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Employee Benefit Plans (Details 1) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Jan. 03, 2014
Dec. 28, 2012
Dec. 30, 2011
Swiss Plan [Member]
      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost $ 320 $ 301 $ 414
Interest cost 101 116 127
Expected return on plan assets (96) (100) (101)
Actuarial loss recognized in current year 55 54 97
Prior service loss recognized in current year 0 0 0
Transition obligation recognized in current year 0 0 0
Amendments 0 0 0
Net periodic pension cost 380 371 537
Japan Plan [Member]
      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 158 185 174
Interest cost 8 13 6
Net amortization of transition obligation 12 16 16
Actuarial loss recognized in current year (31) (58) (117)
Defined Benefit Plan Prior Service Cost (1) (1) (1)
Net periodic pension cost $ 146 $ 155 $ 78