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Income and Mining Taxes (Details 5) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Income Tax Examination [Line Items] |  |
Valuation allowance | $ 409,883 us-gaap_DeferredTaxAssetsValuationAllowance | $ 289,378 us-gaap_DeferredTaxAssetsValuationAllowance
United States [Member] |  |
Income Tax Examination [Line Items] |  |
Valuation allowance | 305,534 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = country_US | 236,653 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = country_US
Argentina [Member] |  |
Income Tax Examination [Line Items] |  |
Valuation allowance | 21,520 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = country_AR | 17,005 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = country_AR
Canada [Member] |  |
Income Tax Examination [Line Items] |  |
Valuation allowance | 2,009 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = country_CA | 4,453 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = country_CA
Bolivia [Member] |  |
Income Tax Examination [Line Items] |  |
Valuation allowance | 15,948 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = country_BO | 0 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = country_BO
Mexico [Member] |  |
Income Tax Examination [Line Items] |  |
Valuation allowance | 33,189 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = country_MX | 0 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = country_MX
New Zealand [Members] |  |
Income Tax Examination [Line Items] |  |
Valuation allowance | 28,710 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = country_NZ | 27,292 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = country_NZ
Other [Member] |  |
Income Tax Examination [Line Items] |  |
Valuation allowance | $ 2,973 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = cde_OtherCountriesMember | $ 3,975 us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_IncomeTaxAuthorityAxis = cde_OtherCountriesMember

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + 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 (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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