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Note 6 - Stockholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2023
Table Text Block [Abstract] |
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award | The following table summarizes the grants awarded during the six months ended June 30, 2023:
Grant date |  | Award type |  | Number granted |  | Grant date fair value per share
June 21, 2023 |  | Restricted stock |  | 1,230,223 |  | $5.05
June 21, 2023 |  | Performance based |  | 314,778 |  | $3.54
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 2023 pursuant to our dividend policy:
Quarter |  | Prior Quarter Realized Silver Price |  | Silver-linked component |  | Minimum component |  | Total dividend per share
First |  | 22.03 |  | $0.0025 |  | $0.00375 |  | $0.00625
Second |  | 22.62 |  | $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, 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 |
Changes in fair value of derivative contracts |  |  | 7,445 |  |  |  | — |  |  |  | 7,445 |
Gains and deferred gains transferred from accumulated other comprehensive income |  |  | (2,213 | ) |  |  | — |  |  |  | (2,213 | )
Balance June 30, 2023 |  | $ | 20,910 |  |  | $ | (6,714 | ) |  | $ | 14,196 |
|  | 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, 2022 |  | $ | (4,675 | ) |  | $ | (23,781 | ) |  |  | (28,456 | )
Changes in fair value of derivative contracts |  |  | (31,798 | ) |  |  | — |  |  |  | (31,798 | )
Gains transferred from accumulated other comprehensive income |  |  | (1,367 | ) |  |  | — |  |  |  | (1,367 | )
Balance March 31, 2022 |  |  | (37,840 | ) |  |  | (23,781 | ) |  |  | (61,621 | )
Changes in fair value of derivative contracts |  |  | 61,939 |  |  |  | — |  |  |  | 61,939 |
Gains transferred from accumulated other comprehensive income |  |  | 3,409 |  |  |  | — |  |  |  | 3,409 |
Balance June 30, 2022 |  | $ | 27,508 |  |  | $ | (23,781 | ) |  | $ | 3,727 |

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