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Loss from Continuing Operations Before Provision for Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Income Tax Disclosure [Abstract]    
United States $ (9,829) $ (7,525)
Foreign (13) (536)
Loss before provision for income taxes $ (9,816) $ (8,061)