XML 74 R62.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Fair Value - Assets and Liabilities Measured at Fair Value and Related Hierarchy Levels (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Assets: |  |
Total available-for-sale securities | $ 24,160 | $ 18,562
Executive deferred compensation plan trust | 5,716 | 5,655
Fuel price derivatives |  | 5,007
Liabilities: |  |
Foreign currency swaps | 9 | 90
Mortgage-backed securities |  |
Assets: |  |
Total available-for-sale securities | 499 | 650
Asset-backed securities |  |
Assets: |  |
Total available-for-sale securities | 688 | 848
Municipal bonds |  |
Assets: |  |
Total available-for-sale securities | 708 | 398
Fixed-income mutual fund |  |
Assets: |  |
Total available-for-sale securities | 22,265 | 16,666
Fuel price derivatives - unleaded fuel |  |
Assets: |  |
Fuel price derivatives |  | 3,083
Fuel price derivatives – diesel |  |
Assets: |  |
Fuel price derivatives |  | 1,924
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Total available-for-sale securities | 22,265 | 16,666
Executive deferred compensation plan trust | 5,716 | 5,655
Fuel price derivatives |  | 0
Liabilities: |  |
Foreign currency swaps | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities |  |
Assets: |  |
Total available-for-sale securities | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Asset-backed securities |  |
Assets: |  |
Total available-for-sale securities | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal bonds |  |
Assets: |  |
Total available-for-sale securities | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fixed-income mutual fund |  |
Assets: |  |
Total available-for-sale securities | 22,265 | 16,666
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fuel price derivatives - unleaded fuel |  |
Assets: |  |
Fuel price derivatives |  | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fuel price derivatives – diesel |  |
Assets: |  |
Fuel price derivatives |  | 0
Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Total available-for-sale securities | 1,895 | 1,896
Executive deferred compensation plan trust | 0 | 0
Fuel price derivatives |  | 3,083
Liabilities: |  |
Foreign currency swaps | 9 | 90
Significant Other Observable Inputs (Level 2) | Mortgage-backed securities |  |
Assets: |  |
Total available-for-sale securities | 499 | 650
Significant Other Observable Inputs (Level 2) | Asset-backed securities |  |
Assets: |  |
Total available-for-sale securities | 688 | 848
Significant Other Observable Inputs (Level 2) | Municipal bonds |  |
Assets: |  |
Total available-for-sale securities | 708 | 398
Significant Other Observable Inputs (Level 2) | Fixed-income mutual fund |  |
Assets: |  |
Total available-for-sale securities | 0 | 0
Significant Other Observable Inputs (Level 2) | Fuel price derivatives - unleaded fuel |  |
Assets: |  |
Fuel price derivatives |  | 3,083
Significant Other Observable Inputs (Level 2) | Fuel price derivatives – diesel |  |
Assets: |  |
Fuel price derivatives |  | 0
Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Total available-for-sale securities | 0 | 0
Executive deferred compensation plan trust | 0 | 0
Fuel price derivatives |  | 1,924
Liabilities: |  |
Foreign currency swaps | 0 | 0
Significant Unobservable Inputs (Level 3) | Mortgage-backed securities |  |
Assets: |  |
Total available-for-sale securities | 0 | 0
Significant Unobservable Inputs (Level 3) | Asset-backed securities |  |
Assets: |  |
Total available-for-sale securities | 0 | 0
Significant Unobservable Inputs (Level 3) | Municipal bonds |  |
Assets: |  |
Total available-for-sale securities | 0 | 0
Significant Unobservable Inputs (Level 3) | Fixed-income mutual fund |  |
Assets: |  |
Total available-for-sale securities | $ 0 | 0
Significant Unobservable Inputs (Level 3) | Fuel price derivatives - unleaded fuel |  |
Assets: |  |
Fuel price derivatives |  | 0
Significant Unobservable Inputs (Level 3) | Fuel price derivatives – diesel |  |
Assets: |  |
Fuel price derivatives |  | $ 1,924

X
- References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 + Details
Name: | us-gaap_AvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into. + References No definition available. + Details
Name: | us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LiabilitiesFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value as of the balance sheet date of all price risk derivative liabilities not designated as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959 + Details
Name: | us-gaap_PriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Deferred compensation plan assets fair value. + References No definition available. + Details
Name: | wex_DeferredCompensationPlanAssetsFairValue
Namespace Prefix: | wex_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MutualFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=wex_FuelPriceDerivativesUnleadedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=wex_FuelPriceDerivativesDieselMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |