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Commitments and Contigencies (Details Textual) (USD $) | 0 Months Ended | 3 Months Ended | 0 Months Ended |
--- | --- | --- | --- | ---
Jan. 21, 2009 | Mar. 31, 2015 oz | Mar. 31, 2014 | Oct. 02, 2014 | Oct. 14, 2009 m
Business Acquisition [Line Items] |  |  |  |  |
Price per ounce under agreement |  | $ 412 cde_Priceperounceunderagreement |  |  |
Maximum Height for Temporary Restriction on Mining |  |  |  |  | 4,400 cde_MaximumHeightForTemporaryRestrictionOnMining
NSR royalty percentage |  |  | 3.40%cde_LossContingencySettlementRoyaltyPercentage |  |
NSR royalty maximum amount |  |  | 39,400,000 cde_LossContingencySettlementAgreementMaximumAmount |  |
Percentage of labor force covered by collective bargaining agreements |  | 10.70%cde_PercentageOfLaborForceCoveredByCollectiveBargainingAgreements |  |  |
Purchased royalty | 50.00%cde_SalePortionLifeOfMine |  |  |  |
Royalty agreement minimum obligation for the period |  | 400,000 cde_QuantityOfGoldOnWhichMonthlyMinimumObligationToBePaid |  |  |
Royalty Agreement Minimum Obligation for Per Month |  | 4,167 cde_RoyaltyAgreementMinimumObligationForPerMonth |  |  |
Royalty Agreement Period | 8 years |  |  |  |
Rochester [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Royalty expenses |  | 0 cde_RoyaltyExpenses / us-gaap_BusinessAcquisitionAxis = cde_RochesterMember |  |  |
Gold price per ounce for maximum royalty range |  | 23.60 cde_GoldPricePerOunceForMaximumRoyaltyRange / us-gaap_BusinessAcquisitionAxis = cde_RochesterMember |  |  |
Maximum royalty payable |  | 250,000 us-gaap_RoyaltyGuaranteesCommitmentsAmount / us-gaap_BusinessAcquisitionAxis = cde_RochesterMember |  |  |
Maximum royalty range for gold price per ounce |  | 5.00%cde_MaximumRoyaltyRangeForGoldPricePerOunce / us-gaap_BusinessAcquisitionAxis = cde_RochesterMember |  |  |
Palmarejo gold production royalty [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Termination payment |  |  |  | 2,000,000 cde_ExistingGoldStreamTerminationPayment / us-gaap_DerivativeInstrumentRiskAxis = cde_PalmarejogoldstreamagreementMember |
Production to be sold, percent |  |  |  | 50.00%cde_LifeOfMineProductionPercentage / us-gaap_DerivativeInstrumentRiskAxis = cde_PalmarejogoldstreamagreementMember |
Price per ounce under agreement |  |  |  | 800 cde_Priceperounceunderagreement / us-gaap_DerivativeInstrumentRiskAxis = cde_PalmarejogoldstreamagreementMember |
Aggregate deposit to be received |  | $ 5,000,000 cde_Deposittobereceivedundergoldstreamagreement / us-gaap_DerivativeInstrumentRiskAxis = cde_PalmarejogoldstreamagreementMember |  | $ 22,000,000 cde_Deposittobereceivedundergoldstreamagreement / us-gaap_DerivativeInstrumentRiskAxis = cde_PalmarejogoldstreamagreementMember |
Rochester Royalty Obligation [Member] | Maximum [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payable ounces under royalty obligation |  | 6,100,000 cde_Payableouncesunderroyaltyobligation / us-gaap_DerivativeInstrumentRiskAxis = cde_RochesterRoyaltyObligationMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |
Remaining ounces under royalty obligation |  | 33,300,000 cde_Remainingouncesunderroyaltyobligation / us-gaap_DerivativeInstrumentRiskAxis = cde_RochesterRoyaltyObligationMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |

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