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Restructurings - Components of Restructuring Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Restructuring Cost and Reserve [Line Items]        
Total restructuring expense $ 1,430 $ 0 $ 2,022 $ 398
Total Restructuring Expense        
Restructuring Cost and Reserve [Line Items]        
Total restructuring expense 1,596 0 2,188 398
Cost of revenue        
Restructuring Cost and Reserve [Line Items]        
Employee severance and benefits 166 0 166 0
Total restructuring expense 166 0 166 0
Operating expenses        
Restructuring Cost and Reserve [Line Items]        
Employee severance and benefits 1,430 0 2,022 398
Total restructuring expense $ 1,430 $ 0 $ 2,022 $ 398