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Note O - Segment and Geographic Data (Tables)
12 Months Ended
Dec. 31, 2017
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Sales
 
Years ended
 
Net Sales:
 
2017
   
2016
 
Dental
  $
11,279,886
    $
10,460,752
 
Medical
   
2,000
     
21,253
 
Total
  $
11,281,886
    $
10,482,005
 
                 
Operating Income (Loss):
 
2017
   
2016
 
Dental
  $
3,127,570
    $
2,087,002
 
Medical
   
(
2,389,145
)    
(
3,265,602
)
Corporate
   
(5,972,743
)    
(
5,335,360
)
Total
  $
(
5,234,318
)   $
(
6,513,960
)
                 
Depreciation and Amortization:
 
2017
   
2016
 
Dental
  $
17,305
    $
17,619
 
Medical
   
26,950
     
62,720
 
Other
   
528,895
     
82,586
 
Corporate
  $
573,150
    $
162,925
 
 Total                
                 
Income before taxes and equity in
earnings of affiliates:
 
2017
   
2016
 
Dental
  $
3,136,167
    $
2,097,652
 
Medical
   
(
2,391,082
)    
(
3,219,497
)
Corporate
   
(
5,975,035
)    
(
5,395,918
)
Total
  $
(
5,229,950
)   $
(
6,517,763
)
                 
Total Assets:
 
2017
   
2016
 
Dental
  $
10,255,144
    $
10,472,879
 
Medical
   
655,513
     
913,840
 
Corporate
   
4,718,130
     
(
2,794,921
)
 Total   $
15,628,787
    $
14,181,640
 
Sales by Product and by Geographical Region [Table Text Block]
   
2017
   
2016
 
   
Dental
 
Total Product Sales
 
 
 
 
 
 
 
 
Domestic-US and Canada
  $
5,339,709
    $
3,331,308
 
International -Rest of the World
   
3,869,177
     
3,703,844
 
International -China
   
2,071,000
     
3,425,600
 
Total
  $
11,279,886
    $
10,460,752
 
                 
Total Product Sales
 
Medical
 
Domestic-US and Canada
  $
-
    $
-
 
International - Rest of the World
   
2,000
     
21,253
 
Total
  $
2,000
    $
21,253
 
                 
 
 
Total
 
Domestic-US and Canada
  $
5,339,709
    $
3,352,561
 
International -Rest of the World
   
3,871,177
     
3,703,844
 
International -China
   
2,071,000
     
3,425,600
 
Total
  $
11,281,886
    $
10,482,005