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Acquisitions (Details) (Wharf Gold Mine [Member], USD $) | 0 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Feb. 20, 2015 | Mar. 31, 2015 | Mar. 31, 2014 | Feb. 20, 2015
Wharf Gold Mine [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Transaction costs |  | $ 2,000,000 us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |
Cash | 103,000,000 us-gaap_PaymentsToAcquireBusinessesGross / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  |
Liabilities assumed: |  |  |  |
Accounts payable and accrued liabilities | 5,412,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 5,412,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Reclamation | 18,270,000 cde_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedAssetReclamationObligation / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 18,270,000 cde_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedAssetReclamationObligation / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Deferred income taxes | 9,503,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 9,503,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Other non-current liabilities | 3,750,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 3,750,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilities / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Total liabilities assumed | 36,935,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 36,935,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Total consideration | 139,935,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  |
Assets acquired: |  |  |  |
Cash | 982,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 982,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Receivables | 3,125,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 3,125,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Inventory | 2,807,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 2,807,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Ore on leach pads | 12,710,000 cde_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOreonLeachPads / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 12,710,000 cde_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOreonLeachPads / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Other current assets | 2,924,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 2,924,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Property, plant, and equipment | 30,054,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 30,054,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Mining properties, net | 83,367,000 cde_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedMiningPropertiesNet / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 83,367,000 cde_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedMiningPropertiesNet / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Other non-current assets | 3,966,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 3,966,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Total assets acquired | 139,935,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |  |  | 139,935,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember
Business Acquisition, Pro Forma Information [Abstract] |  |  |  |
Revenue |  | 170,956,000 us-gaap_BusinessAcquisitionsProFormaRevenue / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember | 178,917,000 us-gaap_BusinessAcquisitionsProFormaRevenue / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |
Income (loss) before income and mining taxes |  | (33,271,000)us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember | (36,673,000)us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |
Net income (loss) |  | $ (33,340,000)us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember | $ (31,957,000)us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss / us-gaap_BusinessAcquisitionAxis = cde_WharfGoldMineMember |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
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