Other Comprehensive (Loss) Income - Summary of Other Comprehensive (Loss) Income and Tax Impact (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net unrealized (loss) gain on available-for-sale securities, net of income taxes	$ (114)	$ 42	$ (7)	$ 9
Net unrealized gain on interest rate swaps, net of income taxes	34	61	79	117
Foreign currency translation	(12)	(15)	(26)	(29)
Total other comprehensive (loss) income	$ (92)	$ 88	$ 46	$ 97