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Segment and Geographic Information - Customers by Percentage of Total Revenue (Details) - customer
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2021
Dec. 31, 2020
Disclosure of major customers [line items]      
Number of customers per segment 1    
Customer Concentration Risk | CCS Segment Customer      
Disclosure of major customers [line items]      
Number of customers 2 2 2
Revenue | Customer Concentration Risk | Cisco Systems      
Disclosure of major customers [line items]      
Percentage of revenue attributable to customer (percent) 12.00%