Changes in Carrying Amount of Service and Product Warranties (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2012	Apr. 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	11,395	11,769	50,096
Payments	(11,424)	(10,886)	(53,937)
Acquired		40	3,575
Translation	83	197	(429)
Balance at end of the period	$ 29,409	$ 31,170	$ 29,355