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Note 2 - Cost of sales - Components of Cost of Sales (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Note 2 - Cost of sales      
Inventories at the beginning of the year $ 3,921,097 $ 3,986,929 $ 2,672,593
Increase in inventory due to business combinations [1] 52,792 107,588
Plus: Charges of the year      
Raw materials, energy, consumables and other 4,638,681 5,277,507 5,772,031
Services and fees 408,478 437,804 293,490
Labor cost 1,454,924 1,403,546 1,160,085
Depreciation of property, plant and equipment 483,535 424,373 465,849
Amortization of intangible assets 12,193 11,582 11,754
Depreciation of right-of-use assets 34,332 30,352 33,244
Maintenance expenses 443,498 408,410 267,294
Allowance for obsolescence 41,240 13,581 24,901
Taxes 124,500 272,120 194,736
Other 230,161 216,220 178,691
Cost of sales including discontinued operations 7,924,334 8,603,083 8,402,075
Less: Inventories at the end of the year (3,709,942) (3,921,097) (3,986,929)
Cost of sales $ 8,135,489 $ 8,668,915 $ 7,087,739
[1] For the year 2024, related to Mattr’s pipe coating business unit acquisition. For more information see note 34.