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Intangible Assets Goodwill (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 25, 2018
Mar. 31, 2019
Jun. 24, 2018
Goodwill [Line Items]      
Goodwill   $ 530,004 $ 530,004
Power and RF Products      
Goodwill [Line Items]      
Goodwill   349,726  
Goodwill, Acquired During Period $ 248,957    
LED Products      
Goodwill [Line Items]      
Goodwill   $ 180,278