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Note 6 - Stockholders' Equity (Tables) | 3 Months Ended
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Mar. 31, 2024
Table Text Block [Abstract] |
Summary of Dividends Declared Pursuant to Dividend Policy | The following table summarizes the dividends our Board of Directors have declared and we have paid during 2024 pursuant to our dividend policy:
Quarter |  | Prior Quarter Realized Silver Price |  | Silver-linked component |  | Minimum component |  | Total dividend per share
First 2024 |  | 23.47 |  | $0.0025 |  | $0.00375 |  | $0.00625
First 2023 |  | 22.03 |  | $0.0025 |  | $0.00375 |  | $0.00625
Schedule of Accumulated other comprehensive income (loss) | The following table lists the beginning balance, quarterly activity and ending balances, net of income and mining tax, of each component of “Accumulated other comprehensive income (loss), net” (in thousands):
|  | Changes in fair value of derivative contracts designated as hedge transactions |  |  | Adjustments For Pension Plans |  |  | Total Accumulated Other Comprehensive Income (Loss), Net |
Balance January 1, 2024 |  | $ | 13,708 |  |  | $ | (7,871 | ) |  |  | 5,837 |
Change in fair value of derivative contracts |  |  | (6,835 | ) |  |  | — |  |  |  | (6,835 | )
Gains and deferred gains transferred from accumulated other comprehensive income |  |  | 1,432 |  |  |  | — |  |  |  | 1,432 |
Balance March 31, 2024 |  | $ | 8,305 |  |  | $ | (7,871 | ) |  | $ | 434 |
Balance January 1, 2023 |  | $ | 9,162 |  |  | $ | (6,714 | ) |  | $ | 2,448 |
Changes in fair value of derivative contracts |  | $ | 8,665 |  |  |  | — |  |  | $ | 8,665 |
Gains and deferred gains transferred from accumulated other comprehensive income |  | $ | (2,149 | ) |  |  | — |  |  | $ | (2,149 | )
Balance March 31, 2023 |  | $ | 15,678 |  |  | $ | (6,714 | ) |  | $ | 8,964 |

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