Other Intangible Assets The Changes In The Net Carrying Amount (Detail) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Gross amount
Other Intangible assets, beginning	$ 25,665	$ 1,090	$ 3,147
Other Intangible assets acquired during the period			22,110	1,111
Amortization expense
Foreign currency translation effect on balances	(255)	121	153	100
Other Intangible assets, ending	25,410	1,211	25,410	1,211
Accumulated amortization
Other Intangible assets, beginning	(483)	(65)	(188)
Other Intangible assets acquired during the period
Amortization expense	(327)	(50)	(599)	(115)
Foreign currency translation effect on balances	15		(8)
Other Intangible assets, ending	$ (795)	$ (115)	$ (795)	$ (115)