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Joint Ventures (Details Textual) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 09, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Statement [Line Items] |  |  |  |  |  |  |
Other cash payments to acquire interests in joint ventures, classified as investing activities |  |  |  |  | $ 0 | $ 16,949 | $ 2,600
Gain loss on disposal of investments in joint ventures |  |  | $ 643 |  |  |  |
Soquimich European Holding B.V. [Member] |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |
Other cash payments to acquire interests in joint ventures, classified as investing activities |  |  |  | $ 1,276 |  |  |
Arpa Speciali SRL [Member] |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |
Disposal of interests in joint ventures consideration receivable |  |  |  | 56 |  |  |
Gain loss on disposal of investments in joint ventures |  |  |  | 125 |  |  |
Proceeds from disposal of interests in joint ventures |  |  |  | 17 |  |  |
Arpa Speciali SRL [Member] | Other Accounts Receivable [Member] |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |
Disposal of interest in joint ventures balance consideration receivable current |  |  |  | 20 |  |  |
Disposal of interest in joint ventures balance consideration receivable non current |  |  |  | $ 20 |  |  |
Coromandel SQM India [Member] |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |
Proceeds from disposal of interests in joint ventures |  |  | $ 1,604 |  |  |  |
SQM Star Qingdao Corp Nutrition Co., Ltd. [Member] |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |
Gain loss on disposal of investments in joint ventures |  | $ 62 |  |  |  |  |
Proceeds from disposal of interests in joint ventures |  | 1,303 |  |  |  |  |
Sichuan SQM Migao Chemical Fertilizers Co Ltd [Member] |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |
Reversal of impairment losses on investment in associates |  | 7,036 |  |  |  |  |
Sales contracts and interest in the joint venture | $ 11,500 |  |  |  |  |  |
Kidmann Resourcs Westmen And Mt Holland [Member] |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |
Contribution towards projects in joint operations |  | 30,000 |  |  |  |  |
Wesment Farmers Limited [Member] |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |
Contribution towards projects in joint operations |  | $ 15,000 |  |  |  |  |
Mt Holland [Member] |  |  |  |  |  |  |
Statement [Line Items] |  |  |  |  |  |  |
Finance activities for the year |  |  |  |  |  | $ 50,000 |

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