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Acquisitions - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
May 31, 2017
Jan. 07, 2016
Jul. 02, 2017
Jul. 03, 2016
Jul. 02, 2017
Jul. 03, 2016
Business Acquisition [Line Items]            
Income before taxes     $ 38,101 $ 38,192 $ 65,932 $ 54,760
Thinklogical Holdings LLC            
Business Acquisition [Line Items]            
Percentage of outstanding shares acquired 100.00%          
Acquisition price $ 171,300          
Receivables $ 4,355          
Business combination, goodwill, tax deductible amount     57,500   $ 57,500  
Business acquisition, goodwill, tax deductible period         15 years  
Income before taxes     $ 10,200   $ 1,100  
M2FX Limited            
Business Acquisition [Line Items]            
Percentage of outstanding shares acquired   100.00%        
Acquisition price   $ 19,000