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Borrowings (Tables) | 9 Months Ended
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Sep. 30, 2023
Debt Disclosure [Abstract] |
Summary of Carrying Amount of Borrowings | Carrying amount of the Company's borrowings consist of the following (in thousands):
|  | September 30, 2023 |  |  | December 31, 2022 |
Senior convertible notes |  | $ | 226,487 |  |  | $ | 225,397 |
MidCap credit facility |  |  | 37,921 |  |  |  | 39,264 |
Mann Group convertible note |  |  | 8,829 |  |  |  | 8,829 |
Total debt – net carrying amount |  | $ | 273,237 |  |  | $ | 273,490 |
Schedule of Line of Credit Facility Debt and Key Terms | The following table provides a summary of the Company’s principal balance of debt and key terms:
|  | Amount Due |  | Terms
|  | September 30, 2023 |  | December 31, 2022 |  | Annual Interest Rate |  |  | Maturity Date |  |  | Conversion Price
Senior convertible notes |  | $230.0 million |  | $230.0 million |  | 2.50% |  |  | March 2026 |  |  | $5.21 per share
MidCap credit facility(1) |  | $38.3 million |  | $40.0 million |  | one-month SOFR (1% floor) plus 6.25%; cap of 8.25% |  | (1 | ) | August 2025 |  | (1 | ) | N/A
Mann Group convertible note |  | $8.8 million |  | $8.8 million |  | 2.50% |  |  | December 2025 |  |  | $2.50 per share
_________________________ (1) In August 2022, the Company amended the MidCap credit facility and transitioned the benchmark interest rate from LIBOR to the Secured Overnight Financing Rate (“SOFR”).
Schedule of Maturities of Company's Borrowings | The maturities of the Company’s borrowings as of September 30, 2023 are as follows (in thousands):
|  | Amounts |
2023 |  | $ | 5,000 |
2024 |  |  | 20,000 |
2025 |  |  | 22,163 |
2026 |  |  | 230,000 |
Total principal payments |  |  | 277,163 |
Unamortized discount |  |  | (413 | )
Debt issuance costs |  |  | (3,513 | )
Total debt |  | $ | 273,237 |
Schedule of Amortization of Premium and Accretion of Debt Issuance Costs | Amortization of the premium and accretion of debt issuance costs related to all borrowings were as follows (in thousands):
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Amortization of debt discount |  | $ | 109 |  |  | $ | 108 |  |  | $ | 323 |  |  | $ | 321 |
Amortization of debt issuance cost |  |  | 363 |  |  |  | 363 |  |  |  | 1,090 |  |  |  | 1,089 |

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