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Long-Term Debt (Tables)
3 Months Ended
Mar. 31, 2024
Debt Disclosure [Abstract]  
Summary of Long Term Debt
Long-term debt consisted of the following:
(in thousands)March 31,
2024
December 31,
2023
Principal amount of long-term debt$55,000 $55,000 
Debt discount, net of accretion(825)(917)
Cumulative accretion of end of term payments649 487 
Long-term debt$54,824 $54,570 
Interest Income and Interest Expense Disclosure
The Company recognized interest expense under the Hercules Loan Agreement as follows:
(in thousands)Three Months Ended March 31,
20242023
Total interest expense$1,874 $884 
Non-cash interest expense$254 $225 
Schedule of Future Principal Payments and the Final Payments Due
As of March 31, 2024, future principal and accrued end-of-term payments due under the Hercules Loan Agreement were as follows (in thousands):
Year Ending December 31,Total
2024$— 
202524,720 
202630,929 
Long-term debt$55,649