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Income tax and deferred taxes - Tax Loss Carryforwards (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Disclosure of Income tax and deferred taxes [Line Items]    
Net operating loss carryforwards $ 10,059 $ 8,557
Chile    
Disclosure of Income tax and deferred taxes [Line Items]    
Net operating loss carryforwards $ 10,059 7,113
Foreign    
Disclosure of Income tax and deferred taxes [Line Items]    
Net operating loss carryforwards   $ 1,444