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Employee Benefits - Schedule of Assumptions to Determine Projected Benefit Obligation (Details) | 12 Months Ended
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Dec. 30, 2017 | Dec. 31, 2016
Projected benefit obligation: |  |
Discount rate | 3.69% | 4.26%
Net periodic pension cost |  |
Discount rate | 4.26% | 4.52%
Expected long-term rate of return on plan assets | 8.10% | 7.82%
Minimum |  |
Projected benefit obligation: |  |
Average rate of increase in future compensation levels | 2.50% | 2.50%
Net periodic pension cost |  |
Average rate of increase in future compensation levels | 2.50% | 2.50%
Maximum |  |
Projected benefit obligation: |  |
Average rate of increase in future compensation levels | 5.50% | 5.50%
Net periodic pension cost |  |
Average rate of increase in future compensation levels | 5.50% | 5.50%

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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