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Associate Retirement Plans - Additional Information (Detail) | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 28, 2013 USD ($) | Dec. 31, 2016 USD ($) | Jan. 02, 2016 USD ($) Trust | Jan. 03, 2015 USD ($) | Dec. 31, 2014 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined contribution plans expense | $ 4,800,000 |  | $ 21,100,000 | $ 13,600,000 |
Number of Trusts | Trust |  |  | 2 |  |
Percentage of trust funded with pre-merger liability to plan participants |  |  | 125.00% |  |
Proceeds from company owned life insurance |  |  | $ 5,004,000 |  |
Cash surrender value of plan assets included in other long term assets |  |  | 135,261,000 | 124,453,000 |
Aggregate amount of life insurance coverage |  |  | $ 15,000,000 |  |
Defined contribution plans maximum requisite service period |  |  | 30 years |  |
Defined contribution plan employees minimum period of service |  |  | 10 years |  |
Defined contribution plan employees age to eligible under the plan |  |  | 55 years |  |
Maximum age of major medical insurance with deductible and coinsurance provisions |  |  | 65 years |  |
Multiplier effect of Monthly postretirement health care benefits to covered employees |  |  | $ 5 |  |
Accumulated benefit obligation |  |  | $ 83,400,000 | 93,000,000 |
Actuarial gains and losses are amortized when accumulation of such gains and losses exceeds |  |  | 10.00% |  |
Percentage point increase or decrease in assumed health care cost trend rate |  |  | 1.00% |  |
Red zone fund status |  |  | Less than 65 percent |  |
Maximum [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
1% increase or decrease in assumed health care cost trend rate in accumulated postretirement benefit obligation |  |  | $ 100,000 |  |
Status or red zone plans |  |  | 65.00% |  |
Cash Balance Pension Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Distribution charges |  |  |  | 10,600,000 |
Settlement accounting charge |  |  |  | 1,600,000 |
Accumulated benefit obligation |  |  |  |  | $ 52,400,000
Average long-term expected return on pension plan assets |  |  | 5.05% |  |
Cash Balance Pension Plan [Member] | Forecast [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Standard pension funding carryover |  | $ 0 |  |  |
Super Foods Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Distribution charges |  |  |  | 10,600,000 |
Settlement accounting charge |  |  |  | 1,600,000 |
Accumulated benefit obligation |  |  |  |  | $ 40,600,000
Central States, Southeast and Southwest Areas Pension Fund [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Pension contributions during last plan year | $ 6,800,000 |  | $ 12,900,000 | 12,900,000 |
Cash Surrender Value [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Cash surrender value of plan assets included in other long term assets |  |  | $ 4,200,000 | $ 4,200,000 |

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- Definition Defined benefit plan assumptions used calculating benefit obligation expected long term return on plan assets. + References No definition available. + Details
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- Definition Defined benefit plan distributions charge. + References No definition available. + Details
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- Definition Defined contribution plan employees age to eligible under plan. + References No definition available. + Details
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- Definition Defined contribution plan employees maximum requisite service period. + References No definition available. + Details
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- Definition For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503844 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition The increase in the fair value of plan assets from contributions made by the employer. + 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 (b)(3) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition The amount of decrease that relates to an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 15 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Indicate whether the multiemployer plan is less than 65 percent funded, between 65 and less than 80 percent funded, or at least 80 percent funded. The acceptable values are: (1) "less than 65 percent", (2) "between 65 and less than 80 percent", (3) "at least 80 percent", and (4) "NA". A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=49170332&loc=SL14450657-114947 + Details
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