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Segment and Customer Concentration Information - Narrative (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Revenue from contract with customer benchmark | Customer Concentration Risk | Largest Customer        
Concentration Risk [Line Items]        
Percentage of revenue (as percent) 45.00% 66.00% 64.00% 43.00%