Balance Sheet Components (Details) - Schedule of prepaid expenses and other current assets - USD ($) $ in Thousands  | 
Dec. 31, 2022  | 
Dec. 31, 2021  | 
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| Schedule Of Prepaid Expenses And Other Current Assets [Abstract] | ||
| Prepaid directors and officers liability insurance premiums | $ 476 | $ 821 | 
| Prepaid preclinical services | 1,554 | 885 | 
| Other | 159 | 126 | 
| Total | $ 2,189 | $ 1,832 | 
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- References No definition available. 
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- Definition The total amount of prepaid preclinical services. No definition available. 
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of other miscellaneous assets expected to be realized or consumed within one year or operating cycle, if longer. No definition available. 
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- Definition Amount of asset related to consideration paid in advance for insurance that provides economic benefits within a future period of one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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