Net Gains Recorded in Accumulated Other Comprehensive Income (Loss) Relating to Foreign Exchange Contracts Designated as Net Investment Hedges (Detail) (Designated as Hedging Instrument, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Designated as Hedging Instrument
Derivative [Line Items]
Gains (losses) recognized in other income ,net	$ 724	$ 90