Income Tax Provision Reconciled to Amount Computed by Applying Statutory Federal Tax Rate to Income (Loss) Before Income Tax Provision (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Expense Benefit Continuing Operations Income Tax Reconciliation [Abstract]
Income tax provision (benefit) at statutory federal tax rate of 21%	$ (1,119)	$ (61)	$ 345
State taxes, net of federal benefit	(42)	2	(19)
Foreign taxes provisions provided for at rates other than U.S statutory rate	(315)	(410)	(494)
Section 951(A) inclusion	83	428	523
Stock options	467	(218)	(443)
Change in valuation allowance	1,041	274	700
Permanent differences	50	86	42
PPP loan forgiveness			(619)
Other	(1)		(7)
Total income tax provision	$ 164	$ 101	$ 28