 | $ (4,483)
Financially-settled Forward Contracts [Member] |  |  |  |
Derivative, Gain (Loss) on Derivative, Net, Total | $ 5,000 | $ 9,600 | $ 4,500 | $ 12,900

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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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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