STOCKHOLDERS' EQUITY DEFICIT - Equity Financing (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended				2 Months Ended	12 Months Ended
	Feb. 28, 2021	Oct. 31, 2020	Nov. 30, 2019	Jun. 30, 2019	Jul. 31, 2021	Dec. 31, 2021	Dec. 31, 2022
Class of Stock [Line Items]
Common stock, par value (in dollars per share)						$ 0.001	$ 0.001
Aggregate sales price					$ 200.0
Proceeds from sale of stock				$ 27.8
Sale of stock, number of units issued (in shares)				20.4
Number of warrants (in shares)				20.4
Stock and warrants price per share (in dollars per share)				$ 1.47
Exercise price per warrant (in dollars per share)				$ 1.47
Expected term				1 year
ATM Facility
Class of Stock [Line Items]
Common stock, par value (in dollars per share)			$ 0.001
Additional shares to be issued	$ 34.5	$ 50.0
Aggregate sales price			$ 35.0
Commission fixed rate			3.00%
Proceeds from sale of stock						$ 175.0
Sale of stock, number of units issued (in shares)						56.9
Weighted-average stock price per share (in dollars per share)						$ 3.17
Issuance of common stock, issuance cost						$ 5.4