v2.4.0.8

Note 9 - Income Taxes (Tables) | 12 Months Ended
--- | ---
Jan. 31, 2014
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | Years Ended January 31, |
|  | 2014 |  |  | 2013 |
Federal: |  |  |  |  |  |  |  |
Current |  | $ | — |  |  | $ | — |
Deferred |  |  | — |  |  |  | — |
State: |  |  |  |  |  |  |  |
Current |  |  | 2 |  |  |  | 2 |
Deferred |  |  | — |  |  |  | — |
Foreign: |  |  |  |  |  |  |  |
Current |  |  | — |  |  |  | — |
|  | $ | 2 |  |  | $ | 2 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | Years Ended January 31, |
|  | 2014 |  |  | 2013 |
|  | Amount |  |  | Percent Pretax Income |  |  | Amount |  |  | Percent Pretax Income |
Loss from continuing operations before income taxes and discontinued operations |  | $ | (2,056 | ) |  |  | 100 | % |  | $ | (5,590 | ) |  |  | 100 | %
Computed “expected” income tax benefit on loss from continuing operations before income taxes |  | $ | (699 | ) |  |  | (34 | )% |  | $ | (1,901 | ) |  |  | (34 | )%
State tax, net of federal benefit |  |  | 2 |  |  |  | 0 | % |  |  | (301 | ) |  |  | (5 | )%
Tax credits |  |  | — |  |  |  | 0 | % |  |  | (80 | ) |  |  | (2 | )%
Change in valuation allowance |  |  | (1,074 | ) |  |  | (52 | )% |  |  | 619 |  |  |  | 11 | %
Permanent differences |  |  | (93 | ) |  |  | (5 | )% |  |  | 969 |  |  |  | 17 | %
Return to provision adjustments |  |  | — |  |  |  | 0 | % |  |  | 681 |  |  |  | 12 | %
Change in state tax rate |  |  | 1,866 |  |  |  | 91 | % |  |  |  |  |  |  |  |
Other, net |  |  | — |  |  |  | 0 | % |  |  | 15 |  |  |  | — |
Income tax expense |  | $ | 2 |  |  |  | — |  |  | $ | 2 |  |  |  | — |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | January 31, |
|  | 2014 |  |  | 2013 |
Deferred tax assets: |  |  |  |  |  |  |  |
Inventory |  |  | — |  |  |  | 277 |
Property and equipment, principally due to differing depreciation methods |  |  | 134 |  |  |  | 206 |
Accruals and reserves |  |  | 124 |  |  |  | 184 |
Net research and manufacturer investment credit carryforwards |  |  | 2,308 |  |  |  | 2,563 |
Net operating losses |  |  | 13,904 |  |  |  | 14,322 |
AMT credit carryforwards |  |  | 110 |  |  |  | 126 |
Stock based compensation |  |  | 93 |  |  |  | 69 |
Other |  |  | 2 |  |  |  | 2 |
Total gross deferred tax assets |  |  | 16,675 |  |  |  | 17,749 |
Less: valuation allowance |  |  | (16,675 | ) |  |  | (17,749 | )
Net deferred tax assets |  | $ | — |  |  | $ | — |
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
|  | Unrecognized Tax Benefits |
Balance at February 1, 2013 |  | $ | 777 |
Additions based on tax positions related to the current year |  |  | — |
Reductions due to lapses of statute of limitations |  |  | — |
Reductions for tax positions of prior years |  |  | — |
Balance at January 31, 2014 |  | $ | 777 |

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

X
- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
Name: | us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
Name: | us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
Name: | us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the change in unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=32707879&loc=d3e36027-109320 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
Name: | us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration