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Note 6 - Other operating income and expenses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Other Operating Income [Abstract] |  |  |
Results from sundry assets | $ 7,127 | $ 10,529 | $ 10,960
Net rents | 4,188 | 4,417 | 4,702
Reclassification of currency translation adjustment reserve |  |  | 878
Bargain purchase gain |  | 2,212 | 3,162
Result on sale of Venezuela awards |  |  | 33,341
Other income | 12,474 | 43,492 |
Other operating income | 23,789 | 60,650 | 53,043
Other operating expenses |  |  |
Contributions to welfare projects and non-profit organizations | (17,445) | (17,657) | (15,538)
Allowance for doubtful receivables | (631) | (546) | (107)
Provision for the ongoing litigation related to the acquisition of participation in Usiminas | (14,414) | (107,215) |
Other expense |  |  | (1,628)
Other operating expenses | (32,490) | (125,418) | (17,273)
Other operating income and expenses, net | $ (8,701) | $ (64,768) | $ 35,770

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