v2.4.1.9

Goodwill and Other Intangible Assets - Changes in Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Definite-lived intangible assets

Beginning balance

$ 199,500us-gaap_FiniteLivedIntangibleAssetsNet

^[1]

Amortization

(40,622)us-gaap_AmortizationOfIntangibleAssets

(33,147)us-gaap_AmortizationOfIntangibleAssets

(23,468)us-gaap_AmortizationOfIntangibleAssets

Ending balance

481,666us-gaap_FiniteLivedIntangibleAssetsNet

199,500us-gaap_FiniteLivedIntangibleAssetsNet

^[1]

Indefinite-lived intangible assets

Beginning balance

206,744us-gaap_IntangibleAssetsNetExcludingGoodwill

^[1],[2]

241,950us-gaap_IntangibleAssetsNetExcludingGoodwill

Acquisitions

344,599wex_IntangibleAssetsAcquiredDuringPeriod

10,341wex_IntangibleAssetsAcquiredDuringPeriod

^[1]

Transfer from indefinite-lived intangible assets to definite-lived intangible assets

0wex_TransferbetweenIndefinitelivedIntangibleAssetstoDefinitelivedIntangibleAssets

Disposals

(5,171)wex_IntangibleAssetsDisposedduringPeriod

Impacts of Foreign Currency Translation

(7,505)wex_IntangibleAssetExcludingGoodwillForeignCurrencyTranslationAdjustment

(12,400)wex_IntangibleAssetExcludingGoodwillForeignCurrencyTranslationAdjustment

Ending balance

498,045us-gaap_IntangibleAssetsNetExcludingGoodwill

206,744us-gaap_IntangibleAssetsNetExcludingGoodwill

^[1],[2]

241,950us-gaap_IntangibleAssetsNetExcludingGoodwill

Acquired software and developed technology

Definite-lived intangible assets

Beginning balance

61,590us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember

^[1],[2]

71,343us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember

^[1]

Acquisitions

70,000us-gaap_FinitelivedIntangibleAssetsAcquired1
/ wex_IntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember

^[2]

826us-gaap_FinitelivedIntangibleAssetsAcquired1
/ wex_IntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember

^[1]

Amortization

(10,091)us-gaap_AmortizationOfIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember

^[2]

(8,417)us-gaap_AmortizationOfIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember

^[1]

Disposals

0wex_FinitelivedIntangibleAssetsDisposedduringPeriod
/ wex_IntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember

^[2]

Transfer from indefinite-lived intangible assets to definite-lived intangible assets

0wex_TransfertoDefinitelivedIntangibleAssetsfromIndefinitelivedIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember

^[1]

Impacts of Foreign Currency Translation

(1,990)wex_FiniteLivedIntangibleAssetForeignCurrencyTranslationAdjustment
/ wex_IntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember

^[2]

(2,162)wex_FiniteLivedIntangibleAssetForeignCurrencyTranslationAdjustment
/ wex_IntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember

^[1]

Ending balance

119,509us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember

^[2]

61,590us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= wex_AcquiredSoftwareandDevelopedTechnologyMember

^[1],[2]

Customer relationships

Definite-lived intangible assets

Beginning balance

127,403us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember

^[1],[2]

150,290us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember

^[1]

Acquisitions

218,720us-gaap_FinitelivedIntangibleAssetsAcquired1
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember

^[2]

9,515us-gaap_FinitelivedIntangibleAssetsAcquired1
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember

^[1]

Amortization

(28,575)us-gaap_AmortizationOfIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember

^[2]

(23,552)us-gaap_AmortizationOfIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember

^[1]

Disposals

(3,727)wex_FinitelivedIntangibleAssetsDisposedduringPeriod
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember

^[2]

Transfer from indefinite-lived intangible assets to definite-lived intangible assets

0wex_TransfertoDefinitelivedIntangibleAssetsfromIndefinitelivedIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember

^[1]

Impacts of Foreign Currency Translation

(3,997)wex_FiniteLivedIntangibleAssetForeignCurrencyTranslationAdjustment
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember

^[2]

(8,850)wex_FiniteLivedIntangibleAssetForeignCurrencyTranslationAdjustment
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember

^[1]

Ending balance

309,824us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember

^[2]

127,403us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember

^[1],[2]

Licensing agreements

Definite-lived intangible assets

Beginning balance

0us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember

^[2]

Acquisitions

36,979us-gaap_FinitelivedIntangibleAssetsAcquired1
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember

Amortization

(390)us-gaap_AmortizationOfIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember

Disposals

0wex_FinitelivedIntangibleAssetsDisposedduringPeriod
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember

Impacts of Foreign Currency Translation

(874)wex_FiniteLivedIntangibleAssetForeignCurrencyTranslationAdjustment
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember

Ending balance

35,715us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_LicensingAgreementsMember

Patent

Definite-lived intangible assets

Beginning balance

1,672us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember

^[1],[2]

2,365us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember

Amortization

(380)us-gaap_AmortizationOfIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember

(465)us-gaap_AmortizationOfIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember

Disposals

0wex_FinitelivedIntangibleAssetsDisposedduringPeriod
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember

Transfer from indefinite-lived intangible assets to definite-lived intangible assets

0wex_TransfertoDefinitelivedIntangibleAssetsfromIndefinitelivedIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember

Impacts of Foreign Currency Translation

(47)wex_FiniteLivedIntangibleAssetForeignCurrencyTranslationAdjustment
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember

(228)wex_FiniteLivedIntangibleAssetForeignCurrencyTranslationAdjustment
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember

Ending balance

1,245us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember

1,672us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember

^[1],[2]

Trade name

Definite-lived intangible assets

Beginning balance

8,835us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember

^[1],[2]

7,407us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember

^[1]

Acquisitions

7,900us-gaap_FinitelivedIntangibleAssetsAcquired1
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember

^[2]

0us-gaap_FinitelivedIntangibleAssetsAcquired1
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember

^[1]

Amortization

(1,186)us-gaap_AmortizationOfIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember

^[2]

(713)us-gaap_AmortizationOfIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember

^[1]

Disposals

0wex_FinitelivedIntangibleAssetsDisposedduringPeriod
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember

^[2]

Transfer from indefinite-lived intangible assets to definite-lived intangible assets

2,421wex_TransfertoDefinitelivedIntangibleAssetsfromIndefinitelivedIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember

^[1]

Impacts of Foreign Currency Translation

(176)wex_FiniteLivedIntangibleAssetForeignCurrencyTranslationAdjustment
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember

^[2]

(280)wex_FiniteLivedIntangibleAssetForeignCurrencyTranslationAdjustment
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember

^[1]

Ending balance

15,373us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember

^[2]

8,835us-gaap_FiniteLivedIntangibleAssetsNet
/ wex_IntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember

^[1],[2]

Trademarks, trade names and brand names

Indefinite-lived intangible assets

Beginning balance

7,244us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
/ wex_IntangibleAssetsByMajorClassAxis
= wex_TrademarksTradeNamesAndBrandNamesMember

^[1],[2]

10,545us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
/ wex_IntangibleAssetsByMajorClassAxis
= wex_TrademarksTradeNamesAndBrandNamesMember

Acquisitions

11,000us-gaap_IndefinitelivedIntangibleAssetsAcquired
/ wex_IntangibleAssetsByMajorClassAxis
= wex_TrademarksTradeNamesAndBrandNamesMember

0us-gaap_IndefinitelivedIntangibleAssetsAcquired
/ wex_IntangibleAssetsByMajorClassAxis
= wex_TrademarksTradeNamesAndBrandNamesMember

Disposals

(1,444)us-gaap_IndefiniteLivedIntangibleAssetsWrittenOffRelatedToSaleOfBusinessUnit
/ wex_IntangibleAssetsByMajorClassAxis
= wex_TrademarksTradeNamesAndBrandNamesMember

Transfer from indefinite-lived intangible assets to definite-lived intangible assets

(2,421)wex_TransferfromIndefinitelivedIntangibleAssetstoDefinitelivedIntangibleAssets
/ wex_IntangibleAssetsByMajorClassAxis
= wex_TrademarksTradeNamesAndBrandNamesMember

Impacts of Foreign Currency Translation

(421)us-gaap_IndefiniteLivedIntangibleAssetsTranslationAndPurchaseAccountingAdjustments
/ wex_IntangibleAssetsByMajorClassAxis
= wex_TrademarksTradeNamesAndBrandNamesMember

(880)us-gaap_IndefiniteLivedIntangibleAssetsTranslationAndPurchaseAccountingAdjustments
/ wex_IntangibleAssetsByMajorClassAxis
= wex_TrademarksTradeNamesAndBrandNamesMember

Ending balance

$ 16,379us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
/ wex_IntangibleAssetsByMajorClassAxis
= wex_TrademarksTradeNamesAndBrandNamesMember

$ 7,244us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
/ wex_IntangibleAssetsByMajorClassAxis
= wex_TrademarksTradeNamesAndBrandNamesMember

^[1],[2]

[1]	The prior years amounts have been adjusted to reflect changes as a result of finalizing the purchase accounting.
[2]	The prior years amounts have been adjusted to reflect changes as a result of finalizing the purchase accounting

X

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

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-Publisher FASB

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X

- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

+ References

No definition available.

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X

- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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- Definition

Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, resulting from a business combination.

+ References

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- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

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- Definition

Amount of increase (decrease) of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit, from foreign currency translation and purchase accounting adjustments.

+ References

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X

- Definition

Amount of write-off of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit associated with the sale of all or a portion of a reporting unit.

+ References

No definition available.

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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- Definition

Finite Lived Intangible Asset Foreign Currency Translation Adjustment.

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- Definition

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- Definition

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