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Certain Balance Sheet Items - Accounts Payable and Accrued Expenses (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Accounts Payable and Accrued Expenses [Line Items]    
Grant liability $ 2,300,000 $ 4,300,000
Nonrelated Party    
Accounts Payable and Accrued Expenses [Line Items]    
Trade accounts payable 6,772,184 3,577,826
Accrued compensation 5,685,560 9,837,104
Other accrued expenses 4,218,178 6,432,814
Total $ 16,675,922 $ 19,847,744