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Reportable segments (Details 1) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Statement [Line Items] |  |  |
Revenue | $ 1,817,191 | $ 1,943,655 | $ 2,265,803
Cost of sales | (1,334,321) | (1,383,603) | (1,485,631)
Gross profit | 482,870 | 560,052 | 780,172
Other incomes by function | 26,893 | 18,218 | 32,048
Administrative expenses | (107,017) | (117,180) | (118,126)
Other expenses by function | (99,612) | (25,995) | (36,907)
Impairment of gains and review of impairment losses (impairment losses) determined in accordance with IFRS 9 | 4,684 | (1,057) | 2,967
Other gains (losses) | (5,313) | (383) | 6,404
Financial income | 13,715 | 26,289 | 22,533
Finance costs | (82,199) | (76,939) | (57,807)
interest in the profit or loss of associates and joint ventures accounted for by the equity method | 8,940 | 9,786 | 6,351
Exchange differences | (4,423) | (2,169) | (16,597)
Profit (loss) before taxes | 238,538 | 390,622 | 621,038
Income tax expense | (70,179) | (110,019) | (178,975)
Profit (loss) from continuing operations | 168,359 | 280,603 | 442,063
Profit (loss) from discontinued operations | 0 | 0 | 0
Profit (loss) | 168,359 | 280,603 | 442,063
Profit (loss), attributable to [abstract] |  |  |
Profit (loss) attributable to the controller´s owners | 164,518 | 278,115 | 439,830
Profit (loss) attributable to the non-controllers | 3,841 | 2,488 | 2,233
Profit (loss) | 168,359 | 280,603 | 442,063
Specialty plant nutrients [Member] |  |  |
Statement [Line Items] |  |  |
Revenue | 701,688 | 723,920 | 781,751
Cost of sales | (537,801) | (573,808) | (613,267)
Gross profit | 163,887 | 150,112 | 168,484
Other incomes by function | 0 | 0 | 0
Administrative expenses | 0 | 0 | 0
Other expenses by function | 0 | 0 | 0
Impairment of gains and review of impairment losses (impairment losses) determined in accordance with IFRS 9 | 0 | 0 | 0
Other gains (losses) | 0 | 0 | 0
Financial income | 0 | 0 | 0
Finance costs | 0 | 0 | 0
interest in the profit or loss of associates and joint ventures accounted for by the equity method | 0 | 0 | 0
Exchange differences | 0 | 0 | 0
Profit (loss) before taxes | 163,887 | 150,112 | 168,484
Income tax expense | 0 | 0 | 0
Profit (loss) from continuing operations | 163,887 | 150,112 | 168,484
Profit (loss) from discontinued operations | 0 | 0 | 0
Profit (loss) | 163,887 | 150,112 | 168,484
Profit (loss), attributable to [abstract] |  |  |
Profit (loss) attributable to the controller´s owners | 0 | 0 | 0
Profit (loss) attributable to the non-controllers | 0 | 0 | 0
Profit (loss) | 163,887 | 150,112 | 168,484
Iodine and its derivatives [Member] |  |  |
Statement [Line Items] |  |  |
Revenue | 334,657 | 371,020 | 324,972
Cost of sales | (168,499) | (230,468) | (217,464)
Gross profit | 166,158 | 140,552 | 107,508
Other incomes by function | 0 | 0 | 0
Administrative expenses | 0 | 0 | 0
Other expenses by function | 0 | 0 | 0
Impairment of gains and review of impairment losses (impairment losses) determined in accordance with IFRS 9 | 0 | 0 | 0
Other gains (losses) | 0 | 0 | 0
Financial income | 0 | 0 | 0
Finance costs | 0 | 0 | 0
interest in the profit or loss of associates and joint ventures accounted for by the equity method | 0 | 0 | 0
Exchange differences | 0 | 0 | 0
Profit (loss) before taxes | 166,158 | 140,552 | 107,508
Income tax expense | 0 | 0 | 0
Profit (loss) from continuing operations | 166,158 | 140,552 | 107,508
Profit (loss) from discontinued operations | 0 | 0 | 0
Profit (loss) | 166,158 | 140,552 | 107,508
Profit (loss), attributable to [abstract] |  |  |
Profit (loss) attributable to the controller´s owners | 0 | 0 | 0
Profit (loss) attributable to the non-controllers | 0 | 0 | 0
Profit (loss) | 166,158 | 140,552 | 107,508
Lithium and its derivatives [Member] |  |  |
Statement [Line Items] |  |  |
Revenue | 383,373 | 505,714 | 734,801
Cost of sales | (297,048) | (306,250) | (316,875)
Gross profit | 86,325 | 199,464 | 417,926
Other incomes by function | 0 | 0 | 0
Administrative expenses | 0 | 0 | 0
Other expenses by function | 0 | 0 | 0
Impairment of gains and review of impairment losses (impairment losses) determined in accordance with IFRS 9 | 0 | 0 | 0
Other gains (losses) | 0 | 0 | 0
Financial income | 0 | 0 | 0
Finance costs | 0 | 0 | 0
interest in the profit or loss of associates and joint ventures accounted for by the equity method | 0 | 0 | 0
Exchange differences | 0 | 0 | 0
Profit (loss) before taxes | 86,325 | 199,464 | 417,926
Income tax expense | 0 | 0 | 0
Profit (loss) from continuing operations | 86,325 | 199,464 | 417,926
Profit (loss) from discontinued operations | 0 | 0 | 0
Profit (loss) | 86,325 | 199,464 | 417,926
Profit (loss), attributable to [abstract] |  |  |
Profit (loss) attributable to the controller´s owners | 0 | 0 | 0
Profit (loss) attributable to the non-controllers | 0 | 0 | 0
Profit (loss) | 86,325 | 199,464 | 417,926
Industrial chemicals [Member] |  |  |
Statement [Line Items] |  |  |
Revenue | 160,608 | 94,875 | 108,267
Cost of sales | (119,092) | (63,590) | (72,964)
Gross profit | 41,516 | 31,285 | 35,303
Other incomes by function | 0 | 0 | 0
Administrative expenses | 0 | 0 | 0
Other expenses by function | 0 | 0 | 0
Impairment of gains and review of impairment losses (impairment losses) determined in accordance with IFRS 9 | 0 | 0 | 0
Other gains (losses) | 0 | 0 | 0
Financial income | 0 | 0 | 0
Finance costs | 0 | 0 | 0
interest in the profit or loss of associates and joint ventures accounted for by the equity method | 0 | 0 | 0
Exchange differences | 0 | 0 | 0
Profit (loss) before taxes | 41,516 | 31,285 | 35,303
Income tax expense | 0 | 0 | 0
Profit (loss) from continuing operations | 41,516 | 31,285 | 35,303
Profit (loss) from discontinued operations | 0 | 0 | 0
Profit (loss) | 41,516 | 31,285 | 35,303
Profit (loss), attributable to [abstract] |  |  |
Profit (loss) attributable to the controller´s owners | 0 | 0 | 0
Profit (loss) attributable to the non-controllers | 0 | 0 | 0
Profit (loss) | 41,516 | 31,285 | 35,303
Potassium [Member] |  |  |
Statement [Line Items] |  |  |
Revenue | 209,294 | 212,151 | 267,474
Cost of sales | (187,019) | (176,199) | (217,386)
Gross profit | 22,275 | 35,952 | 50,088
Other incomes by function | 0 | 0 | 0
Administrative expenses | 0 | 0 | 0
Other expenses by function | 0 | 0 | 0
Impairment of gains and review of impairment losses (impairment losses) determined in accordance with IFRS 9 | 0 | 0 | 0
Other gains (losses) | 0 | 0 | 0
Financial income | 0 | 0 | 0
Finance costs | 0 | 0 | 0
interest in the profit or loss of associates and joint ventures accounted for by the equity method | 0 | 0 | 0
Exchange differences | 0 | 0 | 0
Profit (loss) before taxes | 22,275 | 35,952 | 50,088
Income tax expense | 0 | 0 | 0
Profit (loss) from continuing operations | 22,275 | 35,952 | 50,088
Profit (loss) from discontinued operations | 0 | 0 | 0
Profit (loss) | 22,275 | 35,952 | 50,088
Profit (loss), attributable to [abstract] |  |  |
Profit (loss) attributable to the controller´s owners | 0 | 0 | 0
Profit (loss) attributable to the non-controllers | 0 | 0 | 0
Profit (loss) | 22,275 | 35,952 | 50,088
Other products and services [Member] |  |  |
Statement [Line Items] |  |  |
Revenue | 27,571 | 35,975 | 48,538
Cost of sales | (24,862) | (33,288) | (47,675)
Gross profit | 2,709 | 2,687 | 863
Other incomes by function | 0 | 0 | 0
Administrative expenses | 0 | 0 | 0
Other expenses by function | 0 | 0 | 0
Impairment of gains and review of impairment losses (impairment losses) determined in accordance with IFRS 9 | 0 | 0 | 0
Other gains (losses) | 0 | 0 | 0
Financial income | 0 | 0 | 0
Finance costs | 0 | 0 | 0
interest in the profit or loss of associates and joint ventures accounted for by the equity method | 0 | 0 | 0
Exchange differences | 0 | 0 | 0
Profit (loss) before taxes | 2,709 | 2,687 | 863
Income tax expense | 0 | 0 | 0
Profit (loss) from continuing operations | 2,709 | 2,687 | 863
Profit (loss) from discontinued operations | 0 | 0 | 0
Profit (loss) | 2,709 | 2,687 | 863
Profit (loss), attributable to [abstract] |  |  |
Profit (loss) attributable to the controller´s owners | 0 | 0 | 0
Profit (loss) attributable to the non-controllers | 0 | 0 | 0
Profit (loss) | 2,709 | 2,687 | 863
Corporate unit [Member] |  |  |
Statement [Line Items] |  |  |
Revenue | 0 | 0 | 0
Cost of sales | 0 | 0 | 0
Gross profit | 0 | 0 | 0
Other incomes by function | 26,893 | 18,218 | 32,048
Administrative expenses | (107,017) | (117,180) | (118,126)
Other expenses by function | (99,612) | (25,995) | (36,907)
Impairment of gains and review of impairment losses (impairment losses) determined in accordance with IFRS 9 | 4,684 | (1,057) | 2,967
Other gains (losses) | (5,313) | (383) | 6,404
Financial income | 13,715 | 26,289 | 22,533
Finance costs | (82,199) | (76,939) | (57,807)
interest in the profit or loss of associates and joint ventures accounted for by the equity method | 8,940 | 9,786 | 6,351
Exchange differences | (4,423) | (2,169) | (16,597)
Profit (loss) before taxes | (244,332) | (169,430) | (159,134)
Income tax expense | (70,179) | (110,019) | (178,975)
Profit (loss) from continuing operations | (314,511) | (279,449) | (338,109)
Profit (loss) from discontinued operations | 0 | 0 | 0
Profit (loss) | (314,511) | (279,449) | (338,109)
Profit (loss), attributable to [abstract] |  |  |
Profit (loss) attributable to the controller´s owners | 164,518 | 278,115 | 439,830
Profit (loss) attributable to the non-controllers | 3,841 | 2,488 | 2,233
Profit (loss) | $ (314,511) | $ (279,449) | $ (338,109)

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