The Company and Significant Accounting Policies - Summary of Components of AOCI (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Equity [Abstract]
Accumulated other comprehensive income (loss)	$ (4,115)	$ (2,100)
Other comprehensive income (loss)	(1,000)	(1,900)
Income tax benefit (expense)	400	700
Total other comprehensive income (loss)	(632)	(1,170)
Accumulated other comprehensive income (loss)	$ (4,746)	$ (3,300)