Accrued Warranty (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Accrued Warranty [Line Items]
Balance at beginning of year	$ 2,777	$ 3,035
Provision charged to cost of goods sold	1,963	2,463
Acquisition related warranty accrual	998
Use of provision	(2,074)	(2,781)
Foreign currency exchange rate changes	26	60
Balance at end of year	$ 3,690	$ 2,777