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Segment Information - Reconciliation of Adjusted Net Income to Net Income (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
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Mar. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Segment Reporting [Abstract] | ||||
| Adjusted pre-tax income before NCI | $ 289,259wex_AdjustedNetIncome | $ 286,983wex_AdjustedNetIncome | $ 262,788wex_AdjustedNetIncome | |
| Net unrealized loss (gain) on derivative instruments | 48,327us-gaap_UnrealizedGainLossOnDerivatives | (5,628)us-gaap_UnrealizedGainLossOnDerivatives | (1,724)us-gaap_UnrealizedGainLossOnDerivatives | |
| Amortization of acquired intangible assets | (40,622)us-gaap_AmortizationOfIntangibleAssets | (33,147)us-gaap_AmortizationOfIntangibleAssets | (23,468)us-gaap_AmortizationOfIntangibleAssets | |
| Stock-based compensation | (13,790)us-gaap_AllocatedShareBasedCompensationExpense | (9,429)us-gaap_AllocatedShareBasedCompensationExpense | (11,016)us-gaap_AllocatedShareBasedCompensationExpense | |
| Goodwill impairment | 0us-gaap_GoodwillImpairmentLoss | 0us-gaap_GoodwillImpairmentLoss | (17,508)us-gaap_GoodwillImpairmentLoss | |
| Deferred loan costs associated with the extinguishment of debt | (1,000)us-gaap_WriteOffOfDeferredDebtIssuanceCost | 0us-gaap_WriteOffOfDeferredDebtIssuanceCost | (1,004)us-gaap_WriteOffOfDeferredDebtIssuanceCost | 0us-gaap_WriteOffOfDeferredDebtIssuanceCost |
| Non-cash adjustments related to tax receivable agreement | (1,331)wex_IncreaseDecreaseInAmountDueUnderTaxReceivableAgreement | (33)wex_IncreaseDecreaseInAmountDueUnderTaxReceivableAgreement | (2,089)wex_IncreaseDecreaseInAmountDueUnderTaxReceivableAgreement | |
| Change in tax refund due to former shareholders of RD Card Holdings Australia | 0wex_DecreaseInTaxRefundDueToFormerShareholders | 0wex_DecreaseInTaxRefundDueToFormerShareholders | 9,750wex_DecreaseInTaxRefundDueToFormerShareholders | |
| Gain on divestiture | 27,490us-gaap_GainOrLossOnSaleOfStockInSubsidiary | 0us-gaap_GainOrLossOnSaleOfStockInSubsidiary | 0us-gaap_GainOrLossOnSaleOfStockInSubsidiary | |
| Expenses and adjustments related to acquisitions | 7,694wex_BusinessCombinationAcquisitionRelatedCostsandAdjustments | (658)wex_BusinessCombinationAcquisitionRelatedCostsandAdjustments | 10,550wex_BusinessCombinationAcquisitionRelatedCostsandAdjustments | |
| Income before income taxes | $ 301,639us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | $ 238,400us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | $ 206,183us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | |
| X | ||||||||||
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- Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of gain (loss) on sale or disposal of equity in securities of subsidiaries. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Adjusted net income. No definition available.
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| X | ||||||||||
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- Definition
Business Combination, Acquisition Related Costs and Adjustments No definition available.
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| X | ||||||||||
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- Definition
Decrease In Tax Refund Due To Former Shareholders No definition available.
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| X | ||||||||||
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- Definition
Changes in our tax receivable liability. No definition available.
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