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Employee Benefit Plans - Schedule of Defined Benefit Plans Disclosures (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 28, 2018 | Dec. 29, 2017 | Dec. 30, 2016
Swiss Plan |  |  |  |
Change in Projected Benefit Obligation: |  |  |  |
Projected benefit obligation, beginning of period |  | $ 7,445 | $ 6,363 |
Service cost | [1] | 474 | 381 | $ 469
Interest cost | [2] | 56 | 53 | 65
Participant contributions |  | 361 | 260 |
Benefits deposited (paid) |  | 189 | (185) |
Actuarial loss (gain) |  | 269 | 721 |
Prior service credit |  | 0 | (148) |
Projected benefit obligation, end of period |  | 8,794 | 7,445 | 6,363
Change in Plan Assets: |  |  |  |
Plan assets at fair value, beginning of period |  | 4,144 | 3,606 |
Actual return on plan assets |  | 3 | 203 |
Employer contributions |  | 433 | 260 |
Participant contributions |  | 361 | 260 |
Benefits deposited (paid) |  | 189 | (185) |
Plan assets at fair value, end of period |  | 5,130 | 4,144 | 3,606
Funded status (pension liability), end of year | [3] | (3,664) | (3,301) |
Amount Recognized in Accumulated Other Comprehensive Income (Loss), net of tax: |  |  |  |
Actuarial loss on plan assets |  | (1,035) | (934) |
Actuarial loss on benefit obligation |  | (2,145) | (1,902) |
Actuarial gain (loss) recognized in current year |  | 630 | 527 |
Prior service credit |  | 165 | 184 |
Effect of curtailments |  | 609 | 609 |
Accumulated other comprehensive income (loss) |  | (1,776) | (1,516) |
Accumulated benefit obligation at year end |  | (8,230) | (6,932) |
Japan Plan |  |  |  |
Change in Projected Benefit Obligation: |  |  |  |
Projected benefit obligation, beginning of period |  | 1,352 | 1,240 |
Service cost | [1] | 153 | 147 | 148
Interest cost | [4] | 4 | 4 | 6
Benefits deposited (paid) |  | (9) | (116) |
Actuarial loss (gain) |  | 119 | 32 |
Foreign exchange adjustment |  | 27 | 45 |
Projected benefit obligation, end of period |  | 1,646 | 1,352 | 1,240
Change in Plan Assets: |  |  |  |
Plan assets at fair value, beginning of period |  | 0 | 0 |
Actual return on plan assets |  | 0 | 0 |
Employer contributions |  | 0 | 0 |
Plan assets at fair value, end of period |  | 0 | 0 | $ 0
Benefits paid |  | 0 | 0 |
Distribution of plan assets |  | 0 | 0 |
Foreign exchange adjustment |  | 0 | 0 |
Funded status (pension liability), end of year |  | (1,646) | (1,352) |
Amount Recognized in Accumulated Other Comprehensive Income (Loss), net of tax: |  |  |  |
Transition obligation |  | 0 | (7) |
Actuarial gain (loss) recognized in current year |  | (36) | (35) |
Prior service credit |  | 8 | 8 |
Net gain (loss) |  | 38 | 122 |
Accumulated other comprehensive income (loss) |  | 10 | 88 |
Accumulated benefit obligation at year end |  | $ (1,416) | $ (1,158) |
[1] | Recognized in selling general and administrative expenses on the Consolidated Statements of Operations.
[2] | For year ended 2018, recognized in other income (expense), net, and for years ended 2017 and 2016, recognized in selling, general and administrative expenses on the Consolidated Statements of Operations.
[3] | The underfunded balance was included in pension liability on the Consolidated Balance Sheets.
[4] | For the year ended 2018, recognized in other income (expense), net, and for the years ended 2017 and 2016, recognized in selling, general and administrative expenses on the Consolidated Statements of Operations.

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- Definition Defined benefit plan accumulated other comprehensive income net actuarial gains (losses) after tax. + References No definition available. + Details
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- Definition Amount of gain (loss) from a decision to temporarily deviate from the substantive plan, or from a change in benefit obligation from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover or salary scale. + References No definition available. + Details
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- Definition Amount of gain (loss) from a decision to temporarily deviate from the substantive plan, or from a change plan asset value from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover or salary scale. + References No definition available. + Details
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- Definition The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents decrease to plan assets. + References No definition available. + Details
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- Definition The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents decrease to plan assets. + References No definition available. + Details
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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Amount of (increase) decrease in accumulated benefit obligation of defined benefit plan from effects of settlement and curtailment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (r) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Amount, after tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 + Details
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