Share-Based Payments - Summary of Share-based Payment Expense Recognized as a Reduction of Net Sales in Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	4 Months Ended
Apr. 23, 2022	Apr. 24, 2021
Employee Service Share Based Compensation Aggregate Disclosures [Abstract]
Warrant expense	$ 673	$ 645
Income tax benefit	(50)	(57)
Warrant expense, net of tax	$ 623	$ 588

Class of warrant or right stock based compensation expense net of tax.

No definition available.

Name:	sptn_ClassOfWarrantOrRightStockBasedCompensationExpenseNetOfTax
Namespace Prefix:	sptn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration