XML 86 R55.htm IDEA: XBRL DOCUMENT v3.22.4
Share Capital and Reserves - Additional Information (Detail)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
Dec. 20, 2022
$ / shares
Oct. 04, 2022
USD ($)
$ / shares
shares
Sep. 29, 2022
$ / shares
Jun. 30, 2022
$ / shares
Mar. 31, 2022
$ / shares
Aug. 31, 2022
Dec. 31, 2022
USD ($)
yr
shares
$ / shares
Dec. 31, 2022
USD ($)
shares
$ / shares
$ / shares
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2021
shares
$ / shares
Dec. 31, 2020
shares
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Treasury shares authorized to purchase | shares             18,900,000 18,900,000      
Maximum percentage share compensation arrangements relative to outstanding shares             8.50%        
Average share price of entity               $ 8.1   $ 8.76  
Dividend recognized as distribution to owners per share $ 0.02   $ 0.02 $ 0.02 $ 0.02            
Proceeds from issue of ordinary shares | $             $ 86,031   $ 0    
Compañia Minera Caserones [Member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Percentage of interest acquired in subsidiary           67.50%          
Stock Option Incentive Plan [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Number of option issued | shares             6,249,148   2,968,000    
Weighted average exercise price               $ 7.19   7.18  
Fair value of option issued | $             $ 5,700 $ 5,700      
Fair value per option             $ 1.35        
Expected volatility             34.25%        
Risk-free interest rate             4.03%        
Dividend yield             1.12%        
Expected life | yr             3        
Description of option pricing model, share options granted             BSM        
Weighted average share price at time of exercise of options               $ 7.82   $ 7.74  
Weighted average remaining contractual life of outstanding share options             2 years 11 months 15 days   3 years 3 months 3 days    
Number of options outstanding | shares             16,356,022 16,356,022 11,239,342 11,239,342 9,127,103
Restricted Share Rights [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Number of option issued | shares             566,500        
Fair value of option issued | $             $ 3,000 $ 3,000      
Fair value per option             $ 5.25        
Shares authorized for issuance share based compensation arrangement | shares             4,500,000 4,500,000      
Vesting term             three year        
Number of options outstanding | shares             2,262,667 2,262,667      
Warrants [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Weighted average share price at time of exercise for other equity instruments exercised or vested in share-based payment arrangement               $ 7.4      
Number of other equity instruments outstanding in share-based payment arrangement | shares             242,000 242,000 0 0  
Weighted average exercise price of other equity instruments outstanding in share-based payment arrangement             $ 8.97 $ 8.97      
Expiry date of other equity instruments             May 13, 2024        
Public Share Offering [Member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Number of shares issued | shares   18,055,000                  
Share price   $ 5.1                  
Proceeds from issue of ordinary shares | $   $ 92,100                  
Agent Fees | $   $ 4,600                  
Percentage of gross proceeds representing agent fees   5.00%                  
Employee Stock Option Incentive Plan [member]                      
Disclosure of terms and conditions of share-based payment arrangement [line items]                      
Number of option issued | shares             4,231,000        
Weighted average exercise price               $ 7.12      
Weighted average share price granted               $ 7.12