Components of Other Intangible Assets (Detail) (USD $)	3 Months Ended
	Mar. 31, 2012 Year	Dec. 31, 2011
Intangible Assets by Major Class [Line Items]
Amortized - finite lived	$ 17,264,000	$ 16,878,000
Less: Accumulated amortization	(1,910,000)	(1,206,000)
Net amortized other intangible assets	15,354,000	15,672,000
Total other intangible assets, net	32,751,000	33,050,000
Brand names
Intangible Assets by Major Class [Line Items]
Non-amortizable - indefinite lived	17,397,000	17,378,000
Non-compete agreements
Intangible Assets by Major Class [Line Items]
Total Estimated Life (years)	5
Amortized - finite lived	240,000	240,000
Dealer/customer related
Intangible Assets by Major Class [Line Items]
Total Estimated Life (years)	7
Amortized - finite lived	8,142,000	8,013,000
Developed technology
Intangible Assets by Major Class [Line Items]
Total Estimated Life (years)	7
Amortized - finite lived	$ 8,882,000	$ 8,625,000