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Note 14 - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2013
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
   

Years ended December 31,

 
   

2013

   

2012

   

2011

 

Current

                       

Federal

  $ -     $ -     $ -  

Foreign

    -       -       12  

State

    -       -       2  
      -       -       14  

Deferred

                       

Federal

    -       -       -  

Foreign

    -       -       (12 )

State

    -       -       -  
      -       -       (12 )

Benefit from income taxes

  $ -     $ -     $ 2  
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
   

December 31,

 
   

2013

   

2012

   

2011

 
                         

United States

  $ (6,774 )   $ (6,338 )   $ (5,668 )

Foreign subsidiaries

    (173 )     (238 )     (305 )

Loss before income taxes

  $ (6,947 )   $ (6,576 )   $ (5,973 )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   

Years ended December 31,

 
   

2013

   

2012

   

2011

 

United States statutory rate

    34.0%       34.0%       34.0%  

State taxes (net of federal tax benefit)

    1.3%       1.8%       2.7%  

Valuation allowance

    (19.6% )     (27.8% )     (34.4% )

Other

    (15.7% )     (8.0% )     (2.3% )
      0.0%       0.0%       0.0%  
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
   

December 31,

 
   

2013

   

2012

   

2011

 

Allowance for doubtful accounts

  $ 15     $ 53     $ 60  

Accrued expenses and other reserves

    2,048       2,197       2,264  

Tax credits, deferred R&D, and other

    748       907       656  

Net operating loss

    5,535       25,980       24,931  

Valuation allowance

    (8,344 )     (29,135 )     (27,909 )

Net total deferred taxes

  $ 2     $ 2     $ 2