Property and Equipment - Schedule of Construction in Progress (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Construction in progress	$ 145,431	$ 101,324
Satellite system
Property, Plant and Equipment [Line Items]
Construction in progress	19,313	12,912
Terrestrial repeater network
Property, Plant and Equipment [Line Items]
Construction in progress	692	25,578
Capitalized software
Property, Plant and Equipment [Line Items]
Construction in progress	101,554	37,064
Other
Property, Plant and Equipment [Line Items]
Construction in progress	$ 23,872	$ 25,770