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INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE - Assets and Liabilities Associated with MSC (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE |  |
Current assets | $ 78,574 | $ 54,443
Total assets | 498,318 | 475,085
Current liabilities | 20,581 | 22,039
Total liabilities | 55,279 | $ 56,793
MSC |  |
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE |  |
Current assets | 108,900 |
Total assets | 468,300 |
Current liabilities | 59,500 |
Total liabilities | 137,000 |
MSC | Current Period Values Excluding Fair Value Increments And Impairment Charge |  |
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE |  |
Current assets | 107,900 |
Total assets | 288,900 |
Current liabilities | 63,600 |
Total liabilities | $ 88,600 |

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