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Note M - Accrued Liabilities (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Accrued Liabilities [Table Text Block]
   
2020
   
2019
 
                 
Compensation
  $
87,015
    $
193,823
 
Compensated absences
   
227,147
     
155,962
 
Accrued legal and accounting fees
   
83,738
     
105,933
 
Sales tax payable
   
17,544
     
17,248
 
Factoring fees
   
5,495
     
31,458
 
Other
   
87,548
     
68,461
 
                 
Total
  $
508,487
    $
572,885