COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Purchase commitment renewal period	2 years
Purchase commitment renewal option notice	2 months
Quarterly purchase commitment		$ 5,000,000
Annual purchase commitment		$ 20,000,000