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 | ||