INVESTMENTS - Additional Information (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| INVESTMENTS | ||
| Gross unrealized loss | $ 108 | $ 123 |
| Unrealized loss as a percentage of total amortized costs basis of corporate bond portfolio | 0.39% |