STOCKHOLDERS' EQUITY - Equity Financing (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		2 Months Ended	3 Months Ended	6 Months Ended
	Nov. 29, 2021	Jul. 31, 2021	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2022	Dec. 31, 2021	Nov. 29, 2019
Class of Stock [Line Items]
Common stock, par value (in dollars per share)					$ 0.001	$ 0.001
ATM Facility
Class of Stock [Line Items]
Common stock, par value (in dollars per share)							$ 0.001
Aggregate sales price		$ 200.0
Shares reserved for future issuance amount					$ 97.8
Commission fixed rate	3.00%
Proceeds from sale of stock			$ 64.3	$ 136.8
Sale of stock, number of units issued (in shares)			16.5	47.1
Weighted-average stock price per share (in dollars per share)			$ 4.02	$ 2.99
Issuance of common stock, issuance cost			$ 2.0	$ 4.2