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Contingencies and restrictions (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Aug. 31, 2015 | Dec. 31, 2018 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2017 | Mar. 24, 2017 | Aug. 26, 2016
Lawsuits, litigation status |  | Filing of the case, processing suspended. |  |  |  |  |
Level of consolidated financial indicators required by the Company to comply with |  | To maintain Leverage Ratio not higher than 1.2 times at its strictest level. The Leverage ratio is defined as the Total Liabilities divided by Total Equity. |  |  |  |  |
Taxes, interests and other charges |  |  |  | $ 8,100 |  |  |
Payments for taxes, interests and other charges | $ 1,400 |  | $ 50,000,000 |  |  |  |
Penalties payable as percentage of taxes paid |  | 50% and 300% |  |  |  |  |
Tax contingency, amount claimed |  |  |  |  |  | $ 14,400 | $ 17,800
Tax contingency, amount under dispute |  | $ 32,200 |  |  |  |  |
Tax contingency, amount under dispute correspond to excess charge levied |  | 7,000 |  |  |  |  |
Expected claim for differences in specific tax on mining activities |  | 57,000 |  |  |  |  |
Guarantee obligations |  | $ 712 |  |  |  |  |
Description of lawsuits received |  | The Company and its subsidiaries have received no legal notice on lawsuits other than those indicated above, which exceed US$0.2 million. |  |  |  |  |
Soquimich Comercial S.A. [Member] |  |  |  |  |  |  |
Lawsuits, damages owed, value |  | $ 1,200 |  |  |  |  |
Collateral Security Carrying Value |  | $ 9,423 |  |  | $ 12,103 |  |
Lawsuit one [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | Nancy Erika Urra Muñoz, |  |  |  |  |
Lawsuits, name of defendant |  | Fresia Flores Zamorano, Duratec-Vinilit S.A. and the Company and their Insurers. |  |  |  |  |
Lawsuits, lawsuit filing date |  | December 2008. |  |  |  |  |
Lawsuits, domicile of litigation |  | 1st Civil Court of Santiago. |  |  |  |  |
Lawsuits, allegations |  | Labor Accident. |  |  |  |  |
Lawsuits, litigation status |  | Judgment favorable for the Company. Dated March 11, 2016. Appeal filed by the plaintiff which has not been pronounced on. Awaiting notification of the sentence, case filed on December 28, 2016 |  |  |  |  |
Lawsuits, nominal value |  | ThUS$550. |  |  |  |  |
Lawsuit two [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | City of Pomona, California USA. |  |  |  |  |
Lawsuits, name of defendant |  | SQM North America Corporation (“SQM NA”). |  |  |  |  |
Lawsuits, lawsuit filing date |  | December 2010. |  |  |  |  |
Lawsuits, domicile of litigation |  | United States District Court Central District of California. |  |  |  |  |
Lawsuits, allegations |  | Payment of expenses and other amounts related to the treatment of groundwater to allow for its consumption by removing the existing perchlorate in such groundwater that allegedly comes from Chilean fertilizers. |  |  |  |  |
Lawsuits, litigation status |  | On May 17, 2018, district judge Gary Klausner sentenced in favor of SQM NA following the verdict of the jury. On September 14, 2018, the plaintiff filed a motion to appeal, which is pending resolution. |  |  |  |  |
Lawsuits, nominal value |  | ThUS$32,000. |  |  |  |  |
Lawsuit three [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | City of Lindsay, California USA. |  |  |  |  |
Lawsuits, name of defendant |  | SQM NA and the Company (still not noticed) |  |  |  |  |
Lawsuits, lawsuit filing date |  | December 2010. |  |  |  |  |
Lawsuits, domicile of litigation |  | United States District Court Eastern District of California. |  |  |  |  |
Lawsuits, allegations |  | Payment of expenses and other amounts related to the treatment of groundwater to allow for its consumption by removing the existing perchlorate in such groundwater that allegedly comes from Chilean fertilizers. |  |  |  |  |
Lawsuits, nominal value |  | Not possible to determine. |  |  |  |  |
Lawsuit four [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | H&V Van Mele N.V. |  |  |  |  |
Lawsuits, name of defendant |  | NV Euroports, SQM Europe N.V. and its insurance companies, |  |  |  |  |
Lawsuits, lawsuit filing date |  | July 2013. |  |  |  |  |
Lawsuits, domicile of litigation |  | Commercial Court of Dendermonde, |  |  |  |  |
Lawsuits, allegations |  | Alleged indirect responsibility for the absence of adequate specifications for the SOP–WS by the Belgian distributor. |  |  |  |  |
Lawsuits, litigation status |  | Sentencing against NV Euroports and subsidy SQM Europe N.V., for EUR 206,675.91. Appeal presented in November 2017. |  |  |  |  |
Lawsuits, nominal value |  | ThUS$430. |  |  |  |  |
Lawsuit five [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | Carlos Aravena Carrizo et al. |  |  |  |  |
Lawsuits, name of defendant |  | SQM Nitratos S.A. (“SQM Nitratos”) and its insurers. |  |  |  |  |
Lawsuits, lawsuit filing date |  | May 2014. |  |  |  |  |
Lawsuits, domicile of litigation |  | 18th Civil Court of Santiago. |  |  |  |  |
Lawsuits, allegations |  | Lawsuit seeking compensation for damages for alleged civil liability under tort as a result of an explosion that occurred during 2010 near Baquedano, causing the death of 6 employees. |  |  |  |  |
Lawsuits, litigation status |  | Summons to hear sentence |  |  |  |  |
Lawsuits, nominal value |  | ThUS$1,235. |  |  |  |  |
Lawsuit six [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | Evt Consulting SpA. |  |  |  |  |
Lawsuits, name of defendant |  | SQM Nitratos. |  |  |  |  |
Lawsuits, lawsuit filing date |  | October 2014. |  |  |  |  |
Lawsuits, domicile of litigation |  | 23th Civil Court of Santiago. |  |  |  |  |
Lawsuits, allegations |  | Lawsuit seeking compensation for damages related to the termination of the purchase and sale agreement for metallic structures. |  |  |  |  |
Lawsuits, litigation status |  | On November 13, 2017, the Santiago Appeals Court sentenced SQM Nitratos S.A. to pay US$304,620. An appeal in form and substance was presented before the Supreme Court in December 2017. |  |  |  |  |
Lawsuits, nominal value |  | ThUS$835. |  |  |  |  |
Lawsuit seven [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | SQM Salar S.A. (“SQM Salar”) and the Company. |  |  |  |  |
Lawsuits, name of defendant |  | Seguros Generales Suramericana S.A. (formerly - RSA Seguros Chile S.A.) |  |  |  |  |
Lawsuits, lawsuit filing date |  | August 29, 2016. |  |  |  |  |
Lawsuits, domicile of litigation |  | Arbitration Court – Arbitrator Mr. Gonzalo Fernández. |  |  |  |  |
Lawsuits, allegations |  | Complaint for forced compliance and collection of indemnification for insurance claim of February 7 and 8, 2013. |  |  |  |  |
Lawsuits, litigation status |  | Evidence stage. |  |  |  |  |
Lawsuits, nominal value |  | ThUS$20,658. |  |  |  |  |
Lawsuit eight [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | Tyne and Wear Pension Fund as represented by the Council of the Borough of South Tyneside acting as Lead Plaintiff. |  |  |  |  |
Lawsuits, name of defendant |  | The Company |  |  |  |  |
Lawsuits, lawsuit filing date |  | Date : January 2016. |  |  |  |  |
Lawsuits, domicile of litigation |  | United States District Court – Southern District of New York. |  |  |  |  |
Lawsuits, allegations |  | Alleged damage to ADS holders of the Company resulting from alleged noncompliance with the securities regulations in the United States by the Company. |  |  |  |  |
Lawsuits, litigation status |  | Initial stage of disclosure of background information. |  |  |  |  |
Lawsuits, nominal value |  | Not determined. |  |  |  |  |
Lawsuit nine [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | Ernesto Saldaña González et al. |  |  |  |  |
Lawsuits, name of defendant |  | SQM Salar S.A., SQM Industrial S.A. (“SQM Industrial”) and their insurance companies. |  |  |  |  |
Lawsuits, lawsuit filing date |  | May 2016. |  |  |  |  |
Lawsuits, domicile of litigation |  | 13th Civil Court of Santiago. |  |  |  |  |
Lawsuits, allegations |  | Lawsuit seeking compensation for damages for alleged civil liability under tort law arising from the accident that occurred in July 2014 in the María Elena location. |  |  |  |  |
Lawsuits, litigation status |  | Summons to hear sentence |  |  |  |  |
Lawsuits, nominal value |  | ThUS$515. |  |  |  |  |
Lawsuit ten [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | María Yolanda Achiardi Tapia et al. |  |  |  |  |
Lawsuits, name of defendant |  | SQM Salar and its insurance companies and other 5 defendants |  |  |  |  |
Lawsuits, lawsuit filing date |  | February 2015. |  |  |  |  |
Lawsuits, domicile of litigation |  | 1st Civil Court of Antofagasta. |  |  |  |  |
Lawsuits, allegations |  | Lawsuit seeking compensation for damages for alleged civil liability under tort law arising from a traffic accident that occurred in April 2011 in the city of Antofagasta. |  |  |  |  |
Lawsuits, litigation status |  | Summons to hear sentence. |  |  |  |  |
Lawsuits, nominal value |  | ThUS$1,265. |  |  |  |  |
Lawsuit eleven [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | The Company |  |  |  |  |
Lawsuits, name of defendant |  | AES Gener S.A. (“Gener”) and Empresa Eléctrica Cochrane SpA (“Cochrane”). |  |  |  |  |
Lawsuits, lawsuit filing date |  | May 11, 2017. |  |  |  |  |
Lawsuits, domicile of litigation |  | Arbitration award in accordance with the arbitration rules established by the Center for Arbitration and Mediation of the Santiago Chamber of Commerce (“CAM). |  |  |  |  |
Lawsuits, allegations |  | Request for the interpretation of an electricity supply agreement alleging the right by the plaintiff to receive a collection in conformity with such agreement. |  |  |  |  |
Lawsuits, litigation status |  | Evidentiary stage. |  |  |  |  |
Lawsuits, nominal value |  | Not determined. |  |  |  |  |
Lawsuit twelve [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | Gener and Cochrane. |  |  |  |  |
Lawsuits, name of defendant |  | The Company. |  |  |  |  |
Lawsuits, lawsuit filing date |  | May 2017. |  |  |  |  |
Lawsuits, domicile of litigation |  | Arbitration in accordance with the rules established by the Center for Arbitration and Mediation (CAM). |  |  |  |  |
Lawsuits, allegations |  | Discrepancy with respect to the amount of an alleged right by the plaintiff to receive a collection in conformity with the agreement entered into by the parties. |  |  |  |  |
Lawsuits, litigation status |  | Evidentiary stage. |  |  |  |  |
Lawsuits, nominal value |  | Not determined. |  |  |  |  |
Lawsuit thirteen [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | Transportes Buen Destino |  |  |  |  |
Lawsuits, name of defendant |  | SQM Salar. |  |  |  |  |
Lawsuits, lawsuit filing date |  | None. |  |  |  |  |
Lawsuits, domicile of litigation |  | Arbitration in accordance with the rules established by the Center for Arbitration and Mediation (CAM). |  |  |  |  |
Lawsuits, allegations |  | Discrepancies generated in the implementation of the following contracts entered into between TBD and SQM Salar: (i) lithium brine transportation; and (ii) salt transportation. |  |  |  |  |
Lawsuits, litigation status |  | Prior stage. The audience for setting procedure rules is pending |  |  |  |  |
Lawsuits, nominal value |  | Undetermined. |  |  |  |  |
Lawsuit fourteen [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | Castillo, Hernán et al. |  |  |  |  |
Lawsuits, name of defendant |  | Servicios Integrales de Tránsitos y Transferencias S.A. and SQM Industrial S.A. |  |  |  |  |
Lawsuits, lawsuit filing date |  | September 15, 2017. |  |  |  |  |
Lawsuits, domicile of litigation |  | 1st Labor Court of Santiago. |  |  |  |  |
Lawsuits, allegations |  | Lawsuit to assert labor rights, seeking collection of wages owed and other amounts. |  |  |  |  |
Lawsuits, litigation status |  | On August 24, 2018, a judgment is issued rejecting the application in its entirety. On September 6, 2018, plaintiffs deduct an appeal for nullity before the Santiago Court of Appeals, which is still in branch. |  |  |  |  |
Lawsuits, nominal value |  | ThUS$1,940. |  |  |  |  |
Lawsuit fifteen [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | Acosta Tapia, Eloisa del Tránsito and others as successors and assigns of Araya Castillo, Raimundo del Rosario. |  |  |  |  |
Lawsuits, name of defendant |  | SQM Salar. |  |  |  |  |
Lawsuits, lawsuit filing date |  | January 19, 2018. |  |  |  |  |
Lawsuits, domicile of litigation |  | 2nd Labor Court of Santiago. |  |  |  |  |
Lawsuits, allegations |  | Lawsuit for damages for pain and suffering as a result of occupational illness. |  |  |  |  |
Lawsuits, litigation status |  | On October 22, the final ruling was issued, wherein the claim was denied. The plaintiff filed an appeal for annulment, which is pending with the Court of Appeals of Santiago |  |  |  |  |
Lawsuits, nominal value |  | ThUS$472. |  |  |  |  |
Lawsuit sixteen [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | Asociación Indígena Consejo Pueblos Atacameños and others. |  |  |  |  |
Lawsuits, name of defendant |  | Corfo, the Company, SQM Salar and SQM Potasio S.A. |  |  |  |  |
Lawsuits, lawsuit filing date |  | February 15, 2018. |  |  |  |  |
Lawsuits, domicile of litigation |  | Santiago Court of Appeals |  |  |  |  |
Lawsuits, allegations |  | Appeal requesting annulment of modifications to contracts signed by the defendants on January 17, 2018. |  |  |  |  |
Lawsuits, litigation status |  | On September 25, the Court of Appeals of Santiago rejected the appeal for protection. On October 12, the Supreme Court ordered the revision of the appeal filed by the appellants. |  |  |  |  |
Lawsuits, nominal value |  | Undetermined. |  |  |  |  |
Lawsuit seventeen [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | The Society. |  |  |  |  |
Lawsuits, name of defendant |  | Office of the Superintendent of the Environment (“SMA”) |  |  |  |  |
Lawsuits, lawsuit filing date |  | 20 July 2017 |  |  |  |  |
Lawsuits, domicile of litigation |  | Second Environmental Court of Santiago |  |  |  |  |
Lawsuits, allegations |  | Motion for review filed by the Company against ruling rejecting the compliance program for the Pampa Hermosa project. |  |  |  |  |
Lawsuits, litigation status |  | On August 21, 2018, the Second Environmental Court of Santiago accepted the Company’s claim and ordered the SMA to take the procedure back to the stage prior to their sentencing that rejected the compliance program. This ruling was appealed with the Supreme Court on August 8, 2018. |  |  |  |  |
Lawsuits, nominal value |  | Amount involved: Undetermined. |  |  |  |  |
Lawsuit eighteen [Member] |  |  |  |  |  |  |
Lawsuits, name of plaintiff |  | Congresspersons Claudia Nathalie Mix Jiménez, Gael Fernanda Yeomans Araya, Camila Ruslay Rojas Valderrama et al. |  |  |  |  |
Lawsuits, name of defendant |  | CORFO. The entity has intervened as an independent third party. |  |  |  |  |
Lawsuits, lawsuit filing date |  | September 6, 2018. |  |  |  |  |
Lawsuits, domicile of litigation |  | Special Magistrate, Mr. Alejandro Madrid Crohare. |  |  |  |  |
Lawsuits, allegations |  | To render null and void the contract for the Salar de Atacama Project signed between CORFO and SQM Salar. |  |  |  |  |
Lawsuits, litigation status |  | Pending ruling on dilatory pleas and independent third-party status of companies and subsidiaries. |  |  |  |  |
Lawsuits, nominal value |  | Undetermined. |  |  |  |  |

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