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Acquisitions - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 27, 2015
Sep. 28, 2014
Sep. 27, 2015
Sep. 28, 2014
Apr. 08, 2015
Dec. 31, 2014
Business Acquisition [Line Items]            
Total fair value of consideration           $ 66,300
Initial payment     $ 63,800      
Consideration transferred     1,800      
Transaction expenses $ 200   1,000      
Net revenues 443,714 $ 457,173 1,325,189 $ 1,363,824    
Income (loss) from continuing operations before taxes 62,374 $ 64,912 161,458 $ 167,551    
Truphatek            
Business Acquisition [Line Items]            
Noncontrolling interest         6.00%  
Equity interest held     1,200      
Working capital adjustment related to acquisition     400      
Fair value of minority interest gain     1,000      
Business Combinations 2015            
Business Acquisition [Line Items]            
Total fair value of consideration 66,411   66,411      
Net revenues 4,600   9,900      
Income (loss) from continuing operations before taxes $ 1,100   $ 2,000      
Intellectual Property | Minimum            
Business Acquisition [Line Items]            
Intangible asset useful life     15 years      
Intellectual Property | Maximum            
Business Acquisition [Line Items]            
Intangible asset useful life     20 years      
Customer Lists | Minimum            
Business Acquisition [Line Items]            
Intangible asset useful life     10 years      
Customer Lists | Maximum            
Business Acquisition [Line Items]            
Intangible asset useful life     18 years      
Non-compete Agreements            
Business Acquisition [Line Items]            
Intangible asset useful life     5 years