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Certain Balance Sheet Items - Accounts Payable and Accrued Expenses (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Jul. 31, 2022
Dec. 31, 2021
Mar. 09, 2021
Accounts Payable and Accrued Expenses [Line Items]        
Accounts Payable, Trade $ 19,862,487   $ 27,424,743  
Accrued Salaries, Current 12,574,921   16,112,912  
Accrued litigation settlement 44,000,000   0  
Other Accrued Liabilities 3,249,477   4,106,875  
Accounts payable and accrued liabilities 79,686,885   $ 47,644,530  
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