NET LOSS PER SHARE - Calculation of Basic and Diluted Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Numerator [Abstract]
Net income (loss)	$ (24,804)	$ 2,016
Less: Earnings attributable to participating securities	0	(1,583)
Less: Earnings attributable to participating securities	0	(1,583)
Net loss attributable to common stockholders - basic	(24,804)	433
Net loss attributable to common stockholders - diluted	$ (24,804)	$ 433
Denominator [Abstract]
Weighted-average number of common shares outstanding—basic (in shares)	108,762,540	5,206,474
Weighted average effect of potentially dilutive securities:
Effect of potentially dilutive preferred stock (in shares)	0	3,333,119
Effect of potentially dilutive stock options to purchase common stock (in shares)	0	971,920
Effect of potentially dilutive warrants to purchase common stock (in shares)	0	74,342
Effect of potentially dilutive warrants to purchase preferred stock (in shares)	0	523
Weighted-average number of common shares outstanding—diluted (in shares)	108,762,540	9,586,378
Net income (loss) per share attributable to common stockholders
Net income (loss) per common share attributable to common stockholders - basic (USD per share)	$ (0.23)	$ 0.08
Net income (loss) per common share attributable to common stockholders - diluted (USD per share)	$ (0.23)	$ 0.05