Accumulated Other Comprehensive Income - Amount of Income Tax (Expense) Benefit Allocated to Component of Other Comprehensive Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Equity [Abstract]
Foreign Currency Translation, Other comprehensive (loss) income, before tax	$ 40,436		$ 29,445	$ 10,654		$ 743
Foreign Currency Translation, Income tax benefit (expense)	177		(280)	1,291		1,552
Foreign Currency Translation, Other comprehensive (loss) income, net of tax	40,613		29,165	11,945		2,295
Pension and Post-retirement Benefits, Other comprehensive income (loss), before tax	(197)		(268)	(589)		(798)
Pension and Post-retirement Benefits, Income tax benefit (expense)	(4)		100	(16)		296
Pension and Post-retirement Benefits, Other comprehensive (loss) income, net of tax	(201)	[1]	(168)	(605)	[1]	(502)
Other, Other comprehensive (loss) income, before tax	58		49	159		155
Other, Income tax benefit (expense)	(20)		(20)	(60)		(60)
Other, Other comprehensive (loss) income, net of tax	$ 38		$ 29	$ 99		$ 95

[1] Amounts reclassified from accumulated other comprehensive income consist of amortization of prior service benefit. See Note 10, “Pension Plans and Other Postretirement Benefits.”