Other Intangible Assets The Changes In The Net Carrying Amount (Detail) (USD $) In Thousands				3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2010	Jun. 30, 2011 Gross	Jun. 30, 2010 Gross	Jun. 30, 2011 Gross	Jun. 30, 2010 Gross	Jun. 30, 2011 Accumulated Impairment	Jun. 30, 2010 Accumulated Impairment	Jun. 30, 2011 Accumulated Impairment	Jun. 30, 2010 Accumulated Impairment
Indefinite-lived Intangible Assets by Segment [Line Items]
Other Intangible assets Beginning Balance	$ 25,182	$ 2,959	$ 1,025	$ 3,212	$ 1,111	$ 3,147		$ (306)	$ (26)	$ (188)
Other Intangible assets acquired during the period				22,110		22,110	1,111
Amortization expense								(145)	(39)	(272)	(65)
Foreign currency translation effect on balances				343	(21)	408	(21)	(32)		(23)
Other Intangible assets Ending Balance	$ 25,182	$ 2,959	$ 1,025	$ 25,665	$ 1,090	$ 25,665	$ 1,090	$ (483)	$ (65)	$ (483)	$ (65)