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Note C - Factoring (Tables)
 12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
   
December 31,
  
   
201
9
    
201
8
  
                 
Accounts receivable - current
   $
139,785
     $
1,587,817
  
Accounts receivable - non current    
1,720,000
      
1,720,000
  
     
1,859,785
      
3,307,817
  
                 
Allowance for doubtful accounts - current
    
(13,785
)
    
(13,785
)
Allowance for doubtful accounts - non current    
(1,720,000
 )    
(1,720,000
 )
     
(1,733,785
 )    
(1,733,785
 )
                 
Accounts receivable, net of allowances for doubtful accounts
   $
126,000
     $
1,574,032
  
Factoring Fees [Table Text Block]
   
Years Ended December 31,
  
   
201
9
    
201
8
  
                 
Factoring fees
   $
203,950
     $
186,845
  
Factored Accounts Receivable [Member]  
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
   
Original Invoice
Value
    
Factored
Amount
    
Factored
Balance due
  
Year Ended December 31, 201
9
  
 
 
 
  
 
 
 
  
 
 
 
Factored accounts receivable
   $
233,005
     $
122,064
     $
110,941
  
Year Ended December 31, 2018
  
 
 
 
  
 
 
 
  
 
 
 
Factored accounts receivable
   $
221,120
     $
164,438
     $
56,682