Other, Net (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Other Income and Expenses [Abstract]
Foreign currency transaction gains (losses)	$ 4,314	$ 3,550	$ 3,230	$ (1,219)
Realized gain on sale of available-for-sale securities			24,465
Other		64		(125)
Total	$ 4,314	$ 3,614	$ 27,695	$ (1,344)