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Related Party Transaction Disclosure Related Party Transactions (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Related Party Transaction [Line Items]        
Equity Method Investment, Ownership Percentage   35.70%    
Equity Method Investee [Member]        
Related Party Transaction [Line Items]        
Related Party Receivable   $ 1,400 $ 1,000  
Equity Method Investee [Member] | Data Services Agreement [Member]        
Related Party Transaction [Line Items]        
Revenue from Related Parties   12,600 9,100  
Equity Method Investee [Member] | Amended Hosting Agreement [Member]        
Related Party Transaction [Line Items]        
Revenue from Related Parties   16,000 13,900  
Hosted Payload and Other Data Services [Member]        
Related Party Transaction [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax   49,969 $ 40,527 $ 9,908
Line of Credit [Member]        
Related Party Transaction [Line Items]        
Line of Credit Facility, Periodic Payment, Principal   54,100    
Forecast [Member] | Equity Method Investee [Member] | Hosting Agreement [Member]        
Related Party Transaction [Line Items]        
Related Party Transaction, Hosting Fees   $ 200,000    
Related Party Transaction, Power Fees per Year $ 3,700      
Related Party Transaction, Data Service Fees $ 19,800