Goodwill and Intangible Assets, Net (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Components of intangible assets with definite lives
Weighted average remaining life (in years)	P3Y3M18D
Gross carrying amount	$ 21,382	$ 89,323
Less: accumulated amortization	(13,492)	(75,593)
Net Carrying Amount	7,890	13,730
Trade names and trademarks [Member]
Components of intangible assets with definite lives
Weighted average remaining life (in years)	P4Y2M12D
Gross carrying amount	14,431	17,030
Less: accumulated amortization	(9,029)	(9,104)
Net Carrying Amount	5,402	7,926
Subscriber relationships [Member]
Components of intangible assets with definite lives
Weighted average remaining life (in years)	P1Y6M
Gross carrying amount	5,617	19,290
Less: accumulated amortization	(3,511)	(14,470)
Net Carrying Amount	2,106	4,820
Technology and other [Member]
Components of intangible assets with definite lives
Weighted average remaining life (in years)	P1Y
Gross carrying amount	1,334	53,003
Less: accumulated amortization	(952)	(52,019)
Net Carrying Amount	$ 382	$ 984

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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A description of the remaining amortization period of a major finite-lived intangible asset class.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 926

-SubTopic 20

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6473108&loc=d3e54445-107959

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