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Acquisition of J-Devices (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Dec. 30, 2015
Dec. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Jan. 30, 2015
Business Acquisition [Line Items]          
Payments to acquire investment     $ 0 $ 12,908  
Goodwill   $ 19,443 $ 20,840    
J-Devices [Member]          
Business Acquisition [Line Items]          
Payments to acquire investment   $ 105,400      
Ownership interest in acquiree (percent) 100.00%        
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination $ 273,100        
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value 167,700        
Goodwill $ 19,400        
J-Devices [Member]          
Business Acquisition [Line Items]          
Ownership Interest (percent)         65.70%
Minimum ownership threshold to obtain control 80.00%