Income Taxes - Schedule of Domestic and Foreign Components of Income (Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Domestic	$ 1,568	$ (1,875)	$ 6,259
Foreign	628	1,344	982
Income (loss) before income taxes	$ 2,196	$ (531)	$ 7,241