Income Taxes (Details Textual) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 106	$ 271	$ 406
Unrecognized tax benefits that would favorably impact effective tax rate	70
Liability for interest and penalties related to unrecognized tax benefits	36	217
Valuation allowance	24,601	22,859
Federal net operating loss carryforward	23,563
State net operating loss carryforward	$ 49,635

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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- Definition

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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