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Derivative Financial Instruments (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Revenue | $ 152,956 us-gaap_RevenueMineralSales |  | $ 159,633 us-gaap_RevenueMineralSales |
Costs applicable to sales | 115,062 us-gaap_CostOfGoodsSold | [1] | 106,896 us-gaap_CostOfGoodsSold | [1]
Fair value adjustments, net | (4,884)us-gaap_GainLossOnDerivativeInstrumentsNetPretax |  | (11,436)us-gaap_GainLossOnDerivativeInstrumentsNetPretax |
Fair value adjustments, net | (1,677)us-gaap_GainLossOnDerivativeInstrumentsHeldForTradingPurposesNet |  | (10,808)us-gaap_GainLossOnDerivativeInstrumentsHeldForTradingPurposesNet |
Concentrate Sales Contracts [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Unrealized Gain (Loss) on Derivatives | 914 us-gaap_UnrealizedGainLossOnDerivatives / us-gaap_DerivativeInstrumentRiskAxis = cde_ConcentrateSalesContractsMember |  | 879 us-gaap_UnrealizedGainLossOnDerivatives / us-gaap_DerivativeInstrumentRiskAxis = cde_ConcentrateSalesContractsMember |
Forward foreign exchange contract [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Costs applicable to sales | 0 us-gaap_CostOfGoodsSold / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember |  | (924)us-gaap_CostOfGoodsSold / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember |
Fair value adjustments, net | 0 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember |  | 968 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember |
Mexican peso forward purchase contracts [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Fair value adjustments, net | 0 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / us-gaap_DerivativeInstrumentRiskAxis = cde_MexicanPesoForwardPurchaseContractsMember |  | 968 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / us-gaap_DerivativeInstrumentRiskAxis = cde_MexicanPesoForwardPurchaseContractsMember |
Palmarejo gold production royalty [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Fair value adjustments, net | (1,545)us-gaap_GainLossOnDerivativeInstrumentsNetPretax / us-gaap_DerivativeInstrumentRiskAxis = cde_PalmarejoGoldProductionRoyaltyMember |  | (10,237)us-gaap_GainLossOnDerivativeInstrumentsNetPretax / us-gaap_DerivativeInstrumentRiskAxis = cde_PalmarejoGoldProductionRoyaltyMember |
Silver and gold options [Member] |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Unrealized Gain (Loss) on Derivatives | 200 us-gaap_UnrealizedGainLossOnDerivatives / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityOptionMember |  | (1,494)us-gaap_UnrealizedGainLossOnDerivatives / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityOptionMember |
Fair value adjustments, net | $ (1,046)us-gaap_GainLossOnDerivativeInstrumentsNetPretax / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityOptionMember |  |  |
[1] | Excludes amortization.

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- Definition Total costs related to goods produced and sold during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Aggregate net gain and losses (whether realized or unrealized) on all derivative instruments held for trading purposes whether or not settled physically. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41322-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4F -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624186-113959 + Details
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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959 + Details
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- Definition Aggregate revenue from the sale of minerals and related products, and from rendering services such as exploration, development, mining, processing and providing mining support activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(a),(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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