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Certain Balance Sheet Items - Accounts Payable and Accrued Expenses (Details) - USD ($)
 1 Months Ended 12 Months Ended
Jul. 31, 2023
Dec. 31, 2022
Sep. 30, 2023
Mar. 31, 2023
Jan. 31, 2023
Jul. 31, 2022
Nonrelated Party            
Accounts Payable and Accrued Expenses [Line Items]            
Trade accounts payable   $ 19,862,487 $ 3,192,053      
Accrued compensation   12,574,921 10,214,707      
Accrued litigation settlement   44,000,000 0      
Other accrued expenses   3,249,477 2,146,982      
Total   79,686,885 $ 15,553,742      
McDermid v. Inovio Pharmaceuticals, Inc. and J. Joseph Kim            
Accounts Payable and Accrued Expenses [Line Items]            
Estimate of cash settlement         $ 30,000,000 $ 30,000,000
Estimate of shares settlement         $ 14,000,000 $ 14,000,000
Amount paid to other party   $ 252,000        
Shares issued in settlement (in shares)       9,121,000    
Behesti v. Kim, et al.            
Accounts Payable and Accrued Expenses [Line Items]            
Damages paid $ 1,200,000