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Debt (Tables) | 3 Months Ended
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Mar. 31, 2021
Debt Disclosure [Abstract] |
Schedule of Carrying Value of Debt | The Company’s carrying value of debt consisted of the following (in thousands):
| March 31, 2021 |  | December 31, 2020
Unsecured promissory note | $ | 1,080 |  |  | $ | 1,080 |
Secured term note payable - related party | 1,077 |  |  | 1,077 |
Secured promissory note - related party | 4,438 |  |  | 5,000 |
Insurance and other notes payable | 418 |  |  | 714 |
Less: amounts due within one year | (4,253) |  |  | (4,463) |
Total long-term debt | $ | 2,760 |  |  | $ | 3,408 |
Schedule Of Interest Expense On Debt | During the three months ended March 31, 2021 and 2020, the Company recorded interest expense on debt as follows (in thousands):
| March 31, 2021 |  | March 31, 2020
Unsecured promissory note | $ | — |  |  | $ | — |
Secured term note payable - related party | 10 |  |  | 25 |
Secured promissory note - related party | 154 |  |  | 215 |
Insurance and other notes payable | 14 |  |  | 11 |
Total interest expense | $ | 178 |  |  | $ | 251 |

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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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