XML 91 R74.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Commitments and Contigencies (Details Textual) (USD $) | 0 Months Ended | 3 Months Ended |  | 3 Months Ended | 9 Months Ended |  | 3 Months Ended |  | 0 Months Ended | 1 Months Ended | 0 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 21, 2009 | Sep. 30, 2014 oz | Sep. 30, 2013 | Oct. 14, 2009 m | Sep. 30, 2014 Rochester [Member] | Sep. 30, 2013 Rochester [Member] | Sep. 30, 2013 Rochester [Member] | Jul. 07, 1995 Echo Bay [Member] oz | Sep. 30, 2014 Kensington [Member] | Jul. 07, 1995 Kensington [Member] | Jul. 07, 1995 Coeur Alaska Inc [Member] | Jun. 05, 2012 Hazardous Waste On-Site [Member] Callahan Mining Corporation [Member] defendant | Feb. 28, 2010 Hazardous Waste On-Site [Member] Callahan Mining Corporation [Member] | Oct. 02, 2014 Subsequent Event [Member]
Other Commitments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Litigation Settlement, Expense |  |  | $ 32,000,000 |  |  |  |  |  |  |  |  |  |  |
Termination payment |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000.0
Production to be sold, percent |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00%
Sale of production, price per ounce of gold |  |  |  |  |  |  |  |  |  |  |  |  |  | 800
Aggregate deposit to be received |  |  |  |  |  |  |  |  |  |  |  |  |  | 22,000,000.0
Commitment and Contingencies (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of ownership interest |  |  |  |  |  |  |  | 50.00% |  | 100.00% |  |  |  |
Volume related to net smelter return royalty of future gold production |  |  |  |  |  |  |  | 1,000,000 |  |  |  |  |  |
Purchase price and construction and development expenses |  |  |  |  |  |  |  |  |  |  | 32,500,000 |  |  |
Minimum royalty range for gold price per ounce |  |  |  |  |  |  |  |  | 1.00% |  |  |  |  |
Gold price per ounce for minimum royalty range |  |  |  |  |  |  |  |  | 400 |  |  |  |  |
Maximum royalty range for gold price per ounce |  |  |  |  | 5.00% |  |  |  | 2.50% |  |  |  |  |
Maximum royalty payable |  |  |  |  | 250,000 |  |  |  |  |  |  |  |  |
Gold price per ounce for maximum royalty range |  |  |  |  | 23.60 |  |  |  | 475 |  |  |  |  |
Royalty expenses |  |  |  |  | 0 | 0 | 1,000,000 |  |  |  |  |  |  |
Litigation Settlement, Amount |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  | 3,500,000 |
Number of defendants |  |  |  |  |  |  |  |  |  |  |  | 5 |  |
Maximum Height for Temporary Restriction on Mining |  |  |  | 4,400 |  |  |  |  |  |  |  |  |  |
NSR royalty percentage |  |  | 3.40% |  |  |  |  |  |  |  |  |  |  |
NSR royalty maximum amount |  |  | $ 39,400,000 |  |  |  |  |  |  |  |  |  |  |
Number of labor agreements in South America |  | 1 |  |  |  |  |  |  |  |  |  |  |  |
Percentage of labor force covered by collective bargaining agreements |  | 9.90% |  |  |  |  |  |  |  |  |  |  |  |
Royalty to be capped in terms of ounces of production |  | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Purchased royalty | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Royalty agreement minimum obligation for the period |  | 400,000 |  |  |  |  |  |  |  |  |  |  |  |
Royalty Agreement Minimum Obligation for Per Month |  | 4,167 |  |  |  |  |  |  |  |  |  |  |  |
Royalty Agreement Period | 8 years |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Details
Name: | cde_CommitmentAndContingenciesTextualAbstract
Namespace Prefix: | cde_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disposal Group, Not Including Discontinued Operation, Deposit Received + References No definition available. + Details
Name: | cde_DisposalGroupNotIncludingDiscontinuedOperationDepositReceived
Namespace Prefix: | cde_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Disposal Group, Not Including Discontinued Operation, Production to be Sold, Percent + References No definition available. + Details
Name: | cde_DisposalGroupNotIncludingDiscontinuedOperationProductiontobeSoldPercent
Namespace Prefix: | cde_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disposal Group, Not Including Discontinued Operation, Sale of Production, Price per Ounce + References No definition available. + Details
Name: | cde_DisposalGroupNotIncludingDiscontinuedOperationSaleofProductionPriceperOunce
Namespace Prefix: | cde_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disposal Group, Not Including Discontinued Operation, Termination Payment + References No definition available. + Details
Name: | cde_DisposalGroupNotIncludingDiscontinuedOperationTerminationPayment
Namespace Prefix: | cde_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Gold price per ounce for maximum royalty range. + References No definition available. + Details
Name: | cde_GoldPricePerOunceForMaximumRoyaltyRange
Namespace Prefix: | cde_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Gold price per ounce for minimum royalty range. + References No definition available. + Details
Name: | cde_GoldPricePerOunceForMinimumRoyaltyRange
Namespace Prefix: | cde_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loss Contingency, Settlement Agreement, Maximum Amount + References No definition available. + Details
Name: | cde_LossContingencySettlementAgreementMaximumAmount
Namespace Prefix: | cde_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loss Contingency, Settlement, Royalty Percentage + References No definition available. + Details
Name: | cde_LossContingencySettlementRoyaltyPercentage
Namespace Prefix: | cde_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum height for temporary restriction on mining. + References No definition available. + Details
Name: | cde_MaximumHeightForTemporaryRestrictionOnMining
Namespace Prefix: | cde_
Data Type: | num:lengthItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maximum royalty range for gold price per ounce. + References No definition available. + Details
Name: | cde_MaximumRoyaltyRangeForGoldPricePerOunce
Namespace Prefix: | cde_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum royalty range for gold price per ounce. + References No definition available. + Details
Name: | cde_MinimumRoyaltyRangeForGoldPricePerOunce
Namespace Prefix: | cde_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of labor agreements. + References No definition available. + Details
Name: | cde_NumberOfLaborAgreements
Namespace Prefix: | cde_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of labor force covered by collective bargaining agreements. + References No definition available. + Details
Name: | cde_PercentageOfLaborForceCoveredByCollectiveBargainingAgreements
Namespace Prefix: | cde_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Quantity of gold on which monthly minimum obligation to be paid. + References No definition available. + Details
Name: | cde_QuantityOfGoldOnWhichMonthlyMinimumObligationToBePaid
Namespace Prefix: | cde_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | duration

X
- Definition Royalty Agreement Minimum Obligation for Per Month + References No definition available. + Details
Name: | cde_RoyaltyAgreementMinimumObligationForPerMonth
Namespace Prefix: | cde_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Royalty Agreement Period + References No definition available. + Details
Name: | cde_RoyaltyAgreementPeriod
Namespace Prefix: | cde_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Royalty expenses. + References No definition available. + Details
Name: | cde_RoyaltyExpenses
Namespace Prefix: | cde_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Royalty To Be Capped In Terms Of Ounces Of Production. + References No definition available. + Details
Name: | cde_RoyaltyToBeCappedInTermsOfOuncesOfProduction
Namespace Prefix: | cde_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sale portion life of mine. + References No definition available. + Details
Name: | cde_SalePortionLifeOfMine
Namespace Prefix: | cde_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Volume Related To Net Smelter Return Royalty Of Future Gold Production. + References No definition available. + Details
Name: | cde_VolumeRelatedToNetSmelterReturnRoyaltyOfFutureGoldProduction
Namespace Prefix: | cde_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | instant

X
- Definition The capitalized costs incurred (excluded from amortization), as of the date of the balance sheet, 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 + Details
Name: | us-gaap_AcquisitionCostsCumulative
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of judgment or settlement awarded to (against) the entity in respect of litigation. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of defendants named in a legal action. + References No definition available. + Details
Name: | us-gaap_LossContingencyNumberOfDefendants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount the entity has committed to make for future royalty guarantees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 440 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473578&loc=d3e63223-108013 + Details
Name: | us-gaap_RoyaltyGuaranteesCommitmentsAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant