Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net unrealized loss on available-for-sale securities, net of income tax benefit of $108 and $37, respectively	$ (172)	$ (58)
Net unrealized gain (loss) on interest rate swap, net of income tax (expense) benefit of $(91) and $47, respectively	151	(79)
Foreign currency translation	(612)	(558)
Accumulated other comprehensive loss	$ (633)	$ (695)