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Associate Retirement Plans - Additional Information (Detail) - USD ($) |  | 12 Months Ended
--- | --- | ---
Jul. 01, 2022 | Dec. 31, 2022 | Jan. 01, 2022 | Jan. 02, 2021
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined contribution plans expense |  | $ 12,000,000.0 | $ 11,800,000 | $ 12,200,000
Cash surrender value of plan assets included in other long term assets |  | 84,382,000 | 97,195,000 |
Aggregate amount of life insurance coverage |  | $ 15,000,000.0 | 15,000,000.0 |
Defined contribution plan employees minimum period of service |  | 10 years |  |
Multiplier effect of Monthly postretirement health care benefits to covered employees |  | $ 5 |  |
Michigan Conference of Teamsters and Ohio Conference of Teamsters Health and Welfare Plans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Pension contributions during last plan year |  | 13,400,000 | 13,200,000 | 13,700,000
Central States, Southeast and Southwest Areas Pension Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Pension contributions during last plan year |  | $ 12,300,000 | 13,500,000 | 14,100,000
Collective bargaining arrangement description |  | The Company is party to four CBAs that require contributions to the Central States Plan with expiration dates ranging from February 2024 to April 2026. These CBAs cover warehouse personnel and drivers in Grand Rapids, Michigan and Bellefontaine and Lima, Ohio. |  |
Central States, Southeast and Southwest Areas Pension Plan [Member] | Maximum [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Percentage representing contribution funded to plan total contribution |  | 5.00% |  |
Pension Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Frozen pension plan, termination date |  | Jul. 31, 2018 |  |
Realized gains related to refunds from annuity provider |  |  |  | 1,193,000
Defined benefit plan remaining plan assets balance employer fund liabilities |  |  | 2,700,000 |
Net periodic benefit (income) expense |  |  |  | (1,193,000)
Fair value of plan assets |  |  | 2,689,000 |
Retiree Medical Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Increase (Decrease) in obligations |  | $ 6,600,000 |  |
Net periodic benefit (income) expense |  | (452,000) | 643,000 | $ 589,000
Spartan Nash Medical Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Payment to retired participants | $ 2,000,000.0 |  |  |
Net periodic benefit (income) expense | $ 700,000 |  |  |
Cash Surrender Value [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Cash surrender value of plan assets included in other long term assets |  | $ 4,400,000 | $ 4,300,000 |

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