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Associate Retirement Plans - Summary of Fair Value Pension Plan Asset (Detail) - USD ($) $ in Thousands | Jan. 02, 2016 | Jan. 03, 2015 | Dec. 28, 2013
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value | $ 84,753 | $ 93,718 |
Level 1 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value |  | 29,851 |
Level 2 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value | 68,555 | 46,118 |
Significant unobservable inputs (Level 3) [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value | 16,198 | 17,749 |
Mutual funds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value | 9,401 | 29,851 |
Mutual funds [Member] | Level 1 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value |  | 29,851 |
Mutual funds [Member] | Level 2 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value | 9,401 |  |
Pooled funds [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value | 58,355 | 45,737 |
Pooled funds [Member] | Level 2 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value | 58,355 | 45,737 |
Money market fund [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value | 799 | 381 |
Money market fund [Member] | Level 2 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value | 799 | 381 |
Guaranteed annuity contract [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value | 16,198 | 17,749 |
Guaranteed annuity contract [Member] | Significant unobservable inputs (Level 3) [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value | $ 16,198 | $ 17,749 | $ 18,071

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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