Balance Sheets Details - Schedule of Prepaid Expenses and Other Current Assets (Parenthetical) (Detail) - USD ($) $ in Thousands |
Jun. 30, 2023 |
Dec. 31, 2022 |
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Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] | ||
Prepaid R&D costs due to related parties | $ 76 | $ 14 |