Loss before Income Tax Provision for Domestic and Non-U.S. Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S.	$ (6,321)	$ (1,960)
Foreign	1,289	1,135
Loss before income tax provision	$ (5,032)	$ (825)