XML 58 R48.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Share-Based Payments - Summary of Stock Warrant Activity (Detail) | 6 Months Ended
--- | ---
Jul. 16, 2022 shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock warrant, outstanding and nonvested | 3,914,833
Vested | (217,492)
Stock warrant, outstanding and nonvested | 3,697,341

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