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Stock-Based Compensation (Details 2) (USD $) In Thousands	3 Months Ended		9 Months Ended
Stock-Based Compensation (Details 2) (USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Stock-Based Compensation
Allocated share-based compensation expense	$ 6,700	$ 3,116	$ 25,595	$ 12,326
Subscriber-related
Stock-Based Compensation
Allocated share-based compensation expense	335	227	1,652	910
General and administrative
Stock-Based Compensation
Allocated share-based compensation expense	$ 6,365	$ 2,889	$ 23,943	$ 11,416

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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