CONVERTIBLE PREFERRED STOCK WARRANT LIABILITY - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Feb. 28, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Jul. 23, 2021	Sep. 30, 2017
Class of Warrant or Right [Line Items]
Number of warrants (in shares)					85,750,000	2
Number of shares called by warrants (in shares)						1,546,799
Warrant exercise price (in dollars per share)	$ 1.94				$ 11.50	$ 1.94
Proceeds from the exercise of public warrants	$ 3,000			$ 173,300
Issuance of Series D convertible preferred stock upon exercise of warrants	$ 12,900
Change in fair value of convertible preferred stock warrant liability
Class of Warrant or Right [Line Items]
Change in fair value of preferred stock warrant liability		$ 0	$ 6,976