XML 58 R46.htm IDEA: XBRL DOCUMENT v3.21.2

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	3 Months Ended	9 Months Ended
	Oct. 09, 2021	Oct. 09, 2021
Employee Service Share Based Compensation Aggregate Disclosures [Abstract]
Warrant expense	$ 403	$ 1,478
Income tax benefit	(28)	(121)
Warrant expense, net of tax	$ 375	$ 1,357

X

- Definition

Class of warrant or right expense before tax.

+ References

No definition available.

+ Details

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

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

- References

No definition available.

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration