XML 114 R101.htm IDEA: XBRL DOCUMENT v3.25.0.1

Share-Based Payments - Summary of Stock Warrant Activity (Detail) - shares	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Stock warrant, outstanding and nonvested	3,262,357	3,479,849	3,914,833
Vested	(217,492)	(217,492)	(434,984)
Stock warrant, outstanding and nonvested	3,044,865	3,262,357	3,479,849

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