Property and Equipment (Details 4) - Satellites	9 Months Ended
	Sep. 30, 2016 satellite mi
Property and equipment
Number of satellites utilized in geostationary orbit approximately 22,300 miles above the equator	18
Length of satellites utilized in geosynchronous orbit above the equator (in miles) | mi	22,300
Number of satellites utilized under capital lease	3
Number of satellites utilized under operating lease	1