Summary Of Significant Accounting Policies - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Amortization	$ 50,847	$ 58,149	$ 61,041
Provisions for doubtful accounts	2,009	1,304	2,104
Net foreign exchange gains (losses)	$ 77	$ 486	$ (1,649)
Minimum [Member]
Semiconductor product licenses, term	24 months
Property and equipment, estimated useful lives (years)	1 year
Maximum [Member]
Semiconductor product licenses, term	36 months
Property and equipment, estimated useful lives (years)	40 years
Customer Concentration Risk [Member]
Number of customers with more than five percent of revenue	0	0	0