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Exploration in operating units (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Beginning balance of finished goods and products in process, net of depreciation and amortization | $ 2,036 | $ 1,296 | $ 444
Total exploration in operating units | 79,748 | 57,152 | 28,896
Final balance of products in process and finished goods, net of depreciation and amortization | (1,408) | (2,036) | (1,296)
Write - off of products in process | 420 | 0 | 0
Final balance of finished goods and products in process , net of depreciation and amortization | 988 | 2,036 | 1,296
Exploration in operating units | 80,796 | 56,412 | 28,044
Disbursement of exploration in operating activities | 80,796 | 56,412 | 28,044
Services provided by third parties |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 51,912 | 45,437 | 20,406
Purchase of land |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 10,066 | 0 | 2,162
Direct labor |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 7,097 | 3,891 | 3,361
Short-term and low-value lease |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 5,016 | 2,641 | 766
Consumption of materials and supplies |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 4,502 | 3,839 | 1,426
Transport |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 470 | 108 | 12
Maintenance and repair |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 211 | 165 | 9
Electricity and water |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | 72 | 834 | 471
Other |  |  |
Disclosure Of Exploration In Operating Units [Line Items] |  |  |
Exploration in operating units | $ 402 | $ 237 | $ 283

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