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Note 8 - Equity in earnings of non-consolidated companies (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disclosure of Equity in Earnings of Nonconsolidated Companies [Line Items] |  |  |
Remeasurement of previously held interest |  |  |
Bargain purchase gain |  | 2,212 | $ 3,162
Usiminas |  |  |
Disclosure of Equity in Earnings of Nonconsolidated Companies [Line Items] |  |  |
Loss related to provision for the ongoing litigation related to the acquisition of participation in Usiminas | $ (12,400) | (43,300) |
Global Pipe Company |  |  |
Disclosure of Equity in Earnings of Nonconsolidated Companies [Line Items] |  |  |
Remeasurement of previously held interest |  |  | 4,506
Bargain purchase gain |  |  | $ 11,487

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- Definition The gain (loss) recognised as result of remeasuring to fair value the equity interest in the acquiree held by the acquirer before the business combination. [Refer: Total for all business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2025-01-01 -Paragraph B64 -Subparagraph p -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_p_ii&doctype=Appendix&subtype=B -URIDate 2025-03-27 + Details
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2025-01-01 -Paragraph B64 -Subparagraph n -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B64_n_i&doctype=Appendix&subtype=B -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 35 -Subparagraph i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_i&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 35 -Subparagraph i -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_35_i&doctype=Standard -URIDate 2025-03-27 + Details
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