Associate Retirement Plans	6 Months Ended
Jul. 14, 2018
Compensation And Retirement Disclosure [Abstract]
Associate Retirement Plans	Note 8 – Associate Retirement Plans During the 12 and 28-week periods ended July 14, 2018, the Company recognized net periodic pension income of $0.1 million and $0.2 million, respectively, related to the SpartanNash Company Pension Plan (“Pension Plan” or “Plan”) and net postretirement benefit costs of $0.1 million and $0.2 million, respectively, related to the SpartanNash Retiree Medical Plan. During the 12 and 28-week periods ended July 15, 2017, the Company recognized net periodic pension income of $0.2 million and $0.3 million, respectively, and net postretirement benefit costs of $0.1 million and $0.2 million, respectively for the aforementioned plans. Substantially all of these amounts are included in Other, net in the Condensed Consolidated Statements of Earnings. On February 28, 2018, the Company’s Board of Directors granted approval to proceed with terminating the frozen Pension Plan. The Plan has been terminated as of July 31, 2018. The Company will offer participants the option to receive an annuity or lump sum distribution which may be rolled over into another qualified plan. The distribution of assets to plan participants is expected to take between 9 and 21 months. The Company will incur a one-time, pre-tax settlement charge of approximately $22 million to recognize the deferred losses in AOCI upon distribution of the Plan assets and related recognition of the settlement. The Company expects to reduce administrative fees and premium funding costs as a result of the Plan termination. The Company did not make any contributions to the SpartanNash Company Pension Plan during the 28 weeks ended July 14, 2018. Although no contributions are required, the Company expects to contribute approximately $2.0 to $3.0 million to the Pension Plan in 2018 to fund the plan termination liability. The Company expects to make contributions of $0.4 million in 2018 to the Retiree Medical Plan. The Company’s retirement programs also include defined contribution plans providing contributory benefits, as well as executive compensation plans for a select group of management personnel and/or highly compensated associates. Multi-Employer Plans In addition to the plans listed above, the Company participates in the Central States Southeast and Southwest Pension Fund, the Michigan Conference of Teamsters and Ohio Conference of Teamsters Health and Welfare plans (collectively referred to as “multi-employer plans”), and other company-sponsored defined contribution plans for most associates covered by collective bargaining agreements. With respect to the Company’s participation in the Central States Plan, expense is recognized as contributions are funded. The Company’s contributions during the 12 weeks ended July 14, 2018 and July 15, 2017 were $3.4 million. The Company’s contributions for the 28 weeks ended July 14, 2018 and July 15, 2017 were $7.9 million and $7.8 million, respectively. See Note 7 for further information regarding the Company’s participation in the Central States Plan.

Note 8 – Associate Retirement Plans

During the 12 and 28-week periods ended July 14, 2018, the Company recognized net periodic pension income of $0.1 million and $0.2 million, respectively, related to the SpartanNash Company Pension Plan (“Pension Plan” or “Plan”) and net postretirement benefit costs of $0.1 million and $0.2 million, respectively, related to the SpartanNash Retiree Medical Plan. During the 12 and 28-week periods ended July 15, 2017, the Company recognized net periodic pension income of $0.2 million and $0.3 million, respectively, and net postretirement benefit costs of $0.1 million and $0.2 million, respectively for the aforementioned plans. Substantially all of these amounts are included in Other, net in the Condensed Consolidated Statements of Earnings.

On February 28, 2018, the Company’s Board of Directors granted approval to proceed with terminating the frozen Pension Plan. The Plan has been terminated as of July 31, 2018. The Company will offer participants the option to receive an annuity or lump sum distribution which may be rolled over into another qualified plan. The distribution of assets to plan participants is expected to take between 9 and 21 months. The Company will incur a one-time, pre-tax settlement charge of approximately $22 million to recognize the deferred losses in AOCI upon distribution of the Plan assets and related recognition of the settlement. The Company expects to reduce administrative fees and premium funding costs as a result of the Plan termination.

The Company did not make any contributions to the SpartanNash Company Pension Plan during the 28 weeks ended July 14, 2018. Although no contributions are required, the Company expects to contribute approximately $2.0 to $3.0 million to the Pension Plan in 2018 to fund the plan termination liability. The Company expects to make contributions of $0.4 million in 2018 to the Retiree Medical Plan.

The Company’s retirement programs also include defined contribution plans providing contributory benefits, as well as executive compensation plans for a select group of management personnel and/or highly compensated associates.

Multi-Employer Plans

In addition to the plans listed above, the Company participates in the Central States Southeast and Southwest Pension Fund, the Michigan Conference of Teamsters and Ohio Conference of Teamsters Health and Welfare plans (collectively referred to as “multi-employer plans”), and other company-sponsored defined contribution plans for most associates covered by collective bargaining agreements.

With respect to the Company’s participation in the Central States Plan, expense is recognized as contributions are funded. The Company’s contributions during the 12 weeks ended July 14, 2018 and July 15, 2017 were $3.4 million. The Company’s contributions for the 28 weeks ended July 14, 2018 and July 15, 2017 were $7.9 million and $7.8 million, respectively. See Note 7 for further information regarding the Company’s participation in the Central States Plan.