Reconciliation of Changes in Accrued Warranty Costs (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Warranties [Line Items]
Balance at beginning of year	$ 8,588	$ 8,487
Warranty claims paid or retired	(676)	(347)
Expense	2,118	215
Adjustment due to currency translation	278	233
Balance at end of year	$ 10,308	$ 8,588