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SUBSEQUENT EVENTS (Details) - Subsequent events
Jul. 06, 2021
USD ($)
director
shares
Jul. 29, 2021
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of non-executive directors | director 4  
Vesting period 2 years  
Upfront payment   $ 26,000,000
Non-Executive Directors | Common Class D [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share based Compensation Arrangement By Share based Payment Award Restricted Stock Vested Number Of Shares | shares 9,671  
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures $ 50,000