NATURE OF BUSINESS AND BASIS OF PRESENTATION (Details) $ in Thousands			3 Months Ended	9 Months Ended
	Feb. 03, 2020 USD ($) shares	Jan. 21, 2020	Mar. 31, 2020 USD ($)	Sep. 30, 2020 shares
Subsidiary, Sale of Stock [Line Items]
Reverse stock split		3.01581
Number of options exercised (in shares)				51,076
Gross proceeds | $			$ 212,101
IPO
Subsidiary, Sale of Stock [Line Items]
Number of shares sold	12,174,263
Number of options exercised (in shares)	1,587,947
Gross proceeds | $	$ 231,311
Proceeds from stock issuance, net | $	$ 212,101
Number of shares issued upon conversion	21,499,770