PROPERTY AND EQUIPMENT - Schedule of Property, Plant and Equipment (Useful Lives) (Details)	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Useful life	3 years
Minimum
Property, Plant and Equipment [Line Items]
Useful life	2 years
Minimum | Software
Property, Plant and Equipment [Line Items]
Useful life	3 years
Minimum | Furniture and equipment
Property, Plant and Equipment [Line Items]
Useful life	2 years
Minimum | Internal support equipment
Property, Plant and Equipment [Line Items]
Useful life	2 years
Maximum
Property, Plant and Equipment [Line Items]
Useful life	5 years
Maximum | Software
Property, Plant and Equipment [Line Items]
Useful life	5 years
Maximum | Furniture and equipment
Property, Plant and Equipment [Line Items]
Useful life	5 years
Maximum | Internal support equipment
Property, Plant and Equipment [Line Items]
Useful life	4 years