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Income Taxes - Altera Corp and Singapore Operations (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Feb. 28, 2016
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Income Taxes        
Income tax benefit   $ 29,811 $ 3,002 $ 677
Reversal of deferred tax liability   (39,400)    
Altera decision        
Income Taxes        
Income tax benefit $ 22,000      
Singapore        
Income Taxes        
Income tax benefit   $ (11,000) $ (7,700) $ (14,400)
Income tax benefit (Expense) per diluted share (in dollars per share)   $ 0.25 $ 0.18 $ 0.34