Income Taxes - Income Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Domestic	$ 7,237	$ (14,637)	$ 17,718
Foreign	5,696	5,038	5,807
Income (loss) before income taxes	$ 12,933	$ (9,599)	$ 23,525