INCOME TAXES INCOME TAXES, (Unrecognized Tax Benefit) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 31, 2015 States
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits	$ 623us-gaap_UnrecognizedTaxBenefits
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance, beginning of period	531us-gaap_UnrecognizedTaxBenefits
Additions based on tax positions related to 2014	79
Additions for tax positions for prior years	13
Balance, end of period	623us-gaap_UnrecognizedTaxBenefits
Unresolved tax adjustment	$ 2,300ssi_UnresolvedTaxAdjustment
Number of State Taxing Authorities	38ssi_NumberofStateTaxingAuthorities

Number of State Taxing Authorities

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- Definition

Proposed IRS adjustment to income before taxes in connection

+ References

No definition available.

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- Details

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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