XML 110 R94.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Share-Based Payments - Summary of Stock-Based Payment Expense Recognized Included as a Reduction of Net Sales in Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 01, 2022 | Jan. 02, 2021
Employee Service Share Based Compensation Aggregate Disclosures [Abstract] |  |
Warrant expense | $ 1,958 | $ 6,549
Tax benefits | (152) | (2,051)
Warrant expense, net of tax | $ 1,806 | $ 4,498

X
- Definition Class of warrant or right income tax expense (benefit). + References No definition available. + Details
Name: | sptn_ClassOfWarrantOrRightIncomeTaxExpenseBenefit
Namespace Prefix: | sptn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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

X
- References No definition available. + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration