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v3.23.1

Stock-Based Compensation - 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
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Apr. 22, 2023 | Apr. 23, 2022
Employee Service Share Based Compensation Aggregate Disclosures [Abstract] |  |
Warrant expense | $ 607 | $ 673
Income tax benefit | (65) | (50)
Warrant expense, net of tax | $ 542 | $ 623

X
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- Definition Class of warrant or right stock based compensation expense net of tax. + References No definition available. + Details
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Namespace Prefix: | sptn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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