XML 112 R97.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Share-Based Payments - Summary of Stock Warrant Activity (Detail) - shares | 12 Months Ended
--- | ---
Dec. 30, 2023 | Dec. 31, 2022 | Jan. 01, 2022
Share-Based Payment Arrangement [Abstract] |  |  |
Stock warrant, outstanding and nonvested | 3,479,849 | 3,914,833 | 4,349,817
Vested | (217,492) | (434,984) | (434,984)
Stock warrant, outstanding and nonvested | 3,262,357 | 3,479,849 | 3,914,833

X
- Definition Class of warrants or rights number of securities vested. + References No definition available. + Details
Name: | sptn_ClassOfWarrantsOrRightsNumberOfSecuritiesVested
Namespace Prefix: | sptn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration