Stockholders' Equity - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Equity [Abstract]
Foreign currency translation adjustments		$ (2,634)	$ (1,523)
Unrealized loss on investments, net of taxes		(1,538)	(768)
Unrealized gain (loss) on cash flow hedges(1)	[1]	(246)	311
Total accumulated other comprehensive loss		$ (4,418)	$ (1,980)

[1] See Consolidated Statements of Comprehensive Income or Loss for the amounts related to cash flow hedges that were reclassified into the Consolidated Statements of Operations for the periods presented.