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Debt (Tables) | 3 Months Ended
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Mar. 31, 2022
Debt Disclosure [Abstract] |
Schedule of Debt | The carrying values of the components of the 2014 Notes and 2019 Notes are as follows (in thousands):
|  | March 31, 2022 |  | December 31, 2021
2.75% 2014 Notes due 2034 |  |  |  |
Principal amount |  | $ | 578 |  |  | $ | 578 |
Unamortized debt discount |  | (8) |  |  | (8) |
Unamortized debt issuance cost |  | (2) |  |  | (2) |
Net carrying value of 2014 Notes |  | $ | 568 |  |  | $ | 568 |
5.25% 2019 Notes due 2024 |  |  |  |
Principal amount |  | $ | 55,000 |  |  | $ | 55,000 |
Unamortized debt issuance cost |  | (1,297) |  |  | (1,408) |
Net carrying value of 2019 Notes |  | $ | 53,703 |  |  | $ | 53,592 |
Net carrying value of all Notes |  | $ | 54,271 |  |  | $ | 54,160 |
The carrying values of our term loan and advances under the Credit Facility, and the maximum amount available under the Credit Facility are as follows (in thousands):
|  | March 31, 2022 |  | December 31, 2021
Term Loan |  |  |  |
Principal amount |  | $ | 10,000 |  |  | $ | 10,000 |
End of term fee accretion |  | 133 |  |  | 79 |
Unamortized debt issuance cost |  | (27) |  |  | (30) |
Net carrying value of term loan |  | $ | 10,106 |  |  | $ | 10,049 |
Revolving Credit Facility |  |  |  |
Carrying value of advances under credit agreement |  | $ | — |  |  | $ | 6,838 |
The following table summarizes the par value, carrying value and the estimated fair value of our debt as of March 31, 2022 and December 31, 2021, respectively (in thousands):
|  | March 31, 2022 |  | December 31, 2021
|  | Par Value |  | Carrying Value |  | Fair Value |  | Par Value |  | Carrying Value |  | Fair Value
Bridge Loans |  | $ | 25,000 |  |  | $ | 35,655 |  |  | $ | 35,655 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Convertible Notes: |  |  |  |  |  |  |  |  |  |  |  |
2014 Notes |  | $ | 578 |  |  | $ | 568 |  |  | $ | 601 |  |  | $ | 578 |  |  | $ | 568 |  |  | $ | 601 |
2019 Notes |  | 55,000 |  |  | 53,703 |  |  | 74,998 |  |  | 55,000 |  |  | 53,592 |  |  | 81,880 |
Total Notes |  | $ | 55,578 |  |  | $ | 54,271 |  |  | $ | 75,599 |  |  | $ | 55,578 |  |  | $ | 54,160 |  |  | $ | 82,481 |
Term loan, net |  | $ | 10,000 |  |  | $ | 10,106 |  |  | $ | 9,796 |  |  | $ | 10,000 |  |  | $ | 10,049 |  |  | $ | 10,113 |
Advances under revolving credit agreement |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 6,838 |  |  | $ | 6,838 |  |  | $ | 6,838 |
Total debt |  | $ | 90,578 |  |  | $ | 100,032 |  |  | $ | 121,050 |  |  | $ | 72,416 |  |  | $ | 71,047 |  |  | $ | 99,432 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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