INCOME TAXES - Schedule of Loss Before Income Taxes by Source (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Income Tax Disclosure [Abstract] | ||
| U.S. | $ (574) | $ (45,327) |
| Outside the U.S. | 21 | (186) |
| Net loss before income taxes | $ (553) | $ (45,513) |