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Cost of goods sold (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of attribution of expenses by nature to their function [line items]      
Material and other inventory costs $ 539,006 $ 569,794 $ 516,377
Inventory change (27,408) (9,278) (10,990)
Energy and Fuel Costs 96,346 104,619 122,012
Depreciation, depletion, and amortization 99,941 91,079 87,728
Freight expense 49,988 55,313 59,529
Distribution expense 77,790 71,343 64,350
Repairs and maintenance 50,892 40,133 33,450
Utilities 3,404 3,436 3,000
Taxes and fees, other than income taxes 16,898 15,934 13,527
Short-term lease rentals 27,395 22,433 14,355
Risk insurance, including loss retention 15,239 12,201 13,167
Cost of goods sold 1,217,738 1,228,112 1,142,880
Cost of sales      
Disclosure of attribution of expenses by nature to their function [line items]      
Payroll and employee related expenses 277,913 257,919 227,897
Depreciation, depletion, and amortization 84,855 79,360 78,571
Short-term lease rentals 24,810 22,325 13,587
Travel, training, and other employee expense 3,197 2,877 2,821
Other $ 4,808 $ 2,136 $ 5,582