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Acquisitions (Details) (USD $) | 0 Months Ended | 12 Months Ended | 0 Months Ended |
--- | --- | --- | --- | ---
Dec. 17, 2014 | Jul. 02, 2014 | May 27, 2014 | Apr. 16, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Jul. 02, 2014 | Dec. 13, 2013
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Shares Issued for Acquisition |  |  |  | 11,572,918 cde_SharesIssuedforAcquisition |  |  |  |  |
Share Price for Acquisition |  |  |  | $ 14,980 cde_SharePriceforAcquisition |  |  |  |  |
Business Acquisition, Effective Date of Acquisition | Dec. 16, 2014 | Jul. 02, 2014 | May 27, 2014 | Apr. 16, 2013 |  |  |  |  |
Sale of Stock, Percentage of Ownership after Transaction | 20.16%us-gaap_SaleOfStockPercentageOfOwnershipAfterTransaction |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross | $ 8,500,000 us-gaap_PaymentsToAcquireBusinessesGross |  |  |  |  |  |  |  |
Payments to Acquire Royalty Interests in Mining Properties |  |  | 2,200,000 us-gaap_PaymentsToAcquireRoyaltyInterestsInMiningProperties |  | 48,395,000 us-gaap_PaymentsToAcquireRoyaltyInterestsInMiningProperties | 57,034,000 us-gaap_PaymentsToAcquireRoyaltyInterestsInMiningProperties | 74,734,000 us-gaap_PaymentsToAcquireRoyaltyInterestsInMiningProperties |  |
La Preciosa Net Smelter Royalty |  |  | 1.25%cde_BusinessCombinationNetSmelterRoyalty |  |  |  |  |  |
Acquisition Costs, Period Cost |  |  |  |  |  | 1,500,000 us-gaap_AcquisitionCosts |  |  |
Payments for Royalties |  |  | 1,800,000 us-gaap_PaymentsForRoyalties |  | 4,000,000 us-gaap_PaymentsForRoyalties |  |  |  |
Business Acquisition, Date of Acquisition Agreement |  |  | Sep. 02, 2014 |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  |  | 295,841,000 us-gaap_BusinessCombinationConsiderationTransferred1 |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Noncurrent |  |  |  |  |  |  |  |  | 8,605,000 us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities |  |  |  | 116,955,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities |  |  |  |  | 26,047,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Business Combination, Consideration Transferred, Cost of Acquired Entity |  |  |  | 412,796,000 cde_BusinessCombinationConsiderationTransferredCostofAcquiredEntity |  |  |  |  | 34,652,000 cde_BusinessCombinationConsiderationTransferredCostofAcquiredEntity
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets |  |  |  | 412,796,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets |  |  |  |  | 34,652,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
Warrants Issued for Acquisition |  |  |  | 1,588,768 cde_WarrantsIssuedforAcquisition |  |  |  |  |
Warrant Price for Acquisition |  |  |  | $ 3,640 cde_WarrantPriceforAcquisition |  |  |  |  |
Paramount Gold & Silver [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Description | 0.049 |  |  |  |  |  |  |  |
La Preciosa Net Smelter Royalty | 0.70%cde_BusinessCombinationNetSmelterRoyalty / us-gaap_BusinessAcquisitionAxis = cde_ParamountGoldSilverMember |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | 5,300,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = cde_ParamountGoldSilverMember |  |  |  |  |  |  |  |
La Preciosa [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
La Preciosa Net Smelter Royalty |  |  |  |  |  |  |  | 3.00%cde_BusinessCombinationNetSmelterRoyalty / us-gaap_BusinessAcquisitionAxis = cde_LaPreciosaMember |
Business Combination, Consideration Transferred |  |  |  |  |  |  |  | $ 12,000,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = cde_LaPreciosaMember |

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- Definition Shares Issued for Acquisition + References No definition available. + Details
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- Definition The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph c -Subparagraph 3(ii)(A) -Article 4 + Details
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- Definition Date when the business acquisition agreement was executed, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e845-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Acquisition Date -URI http://asc.fasb.org/extlink&oid=6919109 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e848-128460 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 + Details
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- Definition Amount of assets acquired at the acquisition date. + 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=39739317&loc=d3e4845-128472 + Details
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- Definition Amount of liabilities assumed at the acquisition date. + 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=39739317&loc=d3e4845-128472 + Details
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- Definition In a business combination achieved in stages, this element represents a narrative description of the history, developments, or effect of the acquisition relative to the percentage of equity in the acquiree held by the acquirer immediately before the acquisition date. Such description may describe any gain recognized as a result of the acquisition. + References No definition available. + Details
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- Definition The amount of cash paid for royalties during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow from the purchase of royalty interests in mining properties is the amount of cash the mineral producer pays the owner of the mine or mineral resource. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction. + References No definition available. + Details
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- Details
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