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	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Designated as Hedging Instrument
Derivative [Line Items]
Gains (losses) recognized in other comprehensive income (loss)	$ (4,808)	$ 724	$ (4,718)