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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands		3 Months Ended
	Feb. 28, 2017	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Accounting policy disclosures
Costs capitalized under the programs during the period		$ 41,000
Amortization expense related to the programs		3,000
Total costs capitalized		52,000
Deferred taxes		2,112,421		$ 2,019,538
Research and Development
Research and development cost		$ 6,000	$ 7,000
Northstar Manager LLC
Variable Interest Entity
Number of years after wireless spectrum license is granted until put right vests		5 years
SNR Wireless Management LLC
Variable Interest Entity
Number of years after wireless spectrum license is granted until put right vests		5 years
Sling TV Holding L.L.C.
Accounting policy disclosures
Nonvoting Interest Prior To Share Exchange	10.00%
Satellite and Tracking Stock Transaction \| DISH Investors \| EchoStar
Accounting policy disclosures
Preferred tracking stock issued by related party	6,290,499
Satellite and Tracking Stock Transaction \| DISH Investors \| HSSC
Accounting policy disclosures
Preferred tracking stock issued by related party	81.128