Components of Other Intangible Assets (Detail) (USD $)	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Intangible Assets by Major Class [Line Items]
Amortized - finite lived	$ 17,594,000	$ 16,878,000
Less: Accumulated amortization	(3,134,000)	(1,206,000)
Net amortized other intangible assets	14,460,000	15,672,000
Total other intangible assets, net	31,833,000	33,050,000
Brand/Trade Names
Intangible Assets by Major Class [Line Items]
Non-amortizable - indefinite lived	17,373,000	17,378,000
Non-compete agreements
Intangible Assets by Major Class [Line Items]
Total Estimated Life (years)	5 years
Amortized - finite lived	240,000	240,000
Dealer/customer related
Intangible Assets by Major Class [Line Items]
Total Estimated Life (years)	7 years
Amortized - finite lived	7,984,000	8,013,000
Developed technology
Intangible Assets by Major Class [Line Items]
Total Estimated Life (years)	7 years
Amortized - finite lived	$ 9,370,000	$ 8,625,000