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Convertible Debt (Tables) | 3 Months Ended
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Apr. 02, 2021
Convertible Note due 2022 |
Debt Instrument [Line Items] |
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) | April 2, 2021 |  | December 31, 2020
Liability component: |  |  |
Principal amount | $ | 37,707 |  |  | $ | 37,707 |
Less: Debt discount, net of amortization | (1,191) |  |  | (1,357) |
Less: Debt issuance costs, net of amortization | (373) |  |  | (425) |
Carrying amount | $ | 36,143 |  |  | $ | 35,925 |
Remaining debt discount amortization period (years) | 1.7 |  | 1.9
Effective interest rate on liability component | 6.95 | % |  | 6.95 | %
Convertible Debt Interest | The following table presents interest expense recognized for the 2022 Notes:
| Three months ended
(in thousands) | April 2, 2021 |  | March 27, 2020
Contractual interest expense | $ | 412 |  |  | n/a
Amortization of debt discount | 166 |  |  | n/a
Amortization of debt issuance costs | 52 |  |  | n/a
Total interest expense recognized | $ | 630 |  |  | n/a
Convertible Note due 2024 |
Debt Instrument [Line Items] |
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments | The following table presents the components of the 2024 Notes:
| As of
(in thousands, except for years and percentages) | April 2, 2021 |  | December 31, 2020
Liability component: |  |  |
Principal amount | $ | 115,500 |  |  | $ | 115,500 |
Less: Debt discount, net of amortization | (18,153) |  |  | (19,294) |
Less: Debt issuance costs, net of amortization | (2,463) |  |  | (2,624) |
Carrying amount | $ | 94,884 |  |  | $ | 93,582 |
Remaining debt discount amortization period (years) | 3.4 |  | 3.7
Effective interest rate on liability component | 7.95 | % |  | 7.95 | %
Convertible Debt Interest | The following table presents interest expense recognized for the 2024 Notes:
| Three months ended
(in thousands) | April 2, 2021 |  | March 27, 2020
Contractual interest expense | $ | 578 |  |  | $ | 578 |
Amortization of debt discount | 1,146 |  |  | 1,058 |
Amortization of debt issuance costs | 156 |  |  | 144 |
Total interest expense recognized | $ | 1,880 |  |  | $ | 1,780 |

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- Definition Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder. Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + 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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