Fair Value Of Assets And Liabilities - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate, fair value input		2.80%
Increase in fair values of Big Fish Games deferred payment and earnout liability		$ 21,700
Big Fish Games deferred payment		28,428	$ 0	$ 0
Amount one-percentage point change in discount rate would increase or decrease the fair value of Big Fish Games deferred payment and earnout liability		2,500
Long-term debt	$ 765,532	765,532	752,854
Unsecured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt	600,000	600,000
Fair value of long-term debt	604,100	604,100	$ 299,300
Big Fish Games
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Big Fish Games deferred payment	$ 28,400	$ 28,400