INCOME TAXES - Schedule of Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S. federal statutory income tax rate	21.00%	21.00%
State and local taxes, net of federal benefit	1.60%	5.10%
Permanent differences	(4.20%)	0.00%
Research and development credits	1.60%	3.70%
Change in valuation allowance	(19.80%)	(29.80%)
Other	(0.20%)	0.00%
Effective income tax rate	0.00%	0.00%