Quarterly report pursuant to Section 13 or 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
Jun. 30, 2018
Dec. 31, 2017
Property, Plant and Equipment [Line Items]    
Construction in progress $ 347,196 $ 301,153
Satellite system    
Property, Plant and Equipment [Line Items]    
Construction in progress 231,047 183,243
Terrestrial repeater network    
Property, Plant and Equipment [Line Items]    
Construction in progress 2,972 2,515
Capitalized software and hardware    
Property, Plant and Equipment [Line Items]    
Construction in progress 95,555 94,456
Other    
Property, Plant and Equipment [Line Items]    
Construction in progress $ 17,622 $ 20,939