Annual report pursuant to Section 13 and 15(d)

Property and Equipment - Schedule of Construction in Progress (Details)

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Property and Equipment - Schedule of Construction in Progress (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]    
Construction in progress $ 301,153 $ 144,954
Satellite system    
Property, Plant and Equipment [Line Items]    
Construction in progress 183,243 43,977
Terrestrial repeater network    
Property, Plant and Equipment [Line Items]    
Construction in progress 2,515 1,139
Capitalized software and hardware    
Property, Plant and Equipment [Line Items]    
Construction in progress 94,456 82,204
Other    
Property, Plant and Equipment [Line Items]    
Construction in progress $ 20,939 $ 17,634