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Segment And Geographic Information Schedule of Operating Income (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2017
USD ($)
segment
Mar. 31, 2016
USD ($)
Segment Reporting Information [Line Items]    
Revenues $ 67,255 $ 59,977
Operating Expenses 107,150 33,822
Operating Income (Loss) $ (39,895) 26,155
Number of reportable segments | segment 2  
Operating Segments | Semiconductor and IP Licensing Segment    
Segment Reporting Information [Line Items]    
Revenues $ 39,554 50,133
Operating Expenses 22,763 19,477
Operating Income (Loss) 16,791 30,656
Operating Segments | Product Licensing Segment    
Segment Reporting Information [Line Items]    
Revenues 27,701 9,844
Operating Expenses 43,182 3,251
Operating Income (Loss) (15,481) 6,593
Segment Reconciling Items    
Segment Reporting Information [Line Items]    
Operating Expenses 41,205 11,094
Operating Income (Loss) $ (41,205) $ (11,094)