Concentration of Credit Risk	12 Months Ended
Dec. 29, 2018
Risks And Uncertainties [Abstract]
Concentration of Credit Risk	Note 15 – Concentration of Credit Risk The Company may provide financial assistance in the form of loans to certain independent retailers for inventories, store fixtures and equipment and store improvements. Loans are generally secured by liens on real estate, inventory and/or equipment, personal guarantees and other types of collateral, and are generally repayable over a period of five to ten years. The Company establishes allowances for doubtful accounts based upon periodic assessments of the credit risk of specific customers, collateral value, historical trends and other information. The Company believes that adequate provisions have been recorded for any doubtful accounts. In addition, the Company may guarantee debt and lease obligations of independent retailers. In the event these retailers are unable to meet their debt service payments or otherwise experience an event of default, the Company would be unconditionally liable for the outstanding balance of their debt and lease obligations, which would be due in accordance with the underlying agreements. In the ordinary course of business, the Company may advance funds to certain independent retailers which are earned by the retailers primarily through achieving specified purchase volume requirements, as outlined in their supply agreements with the Company, or in limited instances, for remaining a SpartanNash customer for a specified time period. These advances must be repaid if the purchase volume requirements are not met or if the retailer no longer remains a customer for the specified time period. As of December 29, 2018, the Company has an unearned advanced amount to one independent retailer for an amount representing approximately two percent of the Company’s total assets. The Company’s collateral related to the advanced funds is a security interest in select business assets of the independent retailer’s stores including select real property assets, and other collateral, including a personal guarantee, from the shareholder. Despite the collateral, the Company may be unable to realize the entire unearned portion of the funds advanced to this independent retailer, and accordingly, has evaluated the net estimated realizability of the advance. During the fourth quarter of 2017, and in the context of a state law receivership proceeding, the customer rationalized its retail store base and entered into a new supply agreement with the Company and assumed the obligation of the original agreement. In the fourth quarter of 2018, the customer defaulted on the terms of the supply agreement. As a result, the Company exercised its rights and filed a petition to place the customer in receivership. The Company performed an analysis of the net realizability of the underlying collateral which resulted in a $32.0 million charge in 2018. In the ordinary course of business, the Company also subleases and assigns various leases to third parties. As of December 29, 2018, the Company estimates the present value of its maximum potential obligations for subleases and assigned leases to be approximately $5.9 million and $14.1 million, respectively.

Concentration of Credit Risk

12 Months Ended

Dec. 29, 2018

Note 15 – Concentration of Credit Risk

The Company may provide financial assistance in the form of loans to certain independent retailers for inventories, store fixtures and equipment and store improvements. Loans are generally secured by liens on real estate, inventory and/or equipment, personal guarantees and other types of collateral, and are generally repayable over a period of five to ten years. The Company establishes allowances for doubtful accounts based upon periodic assessments of the credit risk of specific customers, collateral value, historical trends and other information. The Company believes that adequate provisions have been recorded for any doubtful accounts. In addition, the Company may guarantee debt and lease obligations of independent retailers. In the event these retailers are unable to meet their debt service payments or otherwise experience an event of default, the Company would be unconditionally liable for the outstanding balance of their debt and lease obligations, which would be due in accordance with the underlying agreements.

In the ordinary course of business, the Company may advance funds to certain independent retailers which are earned by the retailers primarily through achieving specified purchase volume requirements, as outlined in their supply agreements with the Company, or in limited instances, for remaining a SpartanNash customer for a specified time period. These advances must be repaid if the purchase volume requirements are not met or if the retailer no longer remains a customer for the specified time period. As of December 29, 2018, the Company has an unearned advanced amount to one independent retailer for an amount representing approximately two percent of the Company’s total assets. The Company’s collateral related to the advanced funds is a security interest in select business assets of the independent retailer’s stores including select real property assets, and other collateral, including a personal guarantee, from the shareholder. Despite the collateral, the Company may be unable to realize the entire unearned portion of the funds advanced to this independent retailer, and accordingly, has evaluated the net estimated realizability of the advance. During the fourth quarter of 2017, and in the context of a state law receivership proceeding, the customer rationalized its retail store base and entered into a new supply agreement with the Company and assumed the obligation of the original agreement. In the fourth quarter of 2018, the customer defaulted on the terms of the supply agreement. As a result, the Company exercised its rights and filed a petition to place the customer in receivership. The Company performed an analysis of the net realizability of the underlying collateral which resulted in a $32.0 million charge in 2018.

In the ordinary course of business, the Company also subleases and assigns various leases to third parties. As of December 29, 2018, the Company estimates the present value of its maximum potential obligations for subleases and assigned leases to be approximately $5.9 million and $14.1 million, respectively.