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Restructuring Charges - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Oct. 03, 2015
Oct. 01, 2016
Oct. 03, 2015
Jan. 02, 2016
Restructuring Cost and Reserve [Line Items]        
Employee termination benefit costs, pretax $ 1,081   $ 7,074  
Employee termination benefit costs, after tax 660   4,315  
Liability for restructuring   $ 30   $ 1,809
Payments   1,639    
Provision   $ 140    
Cost of Revenues        
Restructuring Cost and Reserve [Line Items]        
Employee termination benefit costs, pretax (46)   1,652  
Selling, General and Administrative Expenses        
Restructuring Cost and Reserve [Line Items]        
Employee termination benefit costs, pretax $ 1,127   $ 5,422