NET LOSS PER SHARE - Basic and Diluted Net Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net loss	$ (81,286)	$ (747,952)
Deemed dividend related to the issuance of Series E convertible preferred stock	0	(2,167,333)
Net loss attributable to common stockholders	(81,286)	(2,915,285)
Net loss attributable to common stockholders	$ (81,286)	$ (2,915,285)
Weighted average shares outstanding - basic (in shares)	1,654,322,379	32,650,874
Weighted average shares outstanding - diluted (in shares)	1,654,322,379	32,650,874
Net loss per share - basic (in dollars per share)	$ (0.05)	$ (89.29)
Net loss per share - diluted (in dollars per share)	$ (0.05)	$ (89.29)