OTHER ASSETS - Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Jun. 21, 2016
Interest and Other Income
Other Investment Not Readily Marketable [Line Items]
Realized gain on investment	$ 27,300,000	$ 27,300,000
Minimum
Other Investment Not Readily Marketable [Line Items]
Potential stock received upon conversion of investment (shares)			0
Prepaid expenses and other current assets
Other Investment Not Readily Marketable [Line Items]
Assigned value of preferred shares	$ 0	$ 0	$ 0