Business Combinations and Acquisitions of Noncontrolling Interests Business Combinations (Details) (USD $)	12 Months Ended						8 Months Ended		12 Months Ended		5 Months Ended		12 Months Ended		1 Months Ended		3 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2010 City Deal [Member]		Dec. 31, 2012 City Deal [Member]	Jun. 30, 2010 City Deal [Member]	Dec. 31, 2010 Qpod [Member]		Dec. 31, 2012 Qpod [Member]	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2010 Purchase of additional interests, Stock [Member]	May 31, 2010 Purchase of additional interests, Stock [Member]	Jun. 30, 2010 Purchase of additional interests, Stock [Member]
Business Combination, Consideration Transferred [Abstract]
Business Acquisition, Cash Paid	$ 49,013,000		$ 18,313,000		$ 16,800,000					$ 600,000	$ 10,200,000
Business Acquisition, Cost of Acquired Entity, Liabilities Incurred	2,485,000
Business Acquisition, Equity Interests Issued and Issuable			11,067,000		18,000,000					125,400,000
Business Acquisition, Contingent Consideration	3,400,000		17,755,000
Business Combination, Noncontrolling interests			593,000		4,200,000						(8,500,000)
Business Combination, Consideration Transferred	54,898,000		47,728,000		39,000,000						18,700,000
Business Acquisition, Percentage of Voting Interests Acquired											55.10%
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares															21,600,000	19,800,000	41,400,000
Long-term Debt, Gross							25,000,000
Long Term Debt, portion required by each entity							12,500,000
Debt Instrument, Interest Rate, Stated Percentage							5.00%
Business Acquisition, Purchase Price Allocation [Abstract]
Purchase Price Allocation, acquired cash	2,100,000		3,900,000		14,100,000		6,400,000				11,000,000
Purchase Price Allocation, net working capital	1,750,000		3,734,000		11,544,000		7,331,000				10,384,000
Purchase Price Allocation, property and equipment	165,000		132,000		266,000		746,000				31,000
Purchase Price Allocation, goodwill	39,170,000		36,539,000		21,464,000		94,992,000				7,031,000
Purchase Price Allocation, subscriber relationships	170,000	[1]	5,990,000	[1]	4,390,000	[1]	28,438,000	[1]			1,000,000	[1]
Purchase Price Allocation, merchant relationships	1,500,000	[1]			290,000	[1]	5,786,000	[1]			200,000	[1]
Purchase Price Allocation, developed technology	14,350,000	[1]	3,547,000	[1]	920,000	[1]	985,000	[1]			60,000	[1]
Purchase Price Allocation, trade names			370,000	[1]	110,000	[1]	5,048,000	[1]			20,000	[1]
Purchase Price Allocation, deferred tax liability	(2,207,000)		(2,584,000)				(9,344,000)
Purchase Price Allocation, due to related party							(7,962,000)
Purchase Price	54,898,000		47,728,000		38,984,000		126,020,000				18,726,000
Finite-Lived Intangible Asset, Useful Life	5 years													1 year
Business Acquisition, Pro Forma Information [Abstract]
Business Acquisition, Pro Forma Revenue							89,300,000		314,426,000		11,800,000		312,984,000
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax									(448,861,000)				(422,256,000)
Business Acquisition, Pro Forma Net Income (Loss)							126,600,000		(442,146,000)		45,000,000		(415,331,000)
Business Acquisition, Pro Forma Loss, Noncontrolling Interest									27,986,000				23,746,000
Business Acquisition, Pro Forma Loss, Parent									$ (414,160,000)				$ (391,585,000)

[1] Acquired intangible assets have estimated useful lives of between 1 and 5 years.