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Share-Based Payments - Summary of Stock-Based Payment Expense Recognized Included as a Reduction of Net Sales in Consolidated Statements of Operations (Detail) $ in Thousands | 12 Months Ended
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Jan. 02, 2021 USD ($)
Employee Service Share Based Compensation Aggregate Disclosures [Abstract] |
Warrants expense | $ 6,549
Tax benefits | (2,051)
Stock-based compensation expense, net of tax | $ 4,498

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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