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Note 7 - Equity Investment (Details Textual) - Sisecam Wyoming [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Equity Method Investment, Ownership Percentage	49.00%		49.00%
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ 1.3	$ 1.6

X

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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-Topic 825
-SubTopic 10
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X

- Definition

Amount after tax of reclassification adjustments of other comprehensive income (loss).

+ References

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