Represents the value of estimated net assets in defined benefit plan.

No definition available.

Name:	sprs_DefinedBenefitPlanEstimatedNetAssets
Namespace Prefix:	sprs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Deferral employee percentage of the employee's salary.

No definition available.

Name:	sprs_DefinedContributionPlanEmployeeDeferralPercent
Namespace Prefix:	sprs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Maximum percentage of employee gross pay, by the terms of the plan, that the employer may contribute to a defined contribution plan.

No definition available.

Name:	sprs_DefinedContributionPlanMaximumTotalContributionEmployeePercent
Namespace Prefix:	sprs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

No definition available.

Name:	sprs_RetirementPlanTextualAbstract
Namespace Prefix:	sprs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Description of defined contribution pension and other postretirement plans.

No definition available.

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

Amount of cost (reversal of cost) for pension benefits. Excludes other postretirement benefits.

No definition available.

Retirement Plan (Details) - USD ($)	1 Months Ended	3 Months Ended
Retirement Plan (Details) - USD ($)	Jun. 30, 1997	Feb. 29, 2020	Feb. 28, 2019	Nov. 30, 2019
Retirement Plan (Textual)
Description for retirement plan	Company adopted a qualified 401(k) retirement plan for all full-time employees who are twenty-one years of age and have completed twelve months of service.
Total employee contributions	15.00%
Employer matching contribution percentage	20.00%
Employee deferral percentage	5.00%
Net assets for plan				$ 1,486,000
Pension expense		$ 387	$ 1,100