Reconciliation of Changes in Accrued Product Warranty Liability (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Product Warranty Liability [Line Items]
Balance at beginning of period	$ 22,939		$ 19,100		$ 19,312
Product warranty accruals	22,614		26,989		24,730
Settlements	(21,468)		(23,434)		(24,600)
Acquisitions			532		133
Charged to other accounts	344	[1]	(248)	[1]	(475)	[1]
Balance at end of period	$ 24,429		$ 22,939		$ 19,100

[1] Includes primarily the effect of foreign currency translation adjustments for the Company's subsidiaries with functional currencies other than the USD.