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