Other Comprehensive (Loss) Income - Summary of Other Comprehensive Income (Loss) and Tax Impact (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net unrealized gain on available-for-sale securities, net of income taxes	$ 231	$ 107
Net unrealized (loss) gain on interest rate swaps, net of income taxes	(532)	45
Foreign currency translation	(10)	(14)
Total other comprehensive (loss) income	$ (311)	$ 138