Other Comprehensive Income (Loss) - Summary of Other Comprehensive Income (Loss) and Tax Impact (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]
Net unrealized (loss) gain on available-for-sale securities, net of income taxes	$ (94)	$ 31	$ 249	$ 24
Net unrealized gain (loss) on interest rate swaps, net of income taxes	247		(516)	79
Foreign currency translation	(3)	(15)	(24)	(41)
Total other comprehensive income (loss)	$ 150	$ 16	$ (291)	$ 62