Long-Term Debt and Capital Lease Obligations - Other Long-Term Debt and Capital Lease Obligations (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other long-term debt and capital lease obligations
Total	$ 149,246	$ 188,729
Less current portion	(42,663)	(41,903)
Other long-term debt and capital lease obligations, net of current portion	$ 106,583	146,826
Interest rate (as a percent)	7.75%
Capital lease obligations [Member]
Other long-term debt and capital lease obligations
Total	$ 104,318	140,885
Notes payable related to satellite vendor financing and other debt payable in installments through 2025 with interest rates ranging from approximately 1.9% to 12.5%
Other long-term debt and capital lease obligations
Total	$ 44,928	$ 47,844
Notes payable related to satellite vendor financing and other debt payable in installments through 2025 with interest rates ranging from approximately 1.9% to 12.5% | Minimum
Other long-term debt and capital lease obligations
Interest rate (as a percent)	1.90%
Notes payable related to satellite vendor financing and other debt payable in installments through 2025 with interest rates ranging from approximately 1.9% to 12.5% | Maximum
Other long-term debt and capital lease obligations
Interest rate (as a percent)	8.80%