United States and Foreign Components of Consolidated Loss before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
U.S.	$ (38,281)	$ (43,096)	$ (54,757)
Foreign	959	759	700
Loss before income taxes	$ (37,322)	$ (42,337)	$ (54,057)