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Income and Mining Taxes (Details 4) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Deferred tax liabilities:    
Mineral properties $ 0cde_DeferredTaxLiabilitiesMineralProperties $ 344,152cde_DeferredTaxLiabilitiesMineralProperties
Mexican mining royalty tax 7,586cde_DeferredTaxLiabilitiesForeignRoyaltyTax 76,386cde_DeferredTaxLiabilitiesForeignRoyaltyTax
Foreign subsidiaries — unremitted earnings 45,249us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings 182,464us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings
Inventory 1,100us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts 2,746us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts
Property, plant, and equipment, net 0us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment 33,094us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Deferred Tax Liabilities, Net 53,935us-gaap_DeferredTaxLiabilities 638,842us-gaap_DeferredTaxLiabilities
Deferred tax assets:    
Net operating loss carryforwards 153,689us-gaap_DeferredTaxAssetsOperatingLossCarryforwards 130,170us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Deferred Tax Assets Mineral Properties 70,510cde_DeferredTaxAssetsMineralProperties 0cde_DeferredTaxAssetsMineralProperties
Deferred Tax Assets, Property, Plant and Equipment 46,042us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment 0us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment
Foreign subsidiaries — future tax credits 0us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign 163,947us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign
Royalty and other long-term debt 5,863cde_DeferredTaxAssetsRoyaltyAndOtherLongTermDebt 11,616cde_DeferredTaxAssetsRoyaltyAndOtherLongTermDebt
Capital loss carryforwards 35,251us-gaap_DeferredTaxAssetsCapitalLossCarryforwards 34,930us-gaap_DeferredTaxAssetsCapitalLossCarryforwards
Asset retirement obligation 21,586us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations 18,589us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations
Unrealized foreign currency loss and other 8,213cde_DeferredTaxAssetsUnrealizedForeignCurrencyLossAndOther 9,567cde_DeferredTaxAssetsUnrealizedForeignCurrencyLossAndOther
Accrued expenses 14,773us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities 14,756us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
Tax credit carryforwards 56,322cde_TaxCreditCarryforwards 23,585cde_TaxCreditCarryforwards
Deferred Tax Assets, Gross 412,249us-gaap_DeferredTaxAssetsGross 407,160us-gaap_DeferredTaxAssetsGross
Valuation allowance (409,883)us-gaap_DeferredTaxAssetsValuationAllowance (289,378)us-gaap_DeferredTaxAssetsValuationAllowance
Deferred Tax Assets, Net of Valuation Allowance 2,366us-gaap_DeferredTaxAssetsNet 117,782us-gaap_DeferredTaxAssetsNet
Net deferred tax liabilities $ (51,569)us-gaap_DeferredTaxAssetsLiabilitiesNet $ (521,060)us-gaap_DeferredTaxAssetsLiabilitiesNet