RESTRUCTURING CHARGES - Schedule of Restructuring Activities (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Restructuring costs | ||
| Employee compensation costs | $ 876 | $ 15,705 |
| Other exit costs | 213 | 2,101 |
| Total restructuring charges | $ 1,089 | $ 17,806 |