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Balance Sheet Details - Schedule of Accounts Payable (Detail) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Clinical costs $ 4,348 $ 3,749
Legal and audit costs 128 288
Other 224 244
Total $ 4,700 $ 4,281