Goodwill (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Goodwill, Gross, Beginning Balance	$ 412,940us-gaap_GoodwillGross	$ 413,437us-gaap_GoodwillGross
Accumulated impairment losses, Beginning Balance	(29,221)	(29,221)
Goodwill, Beginning Balance	383,719us-gaap_Goodwill	384,216us-gaap_Goodwill
Purchase accounting adjustments		377
Foreign currency translation adjustment	(2,529)us-gaap_GoodwillTranslationAdjustments	(874)us-gaap_GoodwillTranslationAdjustments
Acquisitions	11,839us-gaap_GoodwillAcquiredDuringPeriod
Goodwill, Gross, Ending Balance	422,250us-gaap_GoodwillGross	412,940us-gaap_GoodwillGross
Accumulated impairment losses, Ending Balance	(29,221)	(29,221)
Goodwill, Ending Balance	393,029us-gaap_Goodwill	383,719us-gaap_Goodwill
Fleet Management Solutions [Member]
Goodwill [Roll Forward]
Goodwill, Gross, Beginning Balance	223,204	223,129
Accumulated impairment losses, Beginning Balance	(10,322)	(10,322)
Goodwill, Beginning Balance	212,882	212,807
Purchase accounting adjustments		377
Foreign currency translation adjustment	(1,826)	(302)
Acquisitions	11,839
Goodwill, Gross, Ending Balance	233,217	223,204
Accumulated impairment losses, Ending Balance	(10,322)	(10,322)
Goodwill, Ending Balance	222,895	212,882
Supply Chain Solutions [Member]
Goodwill [Roll Forward]
Goodwill, Gross, Beginning Balance	189,736	190,308
Accumulated impairment losses, Beginning Balance	(18,899)	(18,899)
Goodwill, Beginning Balance	170,837	171,409
Purchase accounting adjustments		0
Foreign currency translation adjustment	(703)	(572)
Acquisitions	0
Goodwill, Gross, Ending Balance	189,033	189,736
Accumulated impairment losses, Ending Balance	(18,899)	(18,899)
Goodwill, Ending Balance	$ 170,134	$ 170,837

Amount after accumulated impairment loss of an asset representing 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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting 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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 16

-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e961-128460

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Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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