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Note 6 - Stockholders' Equity (Tables) | 9 Months Ended
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Sep. 30, 2025
Table Text Block [Abstract] |
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award | The following table summarizes the stock-based compensation grants awarded during the nine months ended September 30, 2025:
Grant date |  | Award type |  | Number granted |  | Grant date fair value per share
January 15, 2025 |  | Restricted stock |  | 325,016 |  | 5.41
March 24, 2025 |  | Restricted stock |  | 23,826 |  | 5.87
June 23, 2025 |  | Restricted stock |  | 1,613,885 |  | 5.82
June 23, 2025 |  | Performance based |  | 840,205 |  | 0.06
July 15, 2025 |  | Restricted stock |  | 49,100 |  | 6.11
September 4, 2025 |  | Restricted stock |  | 8,475 |  | 8.85
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, 2025 |  | $ | 5,994 |  |  | $ | (16,260 | ) |  | $ | (10,266 | )
Change in fair value of derivative contracts |  |  | 2,787 |  |  |  | — |  |  |  | 2,787 |
Gains and deferred gains transferred from accumulated other comprehensive income |  |  | (353 | ) |  |  | — |  |  |  | (353 | )
Balance March 31, 2025 |  | $ | 8,428 |  |  | $ | (16,260 | ) |  | $ | (7,832 | )
Changes in fair value of derivative contracts |  |  | 5,748 |  |  |  | — |  |  |  | 5,748 |
Gains and deferred gains transferred from accumulated other comprehensive income |  |  | (2,495 | ) |  |  | — |  |  |  | (2,495 | )
Balance June 30, 2025 |  | $ | 11,681 |  |  | $ | (16,260 | ) |  | $ | (4,579 | )
Changes in fair value of derivative contracts |  |  | 78 |  |  |  | — |  |  |  | 78 |
Gains and deferred gains transferred from accumulated other comprehensive income |  |  | (4,475 | ) |  |  | — |  |  |  | (4,475 | )
Balance September 30, 2025 |  | $ | 7,284 |  |  | $ | (16,260 | ) |  | $ | (8,976 | )
Balance January 1, 2024 |  | $ | 13,708 |  |  | $ | (7,871 | ) |  | $ | 5,837 |
Changes in fair value of derivative contracts |  |  | (3,971 | ) |  |  | — |  |  |  | (3,971 | )
Gains and deferred gains transferred from accumulated other comprehensive income |  |  | (1,432 | ) |  |  | — |  |  |  | (1,432 | )
Balance March 31, 2024 |  | $ | 8,305 |  |  | $ | (7,871 | ) |  | $ | 434 |
Changes in fair value of derivative contracts |  |  | (4,545 | ) |  |  | — |  |  |  | (4,545 | )
Gains and deferred gains transferred from accumulated other comprehensive income |  |  | (1,943 | ) |  |  | — |  |  |  | (1,943 | )
Balance June 30, 2024 |  | $ | 1,817 |  |  | $ | (7,871 | ) |  | $ | (6,054 | )
Changes in fair value of derivative contracts |  |  | 3,872 |  |  |  | — |  |  |  | 3,872 |
Gains and deferred gains transferred from accumulated other comprehensive income |  |  | (701 | ) |  |  |  |  |  | (701 | )
Balance September 30, 2024 |  | $ | 4,988 |  |  | $ | (7,871 | ) |  | $ | (2,883 | )

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