LONG-TERM DEBT - Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
|
| Debt Disclosure [Abstract] | ||||
| Interest expense | $ 4 | $ 13 | $ 6 | $ 20 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The net amount of nonoperating interest income (expense). No definition available.
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