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Note 8 - Derivative Instruments (Details Textual) lb in Thousands, $ in Millions |  | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Aug. 15, 2024 USD ($) | Sep. 30, 2025 lb | Dec. 31, 2024 lb | Sep. 30, 2024 USD ($)
Nickel Swaps [Member] |  |  |  |
Derivative, Nonmonetary Notional Amount, Mass (Pound) | lb |  | 309 | 439 |
Forward Interest Rate Hedge [Member] |  |  |  |
Derivative, Term of Contract (Year) | 2 years |  |  |
Derivative, Notional Amount | $ | $ 75 |  |  | $ 75
Derivative, Fixed Interest Rate | 3.82% |  |  |

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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
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- Definition Nominal mass used to calculate payments on a derivative instrument. + References No definition available. + Details
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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 181 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-181 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A + Details
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- Definition Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Details
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- Details
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