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INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE - Summary of Operating Results from MSC (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE |  |  |
Revenue from gold and silver sales | $ 23,740 | $ 31,400 |
Depreciation and depletion | (5,137) | (6,698) |
Gross Profit | (4,986) | (3,685) |
Net income (loss) before tax | (14,481) | (100,285) |
Net income (loss) | (12,466) | (99,191) |
Income tax recovery | 2,015 | 1,094 |
Loss from investment in MSC, net of amortization | $ (574) | (2,676) |
Subsidiary (as a percent) | 100.00% |  |
Ownership interest (as a percent) | 49.00% |  |
MSC |  |  |
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE |  |  |
Revenue from gold and silver sales | $ 53,303 | 37,390 |
Production costs applicable to sales | (36,367) | (28,316) |
Depreciation and depletion | (6,953) | (7,327) |
Gross Profit | 9,983 | 1,747 |
Exploration | (2,236) | (2,866) |
Other expenses | (5,536) | (2,217) |
Net income (loss) before tax | 2,211 | (3,336) |
Current and deferred tax expense | (1,629) | 49 |
Net income (loss) | 582 | (3,287) |
Net income (loss) | 285 |  | $ 2,745
Amortization of fair value increments | (1,071) |  | (5,390)
Income tax recovery | 212 |  | $ 1,128
Loss from investment in MSC, net of amortization | (574) | (2,676) |
MSC | Equity Method Investment |  |  |
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE |  |  |
Net income (loss) | 285 | (1,611) |
Amortization of fair value increments | (1,071) | (1,385) |
Income tax recovery | $ 212 | $ 320 |
Ownership interest (as a percent) | 49.00% |  |

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- Definition Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62136-109447 + Details
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