INCOME (LOSS) PER SHARE - Schedule of Net Income (Loss) Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net income (loss)	$ 2,803	$ 13,031
Minus: Income allocated to participating securities	0	11,366
Net income (loss) attributable to common stockholders – basic	2,803	1,665
Plus: Income allocated to non-participating securities	0	525
Net income (loss) attributable to common stockholders - diluted	$ 2,803	$ 2,190
Denominator:
Basic weighted-average common shares outstanding (in shares)	146,526,370	18,378,777
Dilutive potential common stock issuable:
Diluted weighted-average shares outstanding (in shares)	153,036,804	25,904,338
Net income (loss) attributable to common stockholders per share
Basic (in dollars per share)	$ 0.02	$ 0.09
Diluted (in dollars per share)	$ 0.02	$ 0.08
Stock options
Dilutive potential common stock issuable:
Stock options (in shares)	5,813,101	7,377,608
Restricted stock units
Dilutive potential common stock issuable:
Stock options (in shares)	624,938	0
Common Stock
Dilutive potential common stock issuable:
Stock warrants (in shares)	72,395	73,804
Preferred Stock
Dilutive potential common stock issuable:
Stock warrants (in shares)	0	74,149