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Acquisitions - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
May 31, 2017
Jan. 07, 2016
Oct. 01, 2017
Oct. 02, 2016
Oct. 01, 2017
Oct. 02, 2016
Business Acquisition [Line Items]            
Revenues     $ 621,745 $ 601,109 $ 1,783,759 $ 1,744,237
Loss before taxes     10,188 $ (38,467) (55,744) $ (93,227)
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     41,000   $ 41,000  
Business acquisition, goodwill, tax deductible period         15 years  
Revenues     11,600   $ 21,800  
Loss before taxes     $ 2,700   $ 1,700  
M2FX Limited            
Business Acquisition [Line Items]            
Percentage of outstanding shares acquired   100.00%        
Acquisition price   $ 19,000