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OPERATING SEGMENT REPORTING - Summary of Reportable Operating Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Operating Segment Reporting |  |  |  |
Revenue from gold and silver sales | $ 25,988 | $ 37,129 | $ 82,177 | $ 101,575
Depreciation and depletion | (4,313) | (6,025) | (11,494) | (16,677)
Gross profit (loss) | 1,503 | 344 | (256) | (583)
Advanced projects - Other | (8,817) | (4,013) | (34,874) | (6,635)
Income (loss) from investment in Minera Santa Cruz S.A. | 758 | (2,650) | 2,149 | (5,077)
Segment income (loss) | (10,485) | (12,564) | (44,413) | (30,412)
General and Administrative and other | (581) | (5,678) | (938) | (9,322)
Loss before income and mining taxes | (11,066) | (18,242) | (45,351) | (39,734)
Capital expenditures | 8,078 | 11,128 | 16,512 | 21,452
United States Reportable Segment [Member] |  |  |  |
Operating Segment Reporting |  |  |  |
Revenue from gold and silver sales | 12,596 | 21,683 | 34,334 | 60,919
Depreciation and depletion | (1,514) | (2,140) | (3,275) | (6,208)
Gross profit (loss) | (1,275) | 790 | (3,775) | 1,335
Advanced projects - Other | (4) | (234) | (52) | (203)
Segment income (loss) | (2,334) | (876) | (7,574) | (2,755)
Capital expenditures | 1,012 | 353 | 1,508 | 1,110
Canada |  |  |  |
Operating Segment Reporting |  |  |  |
Revenue from gold and silver sales | 13,058 | 14,227 | 46,200 | 34,966
Depreciation and depletion | (2,799) | (3,885) | (8,219) | (10,469)
Gross profit (loss) | 4,063 | 707 | 11,878 | 1,875
Advanced projects - Other | (30) | (871) | (227) | (2,058)
Segment income (loss) | 1,300 | (4,981) | 4,595 | (12,715)
Capital expenditures | 4,080 | 10,775 | 11,633 | 20,342
Mexico Reportable Segment [Member] |  |  |  |
Operating Segment Reporting |  |  |  |
Revenue from gold and silver sales | 334 | 1,219 | 1,643 | 5,690
Gross profit (loss) | (1,285) | (1,153) | (8,359) | (3,793)
Advanced projects - Other | (1,160) | (1,872) | (3,135) | (3,338)
Segment income (loss) | (2,445) | (3,021) | (11,494) | (7,145)
Capital expenditures | 2,827 |  | 2,827 |
MSC |  |  |  |
Operating Segment Reporting |  |  |  |
Income (loss) from investment in Minera Santa Cruz S.A. | 758 | (2,650) | 2,149 | (5,077)
Segment income (loss) | 758 | (2,650) | 2,149 | (5,077)
Los Azules |  |  |  |
Operating Segment Reporting |  |  |  |
Advanced projects - Other | (7,623) | (1,036) | (31,460) | (1,036)
Segment income (loss) | (7,764) | (1,036) | (32,089) | (2,720)
Capital expenditures | 159 |  | 544 |
Other |  |  |  |
Operating Segment Reporting |  |  |  |
Advanced projects - Other | (1,194) | (2,977) | (3,414) | (5,599)
Gold and silver sales |  |  |  |
Operating Segment Reporting |  |  |  |
Revenue from gold and silver sales | 10,208 | 37,129 | 66,397 | 101,575
Product [Member] |  |  |  |
Operating Segment Reporting |  |  |  |
Production costs applicable to sales | (20,172) | (30,760) | (70,939) | (85,481)
Product [Member] | United States Reportable Segment [Member] |  |  |  |
Operating Segment Reporting |  |  |  |
Production costs applicable to sales | (12,357) | (18,753) | (34,834) | (53,376)
Product [Member] | Canada |  |  |  |
Operating Segment Reporting |  |  |  |
Production costs applicable to sales | (6,196) | (9,635) | (26,103) | (22,622)
Product [Member] | Mexico Reportable Segment [Member] |  |  |  |
Operating Segment Reporting |  |  |  |
Production costs applicable to sales | (1,619) | (2,372) | (10,002) | (9,483)
Exploration |  |  |  |
Operating Segment Reporting |  |  |  |
Production costs applicable to sales | (3,929) | (6,245) | (11,432) | (18,117)
Exploration | United States Reportable Segment [Member] |  |  |  |
Operating Segment Reporting |  |  |  |
Production costs applicable to sales | (1,055) | (1,432) | (3,747) | (3,887)
Exploration | Canada |  |  |  |
Operating Segment Reporting |  |  |  |
Production costs applicable to sales | (2,733) | (4,817) | (7,056) | (12,532)
Exploration | Mexico Reportable Segment [Member] |  |  |  |
Operating Segment Reporting |  |  |  |
Production costs applicable to sales |  | $ 4 |  | (14)
Exploration | Los Azules |  |  |  |
Operating Segment Reporting |  |  |  |
Production costs applicable to sales | $ (141) |  | $ (629) | $ (1,684)

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