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Summary of Significant Accounting Policies - Intangible Assets (Details) £ in Thousands, $ in Thousands	12 Months Ended	18 Months Ended	20 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Jul. 02, 2014 USD ($)	Jul. 31, 2013 USD ($)	May. 11, 2013 USD ($)	May. 11, 2013 GBP (£)
Finite-Lived Intangible Assets [Line Items]
Service revenue since acquisition		$ 33,600	$ 38,200
Intellectual property
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	7 years
Headland Media Limited
Finite-Lived Intangible Assets [Line Items]
Business Combination, Contingent Consideration, Liability					$ 169	$ 24,169	£ 15,576
Service revenue since acquisition	$ 15,000
Headland Media Limited | Subscriber relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	10 years
Headland Media Limited | Distribution rights
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	15 years
Headland Media Limited | Internally developed software
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years
Headland Media Limited | Proprietary Content
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	2 years
Videotel
Finite-Lived Intangible Assets [Line Items]
Business Combination, Contingent Consideration, Liability				$ 47,446
Service revenue since acquisition	$ 23,200
Videotel | Subscriber relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	8 years
Videotel | Internally developed software
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	4 years
Videotel | Proprietary Content
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years
Videotel | Off-Market Favorable Lease
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years

X

- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 35
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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