STOCKHOLDERS' EQUITY - WARRANT EXERCISES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Class of Warrant or Right [Line Items]
Proceeds from exercise of warrants	$ 105,912,000	$ 15,163,000	$ 2,479,000
Common stock outstanding warrants to purchase	53,904,980
Pre-Funded Warrants
Class of Warrant or Right [Line Items]
Warrants exercise price	$ 0.001
Common stock outstanding warrants to purchase	51,430,477
2020 Public Offering of Common Stock and Warrants | 2020 Pre-Funded Warrant
Class of Warrant or Right [Line Items]
Warrants to purchase common stock, shares		8,335,239
2020 Public Offering of Common Stock and Warrants | Stock Purchase Warrants
Class of Warrant or Right [Line Items]
Warrants exercise price	$ 1.3
Common stock outstanding warrants to purchase	2,474,503
Warrants expiration date	Dec. 31, 2025
Underwritten Public Offering | 2020 Stock Purchase Warrant
Class of Warrant or Right [Line Items]
Warrants to purchase common stock exercised, shares		11,663,387
Proceeds from exercise of warrants		$ 15,163,000
Warrants to purchase common stock, shares		44,110,079
Underwritten Public Offering | Stock Purchase Warrants
Class of Warrant or Right [Line Items]
Warrants to purchase common stock exercised, shares	77,349,859
Proceeds from exercise of warrants	$ 105,912,000