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Employee Benefit Plans (Details 2) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 30, 2016
Jan. 01, 2016
Jan. 02, 2015
Swiss Plan [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Current year actuarial gain (loss) on plan assets, net of tax $ (8) $ (61) $ (375)
Current year actuarial gain (loss) on benefit obligation, net of tax (275) (635) (846)
Actuarial income (loss) recorded in current year (98) 57 28
Effect of curtailments 0 0 782
Change in other comprehensive income (loss) (381) (517) (411)
Japan Plan [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Amortization of net transition obligation 8 7 12
Amortization of actuarial gain (loss) 25 (21) (9)
Actuarial income (loss) recorded in current year (40) (10) 13
Prior service cost 0 0 (2)
Change in other comprehensive income (loss) $ (7) $ (24) $ 14