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Note O - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2013
Income Tax Disclosure [Abstract]  
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
   

2013

   

2012

 
                 

Current asset:

               

Accrued compensation

  $ 49,000     $ 128,000  

Accounts receivable allowance

    8,000       8,000  

Non-current asset (liability):

               

Stock-based compensation

    205,000       336,000  

Basis differences in fixed assets

    (19,000

)

    (10,000

)

Basis differences in intangible assets

    (69,000     (77,000

)

Net operating loss and credit carryforwards

    17,217,000       16,143,000  

Valuation allowances

    (17,391,000

)

    (16,528,000

)

                 
    $     $  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   

2013

   

2012

 
                 

US Federal statutory income tax rate

    34

%

    34

%

Permanent differences

    (3

)

    831  

Effect of net operating loss

    (31

)

    (865

)

                 

Effective tax rate

   

%

   

%