The Company and Significant Accounting Policies - Summary of Components of AOCI (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Equity [Abstract]
Accumulated other comprehensive income (loss)			$ (4,115)	$ (2,100)
Other comprehensive income (loss)			(900)	(1,900)
Income tax benefit (expense)			300	700
Total other comprehensive income (loss)	$ 86	$ (26)	(546)	(1,196)
Accumulated other comprehensive income (loss)	$ (4,660)	$ (3,300)	$ (4,660)	$ (3,300)