The Company and Significant Accounting Policies - Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Equity [Abstract]
Accumulated other comprehensive income (loss)			$ (2,138)	$ 200
Other comprehensive income (loss)			(1,900)	(2,900)
Income tax benefit (expense)			700	1,100
Total other comprehensive income (loss)	$ (26)	$ (1,139)	(1,196)	(1,770)
Accumulated other comprehensive income (loss)	$ (3,334)	$ (1,600)	$ (3,334)	$ (1,600)