Annual report pursuant to Section 13 and 15(d)

Lease Agreement - Leased facilities (Details)

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Lease Agreement - Leased facilities (Details)
 1 Months Ended
Jan. 31, 2023
USD ($)
facility
Dec. 31, 2023
USD ($)
Nov. 10, 2023
USD ($)
Dec. 31, 2022
USD ($)
Leases        
Operating leases, number of leased facilities | facility 1      
Operating lease right-of-use assets   $ 378,000   $ 29,000
Operating lease liabilities   389,000   34,000
Current operating lease liabilities   54,000   $ 34,000
Non-current operating lease liabilities   $ 335,000    
Leased facilities, Emeryville, California, with lease expiration of July 31, 2023        
Leases        
Period of lease extension 5 months      
Existence of option to extend false      
Adjustment to right of use asset for lease modification $ 100,000      
Leased facilities, Emeryville, California, different location than previous lease        
Leases        
Lease term     65 months  
Operating lease right-of-use assets     $ 400,000  
Operating lease liabilities     $ 400,000