Changes in Product Warranty Reserve (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Warranties [Line Items]
Balance at beginning of period	$ 58,212	$ 50,640
Warranty expense	23,059	22,862
Acquisitions	2,227	1,529
Warranty payments	(20,603)	(16,972)
Foreign currency impact/other	(2,302)	153
Balance at end of period	$ 60,593	$ 58,212