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Acquisition - Narrative (Details)
$ / shares in Units, € in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Apr. 04, 2016
USD ($)
Apr. 04, 2016
EUR (€)
Oct. 01, 2016
USD ($)
$ / shares
Apr. 02, 2016
USD ($)
Oct. 03, 2015
$ / shares
Oct. 01, 2016
USD ($)
$ / shares
Oct. 03, 2015
$ / shares
Jan. 02, 2016
USD ($)
Business Acquisition [Line Items]                
Acquisition transaction costs           $ 1,832    
Net Income per diluted Share (in dollars per share) | $ / shares     $ 0.82   $ 0.78 $ 2.19 $ 2.16  
Goodwill     $ 157,719     $ 157,719   $ 119,051
Revolving Credit Facility [Member]                
Business Acquisition [Line Items]                
Proceeds from borrowings       $ 41,046        
Euro-Denominated Borrowing [Member] | Revolving Credit Facility [Member]                
Business Acquisition [Line Items]                
Proceeds from borrowings       $ 29,866        
PAAL [Member]                
Business Acquisition [Line Items]                
Payments to acquire businesses $ 56,617 € 49,713            
Revenue     $ 13,607     $ 28,760    
Net Income per diluted Share (in dollars per share) | $ / shares     $ 0.10     $ (0.05)    
Acquisition costs per share (in dollars per share) | $ / shares     $ 0.01     0.15    
One-time charges associated with acquired inventory and backlog per share (in dollars per share) | $ / shares           $ 0.12    
Goodwill 38,561              
Weighted average useful life of acquired intangible assets           12 years    
PAAL [Member] | Customer Relationships [Member]                
Business Acquisition [Line Items]                
Definite-lived intangible assets acquired 15,831              
Weighted average useful life of acquired intangible assets           13 years    
PAAL [Member] | Intellectual Property [Member]                
Business Acquisition [Line Items]                
Definite-lived intangible assets acquired 4,203              
Weighted average useful life of acquired intangible assets           9 years    
PAAL [Member] | Trademarks [Member]                
Business Acquisition [Line Items]                
Definite-lived intangible assets acquired 2,278              
Weighted average useful life of acquired intangible assets           14 years    
PAAL [Member] | Other Intangibles [Member]                
Business Acquisition [Line Items]                
Definite-lived intangible assets acquired $ 2,379