Quarterly report pursuant to Section 13 or 15(d)

Entity Level Information - Percentage of Total Revenues (Details)

v3.21.1
Entity Level Information - Percentage of Total Revenues (Details) - Revenues - Customer Concentration
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Revenues From External Customers And Long Lived Assets [Line Items]    
Concentration risk percentage 80.00% 86.00%
Customer A    
Revenues From External Customers And Long Lived Assets [Line Items]    
Concentration risk percentage 34.00% 25.00%
Customer B    
Revenues From External Customers And Long Lived Assets [Line Items]    
Concentration risk percentage 13.00% 17.00%
Customer C    
Revenues From External Customers And Long Lived Assets [Line Items]    
Concentration risk percentage   17.00%
Customer D    
Revenues From External Customers And Long Lived Assets [Line Items]    
Concentration risk percentage 11.00% 12.00%
Customer E    
Revenues From External Customers And Long Lived Assets [Line Items]    
Concentration risk percentage 22.00% 15.00%