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Note 2 - Cost of sales - Components of Cost of Sales (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Note 2 - Cost of sales      
Inventories at the beginning of the year $ 3,986,929 $ 2,672,593 $ 1,636,673
Increase in inventory due to business combinations [1] 107,588
Decrease in inventory due to sale of subsidiaries (10,662)
Plus: Charges of the year      
Raw materials, energy, consumables and other 5,277,507 5,772,031 3,841,551
Services and fees 437,804 293,490 208,472
Labor cost 1,403,546 1,160,085 824,071
Depreciation of property, plant and equipment 424,373 465,849 448,843
Amortization of intangible assets 11,582 11,754 7,645
Depreciation of right-of-use assets 30,352 33,244 35,910
Maintenance expenses 408,410 267,294 129,350
Allowance for obsolescence 13,581 24,901 23,296
Taxes 272,120 194,736 40,887
Other 216,220 178,691 98,159
Cost of sales including discontinued operations 8,603,083 8,402,075 5,647,522
Less: Inventories at the end of the year (3,921,097) (3,986,929) (2,672,593)
Cost of sales $ 8,668,915 $ 7,087,739 $ 4,611,602
[1] Related to the GPC, Isoplus anticorrosion coating division and Mattr’s pipe coating business unit acquisitions. For more information see note 34.