Note 16 - Properties, Plants, Equipment and Mine Development, net, and Lease Commitments (Details textual) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Financing Receivable, Past Due [Line Items] | ||
| Capital additions (excluding non-cash items) | $ 190.9 | |
| Lucky Friday [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Capital additions (excluding non-cash items) | 72.9 | |
| Greens Creek [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Capital additions (excluding non-cash items) | 54.6 | |
| Mining Assets, Value Beyond Proven and Probable Reserves (VBPP) | 69.7 | $ 83.3 |
| Nevada Operations [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Mining Assets, Value Beyond Proven and Probable Reserves (VBPP) | 388.2 | 388.2 |
| Keno Hill [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Capital additions (excluding non-cash items) | 58.2 | |
| Mining Assets, Value Beyond Proven and Probable Reserves (VBPP) | $ 83.0 | $ 95.7 |
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- Definition The economic value of the estimated cash flows of a mining asset beyond that asset's proven and probable reserves. No definition available.
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- 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/2009/role/commonPracticeRef
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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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