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Non-controlling Interests - Additional Information (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Aug. 31, 2015 | Sep. 30, 2015 | Sep. 30, 2015 | Dec. 31, 2013 | Aug. 30, 2012
Noncontrolling Interest [Line Items] |  |  |  |  |
Purchase of redeemable non-controlling interest |  | $ 46,018 | $ 46,018 |  |
Unik |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |
Percent of ownership interest acquired | 49.00% |  |  |  | 51.00%
Purchase of redeemable non-controlling interest | $ 46,018 |  |  |  |
WEX Europe Services |  |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |  |
Percent of ownership interest acquired |  |  |  | 75.00% |

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- Definition Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569655-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4616395-111683 + Details
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- Details
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- Details
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