STOCKHOLDERS' EQUITY, Common Stock (Details) - USD ($)							12 Months Ended
	Dec. 09, 2022	Oct. 25, 2021	Sep. 03, 2021	Feb. 03, 2021	Aug. 05, 2020	Feb. 21, 2020	Dec. 31, 2022	Dec. 31, 2021	May 27, 2021
Common Stock [Abstract]
Common stock, shares authorized (in shares)							300,000,000	300,000,000
Common stock, par value (in dollars per share)							$ 0.0001	$ 0.0001
Common stock, shares outstanding (in shares)							221,816,930	195,813,817
Common stock, available for issuance (in shares)							29,177,763
Common stock shares sold during the period (in shares)		57,500,000
Common stock issuable under agreement		$ 57,500,000					$ 64,645,289	$ 121,144,103
Proceeds from issuance of common stock		$ 53,800,000					64,645,289	121,144,103
Net proceeds from stock options exercised							175,015	0
Maximum [Member]
Common Stock [Abstract]
Common stock, shares authorized (in shares)									300,000,000
Minimum [Member]
Common Stock [Abstract]
Common stock, shares authorized (in shares)									150,000,000
Underwritten Public Offering [Member]
Common Stock [Abstract]
Proceeds from issuance of common stock	$ 64,600,000
Sale Agreement [Member] | Jefferies LLC [Member] | Maximum [Member]
Common Stock [Abstract]
Common stock issuable under agreement					$ 50,000,000
2020 Sale Agreement [Member] | Jefferies LLC [Member]
Common Stock [Abstract]
Proceeds from issuance of common stock								60,400,000
Sale Agreement, Amended [Member] | Jefferies LLC [Member] | Maximum [Member]
Common Stock [Abstract]
Common stock issuable under agreement				$ 105,400,000
Distribution Agreement [Member] | Raymond James & Associates Inc. [Member]
Common Stock [Abstract]
Common stock issuable under agreement							$ 42,800,000
Proceeds from issuance of common stock								$ 6,900,000
Distribution Agreement [Member] | Raymond James & Associates Inc. [Member] | Maximum [Member]
Common Stock [Abstract]
Common stock issuable under agreement			$ 50,000,000
Common Stock [Member]
Common Stock [Abstract]
Common stock shares sold during the period (in shares)							24,125,873	90,846,029
Common stock issuable under agreement							$ 2,413	$ 9,085
Net proceeds from stock options exercised						$ 200,000
Stock options exercised (in shares)							68,679
Common Stock [Member] | Underwritten Public Offering [Member]
Common Stock [Abstract]
Common stock shares sold during the period (in shares)	24,125,873
Proceeds from issuance of common stock	$ 64,600,000
Common Stock [Member] | 2020 Sale Agreement [Member] | Jefferies LLC [Member]
Common Stock [Abstract]
Common stock shares sold during the period (in shares)								27,805,198
Common Stock [Member] | Distribution Agreement [Member] | Raymond James & Associates Inc. [Member]
Common Stock [Abstract]
Common stock shares sold during the period (in shares)							0	5,540,831