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Nonvoting Interest Prior To Share Exchange

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands		12 Months Ended
	Feb. 20, 2014	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative Financial Instruments
Derivative financial instruments				$ 557,000
Impairment of Long-Lived Assets
Impairment of long-lived assets		$ 145,918		125,752
Research and Development
Research and development cost		$ 33,000	$ 41,000	46,000
Minimum
Marketable Investment Securities
Length of time an investment has been in a continuous loss position in which the decline in value would be evaluated on a case by case basis to determine if the decline in value is other-than-temporary			6 months
Length of time an investment has been in a continuous loss position in which the decline in value is considered other-than-temporary			9 months
Property and Equipment
Estimated Useful Life			1 year
Business Combinations
Acquired intangible assets, average finite useful life			1 year
Revenue Recognition
Period of deferral for the portion of subscriber fees that are deferred			4 years
Maximum
Marketable Investment Securities
Length of time an investment has been in a continuous loss position in which the decline in value is considered as temporary			6 months
Length of time an investment has been in a continuous loss position in which the decline in value would be evaluated on a case by case basis to determine if the decline in value is other-than-temporary			9 months
Property and Equipment
Estimated Useful Life			40 years
Business Combinations
Acquired intangible assets, average finite useful life			20 years
Revenue Recognition
Period of deferral for the portion of subscriber fees that are deferred			5 years
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
D1
Impairment of Long-Lived Assets
Impairment of long-lived assets				$ 123,000