The Company and Significant Accounting Policies - Summary of Components of AOCI (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Equity [Abstract]
Accumulated other comprehensive loss			$ (2,977)	$ (4,100)
Foreign currency translation (gain) loss			100
Change in fair value of interest rate swap agreements			2,100	100
Income tax (expense) benefit			(800)
Total other comprehensive income (loss)	$ 455	$ 612	1,352	66
Accumulated other comprehensive loss	$ (1,625)	$ (4,000)	$ (1,625)	$ (4,000)