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Other Income and Restructuring Costs - Changes in Accrued Restructuring (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Restructuring Reserve [Roll Forward]      
Provision   $ 515  
Restructuring Plan 2015      
Restructuring Reserve [Roll Forward]      
Balance at beginning of period $ 0    
Provision   344  
Usage   (323)  
Currency translation   (21)  
Balance at end of period   0  
Restructuring Plan 2014      
Restructuring Reserve [Roll Forward]      
Balance at beginning of period 0 47  
Provision   171 $ 370
Usage   (214) (267)
Currency translation   (4) (56)
Balance at end of period   0 47
Restructuring Plan 2014 and Prior      
Restructuring Reserve [Roll Forward]      
Balance at beginning of period 38 56 519
Provision   0 435
Usage (35) (15) (815)
Currency translation (3) (3) (83)
Balance at end of period 0 38 56
Employee severance | Restructuring Plan 2015      
Restructuring Reserve [Roll Forward]      
Balance at beginning of period 0    
Provision   344  
Usage   (323)  
Currency translation   (21)  
Balance at end of period   0  
Employee severance | Restructuring Plan 2014      
Restructuring Reserve [Roll Forward]      
Balance at beginning of period 0 47  
Provision   171 370
Usage   (214) (267)
Currency translation   (4) (56)
Balance at end of period   0 47
Employee severance | Restructuring Plan 2014 and Prior      
Restructuring Reserve [Roll Forward]      
Balance at beginning of period 38 56 519
Provision   0 (11)
Usage (35) (15) (370)
Currency translation (3) (3) (82)
Balance at end of period 0 38 56
Facility-related closing costs | Restructuring Plan 2015      
Restructuring Reserve [Roll Forward]      
Balance at beginning of period 0    
Provision   0  
Usage   0  
Currency translation   0  
Balance at end of period   0  
Facility-related closing costs | Restructuring Plan 2014      
Restructuring Reserve [Roll Forward]      
Balance at beginning of period 0 0  
Provision   0 0
Usage   0 0
Currency translation   0 0
Balance at end of period   0 0
Facility-related closing costs | Restructuring Plan 2014 and Prior      
Restructuring Reserve [Roll Forward]      
Balance at beginning of period 0 0 0
Provision   0 446
Usage 0 0 (445)
Currency translation 0 0 (1)
Balance at end of period $ 0 $ 0 $ 0