CONVERTIBLE PREFERRED STOCK WARRANT LIABILITY	3 Months Ended
	Mar. 31, 2022
Warrants and Rights Note Disclosure [Abstract]
CONVERTIBLE PREFERRED STOCK WARRANT LIABILITY	CONVERTIBLE PREFERRED STOCK WARRANT LIABILITYIn March and September 2017, the Company issued two convertible preferred stock warrants to purchase a total of 1,546,799 shares of Series D convertible preferred stock, with an exercise price of $1.94 per share. The convertible preferred stock warrants had been recorded at fair value using a Monte-Carlo simulation at issuance and had been subsequently remeasured to fair value each reporting period with the changes recorded in the condensed consolidated statements of operations. In February 2021, all the outstanding warrants were settled in its entirety at an exercise price of $1.94 per share for an aggregate purchase price of $3.0 million. Upon final settlement, the Company converted the warrant into $12.9 million Series D convertible preferred stock, and recorded $7.0 million losses related to fair value remeasurements of the warrants in the condensed consolidated statements of operations for the three months ended March 31, 2021.