Acquisitions (Details) (USD $)			3 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013 Slingo, Inc	Sep. 30, 2013 Muzicall Ltd [Member]	Jun. 30, 2014 Tradenames and Trademarks	Dec. 31, 2013 Tradenames and Trademarks	Jun. 30, 2013 Tradenames and Trademarks Slingo, Inc	Sep. 30, 2013 Developed Technology, tradenames and trademarks and customer relationships [Member] Muzicall Ltd [Member]	Jun. 30, 2013 Developed Technology and Customer Relationships Slingo, Inc
Business Acquisition [Line Items]
Percentage of voting interests acquired			100.00%	100.00%
Payments to acquire businesses			$ 15,600,000	$ 6,700,000
Intangible assets acquired			8,000,000
Indefinite-Lived Intangible Assets (Excluding Goodwill)					4,500,000	4,500,000	4,500,000
Finite-lived intangibles acquired								5,400,000	3,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets Noncurrent				3,400,000
Deferred tax liability			2,700,000
Goodwill	$ 18,005,000	$ 17,476,000	$ 9,900,000	$ 1,300,000