v3.25.4
Summary of Significant Accounting Policies (Details Textual)
 12 Months Ended
Dec. 31, 2025
USD ($)
Segment
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Apr. 21, 2023
USD ($)
Summary Of Significant Accounting Policy [Line Items]        
Number of operating segments for research and development | Segment 1      
Non-current restricted cash $ 1,885,000 $ 1,885,000 $ 1,885,000  
Allowance for Doubtful Accounts Receivable 0 0    
Impairment losses 0 0 0  
Other comprehensive loss 0 0 0  
Income tax effect related to unrealized losses on marketable securities 0 0 $ 0  
Dividends declared or paid 0 0    
ARCALIS [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Equity Method Investments 0      
Property Leases in San Diego [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Non-current restricted cash $ 1,900,000 $ 1,900,000    
Wells Fargo Credit Agreement [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Debt instrument, collateral amount       $ 55,000,000
Employees and Officers [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Share options expiration period 10 years      
Vesting period 4 years      
Vesting description Share-based compensation is recognized over the requisite service period of the individual awards using the straight-line attribution method, which generally equals the vesting period. Employees and officers’ stock options have a ten-year life and generally vest 25% on the first anniversary of the grant and in 1/36th equal installments on each monthly anniversary thereafter, such that options are fully vested on the four-year anniversary of the date of grant. The exercisability and vesting periods of equity awards granted to consultants and directors vary.      
First Year Anniversary of the Grant [Member] | Employees and Officers [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Vesting percentage 25.00%      
ASU 2023-07 [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Change in accounting principle, accounting standards update, adopted true      
Change in accounting principle, accounting standards update, adoption date Jan. 01, 2024      
Change in accounting principle, accounting standards update, immaterial effect [true false] true      
ASU 2023-09 [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Change in accounting principle, accounting standards update, adopted true      
Maximum [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Property and equipment, useful lives 5 years      
Minimum [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Property and equipment, useful lives 3 years      
Credit Risk [Member] | Accounts Receivable [Member] | BARDA [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Concentration risk, percentage 64.00% 60.00%    
Credit Risk [Member] | Accounts Receivable [Member] | CSL [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Concentration risk, percentage 19.00% 20.00%    
Customer Concentration Risk [Member] | Revenue [Member] | BARDA [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Concentration risk, percentage 16.00%      
Customer Concentration Risk [Member] | Revenue [Member] | CSL [Member]        
Summary Of Significant Accounting Policy [Line Items]        
Concentration risk, percentage 80.00% 91.00% 92.00%