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BENEFIT PLANS (Details Textual) | 12 Months Ended
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Jan. 31, 2015
Minimum [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 1.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 15.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent / us-gaap_RangeAxis = us-gaap_MaximumMember

X
- Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |