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WARRANTS - Narrative (Details)
 1 Months Ended 3 Months Ended
Nov. 04, 2021
shares
Jul. 31, 2018
$ / shares
shares
Mar. 31, 2022
USD ($)
$ / shares
shares
Mar. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
shares
Class of Warrant or Right [Line Items]          
Conversion ratio 1        
Class of warrant or right, outstanding (in shares)     0   0
Preferred stock warrant liability | $     $ 0   $ 0
Marketing expense | $     $ 13,827,000 $ 12,718,000  
July 2018 - Allotment 1          
Class of Warrant or Right [Line Items]          
Exercise price of warrants or rights (in dollars per share) | $ / shares   $ 1.28 $ 1,280    
Warrants issued (in shares)   122,735 122,735    
Percent of warrants to vest immediately upon issuance   50.00%      
Vesting period for warrants or rights   24 months      
July 2018 - Allotment 2          
Class of Warrant or Right [Line Items]          
Exercise price of warrants or rights (in dollars per share) | $ / shares   $ 1.28 $ 1,280    
Warrants issued (in shares)   184,100 184,100    
Vesting period for warrants or rights   36 months      
Class B Common Stock          
Class of Warrant or Right [Line Items]          
Stock issued from conversion of preferred stock (in shares) 1,104,560        
VLL Agreement          
Class of Warrant or Right [Line Items]          
Number of securities called by warrants or rights (in shares)     1,104,560    
Exercise price of warrants or rights (in dollars per share) | $ / shares     $ 0.10    
Fair value of warrants or rights | $     $ 800,000    
West Investments V, LLC | Affiliated Entity          
Class of Warrant or Right [Line Items]          
Marketing expense | $     $ 700,000 $ 100,000