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Related Party Transactions (Details) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2022
Mar. 31, 2016
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2023
Related Party Transaction [Line Items]                  
Research and development expenses     $ 23,090,989 $ 23,743,970 $ 44,001,307 $ 53,920,481      
Accounts receivable     1,773,665   1,773,665       $ 2,405,228
The Wistar Institute                  
Related Party Transaction [Line Items]                  
Collaborative agreement, amended amount             $ 13,600,000    
Affiliated Entity                  
Related Party Transaction [Line Items]                  
Expenses to reimburse   $ 3,100,000              
Collaborative arrangement, term (in years)   5 years              
Contra-research and development expense     9,000 179,000 149,000 390,000      
Affiliated Entity | The Wistar Institute                  
Related Party Transaction [Line Items]                  
Awarded amount $ 1,200,000       2,400,000     $ 10,700,000  
Awarded option amount         4,200,000   $ 1,600,000    
Research and development expenses     455,000 $ 510,000 1,000,000.0 $ 932,000      
Accounts receivable     1,800,000   1,800,000       2,400,000
Accounts payable and accrued liabilities, current     1,900,000   1,900,000       1,100,000
Deferred grant funding, from affiliate     $ 22,000   $ 22,000       $ 22,000
Plumbline Life Sciences                  
Related Party Transaction [Line Items]                  
Investment owned (in shares)     597,808   597,808        
Non-controlling interest (in percent)     17.80%   17.80%