No definition available.

Name:	ssi_SARsWeightedAverageExercisePriceAbstract
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- Definition

The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices pertaining to options and SARs exercised under the plan as of the balance sheet date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

The weighted average price at which grantees could have acquired the underlying shares with respect to SARs that were terminated during the reporting period due to noncompliance with plan terms during the reporting period.

+ References

No definition available.

+ Details

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- Definition

As of the balance sheet date, the total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of fully vested and expected to vest SARs that are exercisable.

+ References

No definition available.

+ Details

Name:	ssi_ShareBasedCompensationArrangementByShareBasedPaymentAwardSARsOutstandingAggregateIntrinsicValue
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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of SARs outstanding and currently exercisable under the stock option plan.

+ References

No definition available.

+ Details

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- Definition

The weighted average period between the balance sheet date and expiration for all vested portions of SARs outstanding and currently exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years.

+ References

No definition available.

+ Details

Name:	ssi_ShareBasedCompensationArrangementBySharebasedPaymentAwardSARsOutstandingWeightedAverageRemainingContractualTerm
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- References

No definition available.

+ Details

Name:	ssi_StockOptionsAndSarsAggregateIntrinsicValueAbstract
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- References

No definition available.

+ Details

Name:	ssi_StockOptionsAndSarsWeightedAverageRemainingContractualTermYearsAbstract
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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
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- Definition

Number of shares under non-option equity instrument agreements that were either cancelled or expired.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Data Type:	xbrli:sharesItemType
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

+ Details

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- Details

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- Details

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STOCK-BASED COMPENSATION, (Stock Options and SARs) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Stock Options and SARs
Aggregate intrinsic value
Aggregate intrinsic value, exercised Options and SARs		$ 900	$ 3,700
Award vesting period	4 years
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period if not exercised or forfeited	7 years
Number of shares
Outstanding, vesting and exercisable at January 30, 2016	224,400
Number of shares, forfeited and expired
Forfeited	(46,500)
Outstanding, vested and exercisable at January 28, 2017	177,900	224,400
Weighted average exercise price (in dollars per share)
Outstanding at January 30, 2016	$ 17.16
Forfeited	15.14
Outstanding, vested and exercisable at January 28, 2017	$ 17.69	$ 17.16
Weighted average remaining contractual term
Outstanding, vested and exercisable at January 28, 2017	9 months
Aggregate intrinsic value
Aggregate intrinsic value, vested and exercisable	$ 0