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Employee Benefit Plans (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Jan. 03, 2014
Dec. 28, 2012
Dec. 30, 2011
Change in Plan Assets:      
Employer contributions $ 270,000 $ 284,000 $ 150,000
Swiss Plan [Member]
      
Change in Projected Benefit Obligation:      
Projected benefit obligation, beginning of period 4,853 4,710  
Service Cost 320 301 414
Interest cost 101 116 127
Participant contributions 239 234  
Benefits paid (157) (639)  
Actuarial (gain) loss on obligation (173) 131  
Projected benefit obligation, end of period 5,183 4,853 4,710
Change in Plan Assets:      
Plan assets at fair value, beginning of period 3,053 3,058  
Actual return on plan assets (including foreign currency impact) 144 166  
Employer contributions 239 234  
Participant contributions 239 234  
Benefits paid (158) (639)  
Plan assets at fair value, end of period 3,517 3,053 3,058
Funded status (pension liability), end of year (1,666) (1,800)  
Amount Recognized in Accumulated Other Comprehensive Loss, net of tax:      
Actuarial loss on plan assets (521) (558)  
Defined Benefit Plan Actuarial Gain Loss Benefit Obligation (331) (466)  
Actuarial gain recognized in current year 247 205  
Accumulated other comprehensive loss (605) (819)  
Accumulated benefit obligation at end of year (4,824) (4,410)  
Japan Plan [Member]
      
Change in Projected Benefit Obligation:      
Projected benefit obligation, beginning of period 1,188 1,108  
Service Cost 158 185 174
Interest cost 8 13 6
Benefits paid (123) (65)  
Actuarial (gain) loss on obligation 47 63  
Foreign exchange adjustment (229) (116)  
Projected benefit obligation, end of period 1,049 1,188 1,108
Change in Plan Assets:      
Plan assets at fair value, beginning of period 0 0  
Actual return on plan assets (including foreign currency impact) 0 0  
Employer contributions 0 0  
Benefits paid 0 0  
Distribution of plan assets 0 0  
Underfunded, end of year (1,049) (1,188)  
Foreign exchange adjustment 0 0  
Plan assets at fair value, end of period   0 0
Amount Recognized in Accumulated Other Comprehensive Loss, net of tax:      
Transition obligation 81 117  
Actuarial gain recognized in current year 191 353  
Prior service cost 17 28  
Net loss (184) (204)  
Accumulated other comprehensive loss 105 294  
Accumulated benefit obligation at end of year $ (857) $ (972)