Changes in Carrying Amount of Service and Product Warranties (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Dec. 31, 2011
Product Liability Contingency [Line Items]
Balance at beginning of the year	$ 29,355	$ 30,050	$ 30,050
Service and product warranty provision	26,579	26,035	50,096
Payments	(24,025)	(25,040)	(53,937)
Acquired	156	3,623	3,575
Translation	(222)	343	(429)
Balance at end of the period	$ 31,843	$ 35,011	$ 29,355