Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Accounts receivable (Details)

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Summary of Significant Accounting Policies - Accounts receivable (Details)
Jun. 30, 2024
USD ($)
customer
Dec. 31, 2023
USD ($)
Accounts receivable    
Accounts receivable $ 2,335,000 $ 821,000
Allowance for doubtful accounts 0  
Customer Concentration Risk    
Accounts receivable    
Accounts receivable 2,335,000 $ 821,000
Customer Concentration Risk | Genentech, Inc.    
Accounts receivable    
Accounts receivable $ 0  
Customer Concentration Risk | Genentech and GSK Customers    
Accounts receivable    
Number of customers | customer 3