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Convertible Subordinated Notes (Tables) | 6 Months Ended
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Jun. 30, 2020
Convertible Subordinated Notes [Abstract] |
Schedule of Liability and Equity Components of Convertible Subordinated Notes | The carrying values of the liability and equity components of our 2.75% convertible subordinated notes due 2021 (the “Convertible Notes”) at December 31, 2019 and June 30, 2020 are reflected on our Consolidated Balance Sheet as follows (in thousands):
| December 31, 2019 |  |  | June 30, 2020 |
Current liabilities: |  |  |
Principal amount | $ | 6,319 |  |  | $ | 6,319 |
Unamortized discount of liability component | (319 | ) |  | (187 | )
Convertible Notes issuance costs, net of accumulated amortization of $130 and $142, respectively | (29 | ) |  | (17 | )
Carrying value of the liability component | $ | 5,971 |  |  | $ | 6,115 |
Carrying value of the equity component | $ | 789 |  |  | $ | 789 |
The interest expense and accretion of debt discount and debt issuance costs related to our Convertible Notes during the three and six months ended June 30, 2019 and 2020 is as follows (in thousands):
| Three months ended June 30, |  | Six months ended June 30,
| 2019 |  |  | 2020 |  |  | 2019 |  |  | 2020 |
Convertible Notes interest expense | $ | 44 |  |  | $ | 43 |  |  | $ | 87 |  |  | $ | 87 |
Convertible Notes accretion of debt discount | 59 |  |  | 66 |  |  | 117 |  |  | 131 |
Convertible Notes amortization of debt issuance costs | 5 |  |  | 6 |  |  | 11 |  |  | 12 |

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- Definition Convertible Subordinated Notes [Abstract] + References No definition available. + Details
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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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