Amounts of Unrealized and Realized Net Gains and Changes in Fair Value of Derivative Positions (Detail) (Foreign currency exchange forwards, USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative [Line Items]
Amount of Realized Net Gains (Losses) and Changes in the Fair Value of Forward Contracts	$ (484)	$ 398	$ 47	$ 436
Interest and Other, net
Derivative [Line Items]
Amount of Realized Net Gains (Losses) and Changes in the Fair Value of Forward Contracts	(484)	400	47	276
Discontinued Operations
Derivative [Line Items]
Amount of Realized Net Gains (Losses) and Changes in the Fair Value of Forward Contracts		$ (2)		$ 160