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Joint Ventures (Details Textual) $ in Thousands, in Thousands | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
May 15, 2018 USD ($) | Dec. 01, 2017 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) MT | Dec. 31, 2016 USD ($) | Apr. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Oct. 06, 2017 USD ($) | Oct. 06, 2017 CLF ( )
Percentage of voting equity interests acquired |  |  |  | 50.00% |  |  |  |  |
Other cash payments to acquire interests in joint ventures, classified as investing activities |  |  | $ 19,989 | $ 38,088 | $ 45,000 |  |  |  |
Volume of lithium metallic equivalent authorised to process and sell | MT |  |  |  | 45,000 |  |  |  |  |
Payments for development project expenditure |  |  |  | $ 7,500 |  |  |  |  |
Contingent Consideration Initial Payment |  |  |  | 15,000 |  |  |  |  |
Payments Of Deferrred Contingent Consideration |  |  |  | 30,000 |  |  |  |  |
Amounts recognised for transaction recognised separately from acquisition of assets and assumption of liabilities in business combination |  |  |  | 10,000 |  |  |  |  |
Contingent Consideration Deferred Payment |  |  |  | 55,000 |  |  |  |  |
Kidman [Member] |  |  |  |  |  |  |  |  |
Capital commitments |  |  |  | 37,500 |  |  |  |  |
Payments for development project expenditure |  |  |  | 7,500 |  |  |  |  |
Minera Exar S.A. [Member] |  |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  | 50.00% |  |  |  |  |  |  |
Other cash payments to acquire interests in joint ventures, classified as investing activities |  | $ 6,205 |  |  |  |  |  |  |
Gain (loss) that relates to identifiable assets acquired or liabilities assumed in business combination and is of such size, nature or incidence that disclosure is relevant to understanding combined entity's financial statements |  |  | 14,507 |  |  |  |  |  |
Capital contributions made by related entities |  |  |  |  |  | $ 7,000 | $ 13,000 | $ 13,300 | 2,304,225
Percentage of interest held by other entities |  |  |  |  |  |  |  | 50.00% | 50.00%
SQM Potasio S.A. [Member] |  |  |  |  |  |  |  |  |
Impairment loss |  |  | 8,802 |  |  |  |  |  |
Pavoni C Spa [Member] |  |  |  |  |  |  |  |  |
Acquisitions through business combinations, intangible assets and goodwill |  |  | $ 3,206 |  |  |  |  |  |
SQM Australia Pty [Member] |  |  |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  |  |  | $ 70,000 |  |  |  |  |
Soquimich European Holding B.V. [Member] |  |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired | 50.00% |  |  |  |  |  |  |  |
Other cash payments to acquire interests in joint ventures, classified as investing activities | $ 6,800 |  |  |  |  |  |  |  |

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