Financial risk management (Details Narrative) - USD ($) $ / shares in Units, $ in Millions |
9 Months Ended | ||
|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Dec. 31, 2024 |
|
| Statement [Line Items] | |||
| Trade receivables | $ 0.7 | $ 0.4 | |
| Gain amount | 3.6 | $ 0.6 | |
| Silver contract liability | 2.9 | 1.8 | |
| Metals contract liability | 4.5 | 4.1 | |
| Gain from settled non-hedge contracts | 0.3 | ||
| Gain from unsettled non-hedge contracts | 2.6 | ||
| Net asset of derivative instruments valued | $ 2.9 | ||
| Top of range [member] | |||
| Statement [Line Items] | |||
| Estimated value percentage | 100.00% | ||
| Bottom of range [member] | |||
| Statement [Line Items] | |||
| Estimated value percentage | 85.00% | ||
| Silver [Member] | |||
| Statement [Line Items] | |||
| Options description | Silver put options for 60,000 ounces per month from July 2025 to June 2026 at a strike price of $29 per ounce valued at total cost of $0.3 million at inception | ||
| Zinc [Member] | |||
| Statement [Line Items] | |||
| Forward options description | Zinc forward options to sell approximately 200,000 pounds per month from August 2025 to December 2025 at $1.27 per pound | ||
| Lead [Member] | |||
| Statement [Line Items] | |||
| Forward options description | Lead forward options to sell approximately 500,000 pounds per month from August 2025 to January 2026 at $0.91 per pound | ||
| Copper [Member] | |||
| Statement [Line Items] | |||
| Forward options description | Copper forward options to sell approximately 100,000 to 250,000 pounds per month from August 2025 to July 2026 at $4.39 per pound | ||
| Gold [Member] | |||
| Statement [Line Items] | |||
| Options description | Gold forward options to buy 1,275 ounces every three months from September 2025 to June 2026 at prices between $3,375 and $3,541 per ounce | ||
| Call options description | Gold call options to buy 1,259 to 1,275 ounces every three months from September 2026 to December 2027 at a strike price of $3,500 per ounce valued at total cost of $3.4 million at inception | ||
| U.S. SOFR One [Member] | |||
| Statement [Line Items] | |||
| Interest rate risk | 6.00% | ||
| U.S. SOFR Two [Member] | |||
| Statement [Line Items] | |||
| Interest rate risk | 6.00% | ||
| Credit Risk [Member] | Trade and Other Receivables [Member] | |||
| Statement [Line Items] | |||
| Risk exposure associated with instrument | $ 6.8 | $ 3.6 | |
| U.S. LIBOR [Member] | |||
| Statement [Line Items] | |||
| Interest rate risk | 7.20% | ||
| U.S. SOFR [Member] | |||
| Statement [Line Items] | |||
| Interest rate risk | 4.75% | ||
| CAD/USD Exchange rate [Member] | |||
| Statement [Line Items] | |||
| Exchange rates | $ 1.39 | ||
| MXN/USD Exchange rate [Member] | |||
| Statement [Line Items] | |||
| Exchange rates | $ 18.38 | ||