Long-Term Debt (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
|
| Debt Disclosure [Abstract] | ||
| Interest expense | $ 2 | $ 7 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The net amount of nonoperating interest income (expense). No definition available.
|