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Note 9 - Derivative Instruments (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes To Financial Statements [Abstract] |
Schedule of Foreign Exchange Contracts, Statement of Financial Position | As of December 31, 2022 and 2021, we recorded the following balances for the fair value of the contracts (in millions):
|  | December 31, |
Balance sheet line item: |  | 2022 |  |  | 2021 |
Other current assets |  | $ | 1.1 |  |  | $ | 2.7 |
Other non-current assets |  |  | 0.4 |  |  |  | 2.5 |
Current derivative liabilities |  |  | 4.0 |  |  | — |
Non-current derivative liabilities |  |  | 3.6 |  |  |  | 0.0 |
Schedule of Notional Amounts of Outstanding Derivative Positions | The following tables summarize the quantities of metals committed under forward sales contracts at December 31, 2022 and 2021:
December 31, 2022 |  | Ounces/pounds under contract (in 000's) |  |  | Average price per ounce/pound |
|  | Silver |  |  | Gold |  |  | Zinc |  |  | Lead |  |  | Silver |  |  | Gold |  |  | Zinc |  |  | Lead |
|  | (ounces) |  |  | (ounces) |  |  | (pounds) |  |  | (pounds) |  |  | (ounces) |  |  | (ounces) |  |  | (pounds) |  |  | (pounds) |
Contracts on provisional sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 settlements |  |  | 3,124 |  |  |  | 8 |  |  |  | 18,629 |  |  |  | 11,960 |  |  | $ | 21.55 |  |  | $ | 1,795 |  |  | $ | 1.38 |  |  | $ | 0.98 |
Contracts on forecasted sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2023 settlements |  |  | — |  |  |  | — |  |  |  | 37,533 |  |  |  | 75,618 |  |  | N/A |  |  | N/A |  |  | $ | 1.34 |  |  | $ | 1.00 |
2024 settlements |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 45,856 |  |  | N/A |  |  | N/A |  |  | N/A |  |  | $ | 0.99 |
December 31, 2021 |  | Ounces/pounds under contract (in 000's) |  |  | Average price per ounce/pound |
|  | Silver |  |  | Gold |  |  | Zinc |  |  | Lead |  |  | Silver |  |  | Gold |  |  | Zinc |  |  | Lead |
|  | (ounces) |  |  | (ounces) |  |  | (pounds) |  |  | (pounds) |  |  | (ounces) |  |  | (ounces) |  |  | (pounds) |  |  | (pounds) |
Contracts on provisional sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2022 settlements |  |  | 1,814 |  |  |  | 6 |  |  |  | 13,371 |  |  |  | 4,575 |  |  | $ | 23.02 |  |  | $ | 1,812 |  |  | $ | 1.39 |  |  | $ | 0.96 |
Contracts on forecasted sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2022 settlements |  |  | — |  |  |  | — |  |  |  | 57,706 |  |  |  | 59,194 |  |  | N/A |  |  | N/A |  |  | $ | 1.28 |  |  | $ | 0.98 |
2023 settlements |  |  | — |  |  |  | — |  |  |  | 76,280 |  |  |  | 71,650 |  |  | N/A |  |  | N/A |  |  | $ | 1.29 |  |  | $ | 1.00 |
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location | At December 31, 2022 and 2021, we recorded the following balances for the fair value of forward and put option contracts held at that time (in millions):
|  | December 31, 2022 |  |  | December 31, 2021 |
Balance sheet line item: |  | Contracts in an asset position |  |  | Contracts in a liability position |  |  | Net asset (liability) |  |  | Contracts in an asset position |  |  | Contracts in a liability position |  |  | Net asset (liability) |
Other current assets |  | $ | 1.2 |  |  | $ | — |  |  | $ | 1.2 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Other non-current assets |  |  | 0.1 |  |  |  | — |  |  |  | 0.1 |  |  |  | — |  |  |  | — |  |  |  | — |
Current derivatives liability |  |  | 0.0 |  |  |  | (12.1 | ) |  |  | (12.1 | ) |  |  | 0.7 |  |  |  | (20.1 | ) |  |  | (19.4 | )
Non-current derivatives liability |  |  | 0.0 |  |  |  | (2.5 | ) |  |  | (2.5 | ) |  |  | 0.4 |  |  |  | (18.9 | ) |  |  | (18.5 | )

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