XML 40 R28.htm IDEA: XBRL DOCUMENT v3.23.3
Summary of Significant Accounting Policies - Additional Information (Details)
 3 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
financialInstitution
lease
Dec. 31, 2022
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
financialInstitution
lease
Sep. 30, 2023
EUR (€)
Sep. 30, 2022
USD ($)
Jan. 31, 2023
shares
Property, Plant and Equipment [Line Items]              
Cash and cash equivalents $ 59,689,000 $ 106,745,000   $ 59,689,000      
Number of financial institutions used for cash deposits | financialInstitution 2     2      
Depreciation expense $ 34,000   $ 17,000 $ 88,000   $ 58,000  
Impairment losses 0   0 $ 0   0  
Goodwill, impairment charge   $ 33,000,000          
Government assistance rate       43.50% 43.50%    
Government assistance, amount (up to) $ 200,000   $ 600,000 $ 2,300,000   $ 2,000,000  
Government Assistance, Statement of Income or Comprehensive Income [Extensible Enumeration] Nonoperating Income (Expense)     Nonoperating Income (Expense) Nonoperating Income (Expense)    
Number of existing leases | lease 3     3      
Pre-Funded Warrants              
Property, Plant and Equipment [Line Items]              
Warrant exercised (in shares) | shares             5,096,552
Minimum              
Property, Plant and Equipment [Line Items]              
Estimated useful life (in years) 3 years     3 years      
Lease term (in years) 12 months     12 months      
Maximum              
Property, Plant and Equipment [Line Items]              
Estimated useful life (in years) 13 years     13 years      
Lease term (in years) 60 months     60 months      
United States              
Property, Plant and Equipment [Line Items]              
Cash and cash equivalents $ 35,400,000     $ 35,400,000      
Investment interest rate 5.00%     5.00%      
United States | Money market funds              
Property, Plant and Equipment [Line Items]              
Investment interest rate 5.00%     5.00%      
Germany              
Property, Plant and Equipment [Line Items]              
Cash and cash equivalents $ 22,400,000     $ 22,400,000      
Germany | Maximum              
Property, Plant and Equipment [Line Items]              
Government assistance, amount (up to) | €         € 1,000,000    
Australia              
Property, Plant and Equipment [Line Items]              
Cash and cash equivalents $ 1,900,000     $ 1,900,000      
Australia and Germany | Minimum              
Property, Plant and Equipment [Line Items]              
Investment interest rate 2.00%     2.00%      
Australia and Germany | Maximum              
Property, Plant and Equipment [Line Items]              
Investment interest rate 3.25%     3.25%