Property and Equipment - Additional Information (Details)	3 Months Ended
	Mar. 31, 2017 USD ($) satellite	Mar. 31, 2016 USD ($)
Property, Plant and Equipment [Abstract]
Depreciation and amortization expense on property and equipment	$ 65,176,000	$ 55,187,000
Disposal of property and equipment	13,811,000	3,160,000
Capitalized interest costs	$ 718,000	$ 0
Number of owned satellites | satellite	5