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Summary of Significant Accounting Policies - Additional Information (Details)
€ in Millions
 12 Months Ended
Dec. 31, 2024
USD ($)
lease
financialInstitution
shares
Dec. 31, 2023
USD ($)
Dec. 31, 2024
EUR (€)
lease
financialInstitution
shares
Property, Plant and Equipment [Line Items]      
Cash and cash equivalents $ 35,668,000 $ 46,674,000  
Number of financial institutions used for cash deposits | financialInstitution 2   2
Depreciation and amortization expense $ 134,000 111,000  
Impairment losses 0 0  
Australian research and development tax incentive 37,000 670,000  
Government assistance, amount $ 700,000 $ 3,300,000  
Government Assistance, Income, Increase (Decrease), Statement of Income or Comprehensive Income [Extensible Enumeration] Other income (expense), net Other income (expense), net  
Number of existing operating leases | lease 3   3
Prefunded stock warrants      
Property, Plant and Equipment [Line Items]      
Warrant exercised (in shares) | shares 11,193,564   11,193,564
Minimum      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 3 years   3 years
Lease term (in months) 12 months   12 months
Maximum      
Property, Plant and Equipment [Line Items]      
Estimated useful life (in years) 13 years   13 years
Lease term (in months) 60 months   60 months
United States      
Property, Plant and Equipment [Line Items]      
Cash and cash equivalents $ 15,100,000    
Investment interest rate (as a percent) 4.30%   4.30%
United States | Money market funds      
Property, Plant and Equipment [Line Items]      
Investment interest rate (as a percent) 4.30%   4.30%
Germany      
Property, Plant and Equipment [Line Items]      
Cash and cash equivalents $ 20,500,000    
Australian research and development tax incentive | €     € 3.5
Germany | Money market funds | Minimum      
Property, Plant and Equipment [Line Items]      
Investment interest rate (as a percent) 2.75%   2.75%
Germany | Money market funds | Maximum      
Property, Plant and Equipment [Line Items]      
Investment interest rate (as a percent) 3.25%   3.25%
Australia      
Property, Plant and Equipment [Line Items]      
Cash and cash equivalents $ 100,000    
Government R&D assistance rate (as a percent) 43.50%