COMMITMENTS AND CONTINGENCIES - Narrative (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) minimum_payment
Other Commitments [Line Items]
Loss contingency reserve	$ 0
Purchase Commitment - Three Year Cloud Computing
Other Commitments [Line Items]
Purchase obligations	$ 15,600,000
Number of remaining minimum payments | minimum_payment	2
Commercial commitments due in the next twelve months	$ 4,700,000
Commercial commitments due in Year Two	5,600,000
Payments of commercial commitments	5,400,000
Prepaid asset	4,300,000
Purchase Commitments - Advertising
Other Commitments [Line Items]
Commercial commitments due in the next twelve months	$ 23,800,000