Acquisitions And New Ventures Identifiable Assets Acquired and Liabilities Assumed (Details) - Big Fish Games [Member] $ in Thousands	Dec. 16, 2014 USD ($)
Business Acquisition [Line Items]
Accounts receivable	$ 19,361
Income taxes receivable	18,107
Prepaid expenses	9,727
Deferred income taxes	1,682
Other assets	1,780
Property and equipment	14,632
Goodwill	540,744
Other intangible assets	362,863
Total assets acquired	968,896
Accounts payable	9,064
Accrued expenses	19,217
Income taxes payable	210
Deferred revenue	37,250
Deferred income taxes	96,676
Other liabilities	2,821
Total liabilities acquired	165,238
Purchase price, net of cash acquired	$ 803,658