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Significant Accounting Policies - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2015 USD ($)
Significant Accounting Policies [Line Items] |
Minimum likelihood for the realization in order to recognize tax benefit from uncertain tax positions | 50.00%
Leach pad production cycles project recoveries, minimum percentage of the placed recoverable ounces in the first year of leaching | 50.00%
Leach pad production cycles project recoveries, maximum percentage of the placed recoverable ounces in the first year of leaching | 70.00%
Contracts for sales of copper concentrate provisional price, final adjustment period, minimum number of days after delivery | 30 days
Contracts for sales of copper concentrate provisional price, final adjustment period, maximum number of days after delivery | 90 days
Reclassified as Non-Current |
Significant Accounting Policies [Line Items] |
Current deferred income and mining tax assets | $ 6.9
Current deferred income and mining tax liabilities | $ 10.3

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- Definition The maximum number of days after delivery that the selling price of copper concentrate sales are final, after the final adjustments based on the market prices at the relevant quotation points stipulated in the contract. + References No definition available. + Details
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- Definition The maximum percentage of the placed recoverable ounces in the first year of leaching. + References No definition available. + Details
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- Definition The minimum percentage of the placed recoverable ounces in the first year of leaching. + References No definition available. + Details
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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31931-109318 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31928-109318 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31958-109318 + Details
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