LEASES - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Liabilities | ||
| Current operating lease liabilities | $ 1,978 | $ 2,683 |
| Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Other current liabilities | Other current liabilities |
| Noncurrent operating lease liabilities | $ 397 | $ 2,815 |
| Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other long-term liabilities | Other long-term liabilities |
| Total lease liabilities | $ 2,375 | $ 5,498 |