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SEGMENT REPORTING - Schedule of Customer Concentration Risk (Details) - Customer Concentration Risk
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
A | Revenue    
Concentration Risk [Line Items]    
Concentration risk, percentage 12.00%  
A | Revenue from Contract with Customer, Segment Benchmark    
Concentration Risk [Line Items]    
Concentration risk, percentage 39.00%  
B | Revenue    
Concentration Risk [Line Items]    
Concentration risk, percentage   42.00%
B | Revenue from Contract with Customer, Segment Benchmark    
Concentration Risk [Line Items]    
Concentration risk, percentage   51.00%
Blockcap | Revenue    
Concentration Risk [Line Items]    
Concentration risk, percentage   21.00%
Blockcap | Revenue from Contract with Customer, Segment Benchmark    
Concentration Risk [Line Items]    
Concentration risk, percentage   25.00%