Note 10 - Fair Value Measurement (Details Textual) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended |
|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2026 |
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Orezone gold shares disposed | 32,878,400 | 32,878,400 |
| Realized gain on sale of orezone gold shares | $ 12.8 | $ 12.8 |
| X | ||||||||||
- Definition Orezone Gold Shares Disposed Received as Consideration No definition available.
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| X | ||||||||||
- Definition Amount of gain (loss) on sale or disposal of an equity method investment. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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