XML 54 R39.htm IDEA: XBRL DOCUMENT v3.19.1
Note P - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
   
201
8
   
201
7
 
                 
Accrued compensation
  $
91,000
    $
118,000
 
Accounts receivable allowance
   
474,000
     
277,000
 
Stock-based compensation
   
644,000
     
387,000
 
Basis differences in fixed assets
   
(13,000
)
   
(18,000
)
Basis differences in intangible assets
   
50,000
     
46,000
 
Net operating loss and credit carryforwards
   
12,735,000
     
12,052,000
 
Valuation allowances
   
(13,981,000
)
   
(12,862,000
)
                 
    $     $  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   
201
8
   
201
7
 
                 
Federal statutory income tax rate
   
21
%
   
34
%
Permanent differences
   
     
 
Change in tax laws/tax rate
   
     
(13
)
Effect of net operating loss
   
(21
)
   
(21
)
                 
Effective tax rate
   
%
   
%