v2.4.0.6
Note 9 - Income Taxes (Tables)
 12 Months Ended
Jan. 31, 2013
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
   
Years Ended January 31,
 
   
2013
   
2012
 
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,
 
   
2013
   
2012
 
   
Amount
   
Percent Pretax Income
   
Amount
   
Percent Pretax Income
 
Loss from continuing operations before income taxes and discontinued operations
  $ (5,590 )     100 %   $ (5,287 )     100 %
                                 
Computed “expected” income tax benefit on loss from continuing operations before income taxes
  $ (1,901 )     (34 %)   $ (1,798 )     (34 %)
State tax, net of federal benefit
    (301 )     (5 %)     (192 )     (4 %)
Tax credits
    (80 )     (2 %)     (157 )     (3 %)
Change in valuation allowance
    619       11 %     2,009       38 %
Permanent differences
    969       17 %     3       —  
Return to provision adjustments
    681       12 %     116       2 %
Other, net
    15       —       21       —  
Income tax benefit
  $ 2       —     $ 2       —  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
January 31,
 
   
2013
   
2012
 
Tax expense from continuing operations
  $ 2     $ 2  
Tax expense from discontinued operations
    —       —  
    $ 2     $ 2  
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
   
January 31,
 
   
2013
   
2012
 
Deferred tax assets:
           
Inventory
    277       748  
Property and equipment, principally due to differing depreciation methods
    206       671  
Accruals and reserves
    184       300  
Net research and manufacturer investment credit carryforwards
    2,563       2,576  
Net operating losses
    14,322       11,894  
AMT credit carryforwards
    126       126  
Stock based compensation
    69       796  
Other
    2       19  
Total gross deferred tax assets
    17,749       17,130  
Less: valuation allowance
    (17,749 )     (17,130 )
Net deferred tax assets
  $ —     $ —  
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
   
Unrecognized Tax Benefits
 
Balance at February 1, 2012
  $ 760  
Additions based on tax positions related to the current year
    17  
Reductions due to lapses of statute of limitations
    —  
Reductions for tax positions of prior years
    —  
Balance at January 31, 2013
  $ 777