Roll Forward Of The Warranty Reserve (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning balance January 1	$ 7,196	$ 4,888	$ 4,875
Provision for warranties	4,788	6,220	3,845
Claim settlements	(3,864)	(3,823)	(3,865)
Other adjustments, including acquisitions and currency translation	(184)	(89)	33
Ending balance December 31	$ 7,936	$ 7,196	$ 4,888