Goodwill and Other Intangible Assets Components of Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Amortized:
Gross amortized other intangible assets	$ 74,937	$ 75,091
Accumulated Amortization	(15,997)	(13,268)
Net amortized other intangible assets	58,940	61,823
Total other intangible assets, net	100,113	103,011
Non-compete agreements
Amortized:
Total estimated life	5 years
Gross amortized other intangible assets	540	540
Dealer/customer related
Amortized:
Total estimated life	7 years
Gross amortized other intangible assets	59,194	59,244
Developed technology
Amortized:
Gross amortized other intangible assets	15,203	15,307
Developed technology | Minimum [Member]
Amortized:
Total estimated life	5 years
Developed technology | Maximum
Amortized:
Total estimated life	7 years
Brand names
Non-amortizable - indefinite lived:
Non-amortizable, Net	$ 41,173	$ 41,188