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REVENUE (Tables)
 12 Months Ended
Dec. 31, 2021
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
The following table represents revenues by product (in thousands): 
Years Ended December 31,
 
2021
2020
2019
Gold doré sales
Copler
$600,790 $205,535 $— 
Marigold
426,288 409,746 315,350 
Seabee
213,766 135,177 146,016 
Concentrate sales
Puna
229,959 105,350 144,839 
Other (1)
Copler
7,097 — — 
Marigold
103 53 69 
Seabee
94 53 49 
Puna
(3,898)(2,825)527 
Total
$1,474,199 $853,089 $606,850 
(1)Other revenue includes: changes in the fair value of concentrate trade receivables due to changes in silver and base metal prices; and silver and copper by-product revenue arising from the production and sale of gold doré.  
Revenue by metal type for the years ended December 31, 2021, 2020 and 2019 are as follows (in thousands): 
Years Ended December 31,
2021
2020
2019
Gold 
$
1,240,844 
$
750,458 
$
461,366 
Silver 183,378 92,260 115,640 
Lead 33,070 8,815 19,541 
Zinc 13,511 4,275 9,658 
Other
3,396 (2,719)645 
Total   
$
1,474,199 
$
853,089 
$
606,850