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INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE - Changes in Company's Investment in MSC (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Change in the investment in MSC |  |  |  |  |
Investment in MSC, beginning of period |  |  | $ 127,814 |  |
Income tax recovery | $ (501) | $ (2,140) | (383) | $ (3,278) |
Dividend distribution received |  |  | (2,020) | (7,231) |
Investment in MSC, end of period | 119,347 |  | 119,347 |  | $ 127,814
MSC |  |  |  |  |
Change in the investment in MSC |  |  |  |  |
Investment in MSC, beginning of period |  |  | 127,814 | 150,064 | 150,064
Attributable net loss from MSC | (1,784) | (3,773) | (3,142) | (3,343) | (10,065)
Amortization of fair value increments | (2,459) | (2,482) | (4,372) | (4,597) | (9,730)
Income tax recovery | 106 | $ 3,990 | 1,067 | $ 5,463 | 7,930
Dividend distribution received |  |  | (2,020) |  | (10,385)
Investment in MSC, end of period | $ 119,347 |  | $ 119,347 |  | $ 127,814

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