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CONVERTIBLE DEBT (Tables) | 9 Months Ended
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Sep. 30, 2022
Debt Disclosure [Abstract] |
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments | The following table presents the components of the 2022 Notes:
| As of
(in thousands, except for years and percentages) | September 30, 2022 |  | December 31, 2021
Liability component: |  |  |
Principal amount | $ | 37,707 |  |  | $ | 37,707 |
Less: Debt discount, net of amortization | — |  |  | (672) |
Less: Debt issuance costs, net of amortization | (50) |  |  | (211) |
Carrying amount | $ | 37,657 |  |  | $ | 36,824 |
Remaining debt discount amortization period (years) | n/a |  | 0.9
Effective interest rate on liability component | n/a |  | 6.95 | %
The following table presents the components of the 2024 Notes:
| As of
(in thousands, except for years and percentages) | September 30, 2022 |  | December 31, 2021
Liability component: |  |  |
Principal amount | $ | 115,500 |  |  | $ | 115,500 |
Less: Debt discount, net of amortization | — |  |  | (14,576) |
Less: Debt issuance costs, net of amortization | (1,739) |  |  | (1,983) |
Carrying amount | $ | 113,761 |  |  | $ | 98,941 |
Remaining debt discount amortization period (years) | n/a |  | 2.7
Effective interest rate on liability component | n/a |  | 7.95 | %
Schedule of Convertible Debt Interest | The following table presents interest expense recognized for the 2022 Notes:
| Three Months Ended |  | Nine Months Ended
(in thousands) | September 30, 2022 |  | October 1, 2021 |  | September 30, 2022 |  | October 1, 2021
Contractual interest expense | $ | 412 |  |  | $ | 412 |  |  | $ | 1,236 |  |  | $ | 1,236 |
Amortization of debt discount | — |  |  | 171 |  |  | — |  |  | 508 |
Amortization of debt issuance costs | 69 |  |  | 54 |  |  | 207 |  |  | 159 |
Total interest expense recognized | $ | 481 |  |  | $ | 637 |  |  | $ | 1,443 |  |  | $ | 1,903 |
The following table presents interest expense recognized for the 2024 Notes:
| Three Months Ended |  | Nine Months Ended
(in thousands) | September 30, 2022 |  | October 1, 2021 |  | September 30, 2022 |  | October 1, 2021
Contractual interest expense | $ | 578 |  |  | $ | 578 |  |  | $ | 1,734 |  |  | $ | 1,734 |
Amortization of debt discount | — |  |  | 1,193 |  |  | — |  |  | 3,505 |
Amortization of debt issuance costs | 220 |  |  | 162 |  |  | 654 |  |  | 476 |
Total interest expense recognized | $ | 798 |  |  | $ | 1,933 |  |  | $ | 2,388 |  |  | $ | 5,715 |

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- Definition Tabular disclosure of convertible debt instrument. Includes, but is not limited to, principal amount and amortized premium or discount. + References No definition available. + Details
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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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