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Long-Term Debt (Tables)
 6 Months Ended
Jun. 30, 2024
Debt Disclosure [Abstract]  
Summary of Long Term Debt
Long-term debt consisted of the following:
(in thousands)June 30,
2024		December 31,
2023
Principal amount of long-term debt$75,000 $55,000 
Debt discount, net of accretion(759)(917)
Cumulative accretion of end of term payments789 487 
Long-term debt$75,030 $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 June 30,Six Months Ended June 30,
2024202320242023
Total interest expense$2,176 $1,148 $4,049 $2,257 
Non-cash interest expense$207 $219 $461 $444 
Schedule of Future Principal Payments and the Final Payments Due
As of June 30, 2024, future principal and accrued end-of-term payments of $75.8 million under the Hercules Loan Agreement are due on July 1, 2027.
(in thousands),
Year Ending December 31,Total
2024$— 
2025— 
2026— 
202775,789 
Long-term debt$75,789