Property and Equipment - Depreciation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Total depreciation expense	$ 129,822	$ 122,374	$ 392,077	$ 361,619
Capitalized interest	7,261	6,062	20,839	16,418
Satellites
Property, Plant and Equipment [Line Items]
Total depreciation expense	32,073	32,620	96,220	96,650
Finance lease amortization expense	7,203	6,377	20,421	19,269
Total depreciation expense	$ 39,276	$ 38,997	$ 116,641	$ 115,919