Property and Equipment - Schedule of Construction in Progress (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Property Plant And Equipment [Line Items]
Construction in progress	$ 98,720	$ 101,324
Satellite system
Property Plant And Equipment [Line Items]
Construction in progress	0	12,912
Terrestrial repeater network
Property Plant And Equipment [Line Items]
Construction in progress	1,037	25,578
Capitalized software
Property Plant And Equipment [Line Items]
Construction in progress	74,628	37,064
Other
Property Plant And Equipment [Line Items]
Construction in progress	$ 23,055	$ 25,770