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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 | 12 Months Ended |  |
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Jan. 24, 2012
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE |  |  |  |  |
Income taxes recovery | $ 3,749 | $ 24,560 | $ 107,170 |  |
Income (loss) from investment in MSC, net of amortization | $ 12,951 | $ 2,414 | $ (5,284) |  |
Corporate Venture |  |  |  |  |
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE |  |  |  |  |
Ownership interest (as a percent) | 100.00% | 100.00% | 100.00% |  |
MSC |  |  |  |  |
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE |  |  |  |  |
Net sales | $ 235,961 | $ 186,095 | $ 213,013 |  |
Production costs applicable to sales | (173,679) | (158,615) | (173,274) |  |
Net income (loss) | $ 31,976 | $ (5,835) | $ (5,300) |  |
Ownership interest (as a percent) | 49.00% | 49.00% | 49.00% | 49.00% | 49.00%
Net income (loss) | $ 15,961 | $ (2,859) | $ (2,597) |  |
Amortization of fair value increments | 12,274 | 10,669 | 13,190 |  |
Income taxes recovery | (9,264) | (15,942) | (10,503) |  |
Income (loss) from investment in MSC, net of amortization | $ 12,951 | $ 2,414 | $ (5,284) |  |

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