Long-Term Debt - Other Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other long-term debt and capital lease obligations
Total	$ 115,827	$ 153,491
Less current portion	(38,613)	(38,832)
Other long-term debt and capital lease obligations, net of current portion	77,214	114,659
Capital lease obligations.
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 of approximately 6%
Other long-term debt and capital lease obligations
Total	$ 11,509	$ 12,606
Interest rate (as a percent)	6.00%