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License Agreements - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Aug. 01, 2018
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Common stock, shares issued 39,429,103 3,596,936  
NIH Agreement      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Payment Of License Fee $ 100,000    
Potential milestone payments 2,100    
Potential milestone payments 6,500    
NIH Agreement | Research and Development Expense      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Payment Of License Fee 200 $ 100  
U W Two Thousand And Eighteen Agreement      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Common stock, shares issued     192,276
Potential Payments For Future Development Regulatory And Sales Based Milestones 1,400    
Total Milestone Payments 6,800    
U W Two Thousand And Eighteen And U W Two Thousand And Twenty Agreement | License      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Payment Of License Fee 200 $ 300  
U T Agreement      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Potential milestone payments 800    
Potential milestone payments 3,800    
UW Flu License Agreement      
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]      
Payment Of License Fee 100    
Aggregate Payments Related To Development 350    
Aggregate Payments Related To Cumulative Net Sales Thresholds $ 6,000    
License Agreement Expiry Year 2041