Acquisitions And New Ventures Identifiable Assets Acquired and Liabilities Assumed (Details) (Big Fish Games [Member], USD $) In Thousands, unless otherwise specified	Dec. 16, 2014
Big Fish Games [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	$ 19,274
Business Combination, Income Taxes Receivable	18,087
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	9,727
Business Combination, Assets, Deferred Income Taxes	1,708
Business Combination, Other Assets	1,780
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	14,632
Business Acquisition, Goodwill, Expected Tax Deductible Amount	540,331
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	362,863
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	968,402
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable	9,064
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accrued Expenses	19,217
Business Combination, Income Tax Payable	210
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue	37,250
Business Combination, Liabilities, Deferred Income Taxes	96,182
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other	2,821
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	164,744
Future Business Acquisition, Cost Of Acquired Entity, Purchase Price	$ 803,658