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Property, plant and equipment - Types and Classes of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Property, plant and equipments [Abstract]      
Land $ 23,482 $ 23,507  
Buildings 273,913 270,563  
Other property, plant and equipment 34,960 32,846  
Transport equipment 9,487 2,463  
Suppliers and accessories 4,798 5,556  
Office equipment 1,355 1,386  
Network and communication equipment 1,872 1,359  
Mining assets 60,284 38,241  
IT equipment 3,147 3,570  
Energy generating assets 3,253 3,970  
Construction in progress 1,328,508 731,787  
Machinery, plant and equipment 981,779 896,977  
Total 2,726,838 2,012,225 $ 1,737,319
Description of classes of property, plant and equipment [Abstract]      
Pumps 32,120 28,889  
Conveyor Belt 17,135 18,294  
Crystallizer 48,582 20,189  
Plant Equipment 163,594 168,370  
Tanks 25,923 22,358  
Filter 47,976 41,438  
Electrical equipment/facilities 110,275 97,594  
Other Property, Plant & Equipment 112,628 71,150  
Site Closure 36,673 34,248  
Piping 107,481 106,317  
Well 177,708 202,982  
Pond 41,729 42,547  
Spare Parts 59,955 42,601  
Total 981,779 896,977  
Gross carrying amount      
Property, plant and equipments [Abstract]      
Land 23,482 23,507  
Buildings 803,398 767,096  
Other property, plant and equipment 250,058 239,582  
Transport equipment 21,343 13,357  
Suppliers and accessories 29,426 28,786  
Office equipment 13,141 12,943  
Network and communication equipment 10,878 9,577  
Mining assets 230,803 195,889  
IT equipment 31,197 30,456  
Energy generating assets 38,540 38,540  
Construction in progress 1,328,508 731,787  
Machinery, plant and equipment 3,716,440 3,464,881  
Total 6,497,214 5,556,401  
Description of classes of property, plant and equipment [Abstract]      
Total 3,716,440 3,464,881  
Accumulated depreciation and amortization      
Property, plant and equipments [Abstract]      
Buildings (529,485) (496,533)  
Other property, plant and equipment (215,098) (206,736)  
Transport equipment (11,856) (10,894)  
Suppliers and accessories (24,628) (23,230)  
Office equipment (11,786) (11,557)  
Network and communication equipment (9,006) (8,218)  
Mining assets (170,519) (157,648)  
IT equipment (28,050) (26,886)  
Energy generating assets (35,287) (34,570)  
Machinery, plant and equipment (2,734,661) (2,567,904)  
Total (3,770,376) (3,544,176)  
Description of classes of property, plant and equipment [Abstract]      
Total $ (2,734,661) $ (2,567,904)