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Revenue and Accounts Receivable, Net - Trade Receivables Associated with Significant Customers (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Revenue, Major Customer [Line Items]    
Accounts receivable, net $ 129,433 $ 139,198
Trade receivables | Comcast Corporation | Customer concentration risk    
Revenue, Major Customer [Line Items]    
Accounts receivable, net $ 19,782 $ 0
Concentration risk percentage 15.30% 0.00%
Trade receivables | Dish Network Corporation | Customer concentration risk    
Revenue, Major Customer [Line Items]    
Accounts receivable, net $ 0 $ 14,677
Concentration risk percentage 0.00% 10.50%