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Derivative Instruments - Location and Amounts of Derivative Fair Values in Condensed Consolidated Balance Sheets (Details) (Commodity Contract, Fuel price derivatives, at fair value, Derivatives not designated as hedging instruments, USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2014
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Dec. 31, 2013
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Commodity Contract | Fuel price derivatives, at fair value | Derivatives not designated as hedging instruments
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| Derivatives, Fair Value [Line Items] | ||
| Asset Derivatives | $ 40,969us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityContractMember / wex_DerivativesFairValueNetByBalanceSheetLocationAxis = wex_FuelPriceDerivativesAtFairValueMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember |
$ 0us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityContractMember / wex_DerivativesFairValueNetByBalanceSheetLocationAxis = wex_FuelPriceDerivativesAtFairValueMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember |
| Liability Derivatives | $ 0us-gaap_DerivativeAssetFairValueGrossLiability / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityContractMember / wex_DerivativesFairValueNetByBalanceSheetLocationAxis = wex_FuelPriceDerivativesAtFairValueMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember |
$ 7,358us-gaap_DerivativeAssetFairValueGrossLiability / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_CommodityContractMember / wex_DerivativesFairValueNetByBalanceSheetLocationAxis = wex_FuelPriceDerivativesAtFairValueMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember |
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- Definition
Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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