Acquisitions And New Ventures - Identifiable Assets Acquired and Liabilities Assumed (Details) - Big Fish Games $ in Thousands	Dec. 16, 2014 USD ($)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable	$ 19,361
Income taxes receivable	18,107
Prepaid expense	9,727
Deferred income taxes	1,682
Other assets	1,780
Property and equipment	14,632
Goodwill	540,306
Other intangible assets	362,863
Total assets acquired	968,458
Accounts payable	9,064
Accrued expense	19,217
Income taxes payable	210
Deferred revenue	37,250
Deferred income taxes	96,238
Other liabilities	2,821
Total liabilities acquired	164,800
Purchase price, net of cash acquired	803,658
Tradename
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other intangible assets	200,000
Customer relationships
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other intangible assets	$ 32,663
Finite-Lived Intangible Asset, Useful Life	3 years
Developed technology
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other intangible assets	$ 87,000
Finite-Lived Intangible Asset, Useful Life	4 years
In-process research & development
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other intangible assets	$ 12,700
Finite-Lived Intangible Asset, Useful Life	5 years
Strategic development
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Other intangible assets	$ 30,500
Finite-Lived Intangible Asset, Useful Life	6 years