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SEGMENT INFORMATION - Narrative (Details) - product
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Disaggregation of Revenue [Line Items]    
Number of products represented of total revenue 10 10
Product Concentration Risk | Revenues    
Disaggregation of Revenue [Line Items]    
Concentration risk percentage 40.00% 40.00%