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Property and Equipment and Intangible Assets - Estimated Future Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Intangible Assets
Intangible Assets	$ 753,582	$ 128,220
Accumulated Amortization	(211,037)	(118,166)
Amortization expense	93,000	7,000	$ 10,000
Goodwill		126,000
Estimated future amortization of identifiable intangible assets
2021	157,105
2022	130,198
2023	127,809
2024	69,512
2025	11,676
Thereafter	46,245
Total	542,545
Wireless
Intangible Assets
Goodwill	$ 218,000
Minimum
Intangible Assets
Useful life	5 years
Maximum
Intangible Assets
Useful life	20 years
Technology-based
Intangible Assets
Intangible Assets	$ 63,078	63,077
Accumulated Amortization	(58,453)	(57,414)
Trademarks
Intangible Assets
Intangible Assets	133,428	37,010
Accumulated Amortization	(40,283)	(32,619)
Contract-based
Intangible Assets
Intangible Assets	41,500	4,500
Accumulated Amortization	(23,000)	(4,500)
Customer relationships
Intangible Assets
Intangible Assets	515,576	23,633
Accumulated Amortization	$ (89,301)	$ (23,633)