Goodwill (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Carrying amount of goodwill attributable to each reportable business segment
Goodwill, Gross	$ 413,100	$ 412,940
Accumulated impairment losses	(29,221)	(29,221)
Goodwill	383,879	383,719
Foreign currency translation adjustment	160
Fleet Management Solutions [Member]
Carrying amount of goodwill attributable to each reportable business segment
Goodwill, Gross	223,401	223,204
Accumulated impairment losses	(10,322)	(10,322)
Goodwill	213,079	212,882
Foreign currency translation adjustment	197
Supply Chain Solutions [Member]
Carrying amount of goodwill attributable to each reportable business segment
Goodwill, Gross	189,699	189,736
Accumulated impairment losses	(18,899)	(18,899)
Goodwill	170,800	170,837
Foreign currency translation adjustment	$ (37)