XML 135 R108.htm IDEA: XBRL DOCUMENT v3.21.1
Cost of Sales (Schedule of Cost of Sales) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]    
Direct mining costs $ 94,609 $ 101,734
Salaries and benefits 16,586 15,040
Workers' Participation 7,459 6,011
Depletion and depreciation 43,778 44,358
Royalties 6,318 4,135
Impairment of inventories   1,328
Reversal of inventory write-down (5)  
Cost of sales 168,745 172,606
Depletion and depreciation, right-of-use 2,542 2,262
Caylloma M&I Property [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Direct mining costs 31,738 35,712
Salaries and benefits 6,883 7,557
Workers' Participation 899 717
Depletion and depreciation 14,301 13,621
Royalties 523 750
Impairment of inventories 13 93
Cost of sales 54,357 58,450
San Jose M&I Property [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Direct mining costs 58,726 66,022
Salaries and benefits 6,902 7,483
Workers' Participation 6,560 5,294
Depletion and depreciation 27,856 30,737
Royalties 4,289 3,385
Impairment of inventories   1,235
Reversal of inventory write-down (18)  
Cost of sales 104,315 $ 114,156
Lindero Project [member]    
Disclosure of detailed information about property, plant and equipment [line items]    
Direct mining costs 4,145  
Salaries and benefits 2,801  
Depletion and depreciation 1,621  
Royalties 1,506  
Cost of sales $ 10,073