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Accrued Expenses and Other Liabilities - Schedule of Accrued Expenses and Other Liabilities (Detail) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Accrued Liabilities and Other Liabilities [Abstract]    
Accrued compensation and related expenses $ 1,544 $ 1,909
Accrued clinical 366 1,826
Accrued professional services 61 65
Accrued other 67 112
Total accrued expenses and other liabilities $ 2,038 $ 3,912