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Note F - Geographic and Other Information (Tables)
 12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
    Years ended December 31,
    2019   2018
Cosmetic Ingredients   $
6,383,224
     $
7,529,487
  
Pharmaceuticals    
5,238,226
      
4,516,537
  
Medical Products    
2,971,243
      
2,238,813
  
Industrial and other    
161,138
      
173,218
  
Gross Sales    
14,753,831
      
14,458,055
  
Less: Discounts and allowances    
(1,154,747
 )    
(1,012,490
 )
Net Sales
   $
13,599,084
     $
13,445,565
  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
    Years ended December 31,
.
    2019   2018
United States   $
11,118,629
     $
10,931,681
  
Other countries    
2,480,455
      
2,513,884
  
Net Sales   $
13,599,084
     $
13,445,565
  
Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table Text Block]
    Years ended December 31,
    2019   2018
Customer A   $
5,349,381
     $
6,067,821
  
Customer B    
2,390,911
      
2,049,190
  
All other customers    
7,013,539
      
6,341,044
  
    $
14,753,831
     $
14,458,055