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Debt (Tables)
9 Months Ended
Sep. 30, 2025
Debt Disclosure [Abstract]  
Schedule of Net Carrying Amount of Debt
September 30,
2025
December 31,
2024
Principal gross amount$40,879 $40,879 
Add: unamortized debt premium1,341 1,621 
Less: unamortized issuance costs(554)(670)
Net carrying amount$41,666 $41,830 
The 2025 Convertible Notes as of December 31, 2024 consisted of the following (in thousands):
December 31,
2024
Principal$14,949 
Less: unamortized debt discount $(25)
Less: unamortized issuance costs$(19)
Net carrying amount$14,905 
Schedule of Interest Expense
The following table sets forth total interest expense, annualized effective interest rate, and interest expense related to related parties, if applicable, for each of the debt instruments detailed above (in thousands, except for percentages):
Three Months Ended
September 30,
Nine Months Ended
September 30,
2025202420252024
2029 Senior Secured Notes
Contractual interest expense$920 $— $2,760 $— 
Amortization of debt issuance costs37 — 114 — 
Amortization of debt discount/(premium)(93)— (280)— 
Total interest expense$864 $— $2,594 $— 
Related party interest expense$672 $— $2,017 $— 
Working Capital Facility
Contractual interest expense— — 
Amortization of debt issuance costs— — 
Total interest expense$11 $— $11 $— 
2025 Convertible Notes
Contractual interest expense$— $879 $163 $3,499 
Amortization of debt issuance costs— 110 20 438 
Amortization of debt discount/(premium)— 138 25 550 
Total interest expense$— $1,127 $208 $4,487 
Related party interest expense$— $837 $— $2,512 
Short-Term Loan
Contractual interest expense$— $1,271 $— $1,271 
Amortization of debt discount/premium— 3,329 — 3,329 
Total interest expense$— $4,600 $— $4,600 
Related party interest expense$— $4,600 $— $4,600 
Prior Credit Facility
Contractual interest expense$— $— $— $312 
Accretion of exit fee— — — 75 
Amortization of debt issuance costs— — — 117 
Total interest expense$— $— $— $504 
Other interest expense$10 $$31 $95 
Consolidated interest expense$885 $5,731 $2,844 $9,686