DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, Software and Equipment (Details) |
12 Months Ended |
|---|---|
Dec. 31, 2021 | |
| Computer equipment | |
| Property, Plant and Equipment [Line Items] | |
| PPE useful life | 3 years |
| Furniture and fixtures | |
| Property, Plant and Equipment [Line Items] | |
| PPE useful life | 7 years |
| Internally developed software | |
| Property, Plant and Equipment [Line Items] | |
| PPE useful life | 3 years |