Employee Benefit Plans (Details 1) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 29, 2017 |
Dec. 30, 2016 |
Jan. 01, 2016 |
|
Swiss Plan [Member] | |||
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
Service cost | $ 381 | $ 469 | $ 316 |
Interest cost | 53 | 65 | 74 |
Expected return on plan assets | (94) | (89) | (93) |
Actuarial loss recognized in current year | 72 | 111 | 64 |
Prior service credit | (7) | (7) | 0 |
Net periodic pension cost | 405 | 549 | 361 |
Japan Plan [Member] | |||
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
Service cost | 147 | 148 | 121 |
Interest cost | 4 | 6 | 6 |
Net amortization of transition obligation | 11 | 12 | 11 |
Actuarial loss recognized in current year | (1) | (13) | (15) |
Prior service credit | (3) | (1) | (2) |
Net periodic pension cost | $ 158 | $ 152 | $ 121 |