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Income and Mining Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Income Tax Contingency [Line Items] |  |  |
Foreign Exchange Income Tax Expense (Benefit) | $ 5,600 |  |
Income Tax Expense (Benefit) | 11,046 | $ 2,106 |
Unrecognized Tax Benefits | 18,700 |  | $ 19,600
Income Tax Examination, Penalties and Interest Expense | 8,700 |  | $ 8,700
Minimum [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Decrease in Unrecognized Tax Benefits is Reasonably Possible | 2,500 |  |
Maximum [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Decrease in Unrecognized Tax Benefits is Reasonably Possible | 3,500 |  |
Joaquin Project - Argentina [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Income Tax Expense (Benefit) | $ 1,800 |  |

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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition Amount of current and deferred foreign income tax expense (benefit) attributable to income (loss) from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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