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Note 7 - Equity Investment (Details Textual) - Sisecam Wyoming [Member] - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Equity Method Investment, Ownership Percentage | 49.00% |  | 49.00% |
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) | $ 0.9 | $ (1.2) | $ (17.4) | $ (5.7)

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- Definition Represents reclassification out of accumulated other comprehensive income (loss) + References No definition available. + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481687/323-10-50-3 + Details
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- Details
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