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Note 10 - Segment and Geographic Data (Tables)
6 Months Ended
Jun. 30, 2019
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
Three months ended June 30
   
Six months ended June 30
 
Sales
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Net Sales:
 
2019
   
2018
   
2019
   
2018
 
Dental
  $
2,242,751
    $
2,388,898
    $
4,158,259
    $
4,158,003
 
Medical
   
15,100
     
39,600
     
15,500
     
76,100
 
Total net sales
  $
2,257,851
    $
2,428,498
    $
4,173,759
    $
4,234,103
 
                                 
Operating Income (Loss):
 
2019
   
2018
   
2019
   
2018
 
Dental
  $
629,474
    $
723,084
    $
1,121,440
    $
1,080,249
 
Medical
   
(664,658
)    
(846,164
)    
(1,156,341
)    
(1,554,546
)
Corporate
   
(1,072,647
)    
(1,301,607
)    
(1,891,114
)    
(2,952,043
)
Total operating loss
  $
(1,107,831
)   $
(1,424,687
)   $
(1,926,015
)   $
(3,426,340
)
                                 
Depreciation and Amortization:
 
2019
   
2018
   
2019
   
2018
 
Dental
  $
3,950
    $
4,103
    $
7,886
    $
8,244
 
Medical
   
5,999
     
2,478
     
12,170
     
19,355
 
Corporate
   
15,507
     
238,546
     
31,445
     
482,519
 
Total depreciation and amortization
  $
25,456
    $
245,127
    $
51,501
    $
510,118
 
                                 
Income (loss) before taxes and equity in earnings of affiliates:
 
2019
   
2018
   
2019
   
2018
 
Dental
  $
627,051
    $
725,007
    $
1,120,035
    $
1,084,829
 
Medical
   
(664,007
)    
(846,737
)    
(1,156,393
)    
(1,555,691
)
Corporate
   
(1,060,788
)    
(1,302,787
)    
(1,840,553
)    
(2,954,345
)
Total loss before taxes and equity in earnings of affiliate
  $
(1,097,744
)   $
(1,424,517
)   $
(1,876,911
)   $
(3,425,207
)
Total Assets:
 
June 30, 2019
   
December 31, 2018
 
Dental
  $
5,409,961
    $
5,169,944
 
Medical
   
276,787
     
328,208
 
Corporate
   
1,101,541
     
902,816
 
Total assets
  $
6,788,289
    $
6,400,968
 
Sales by Product and by Geographical Region [Table Text Block]
   
Three months ended June 30,
   
Six months ended June 30,
 
Domestic-US & Canada
 
2019
   
2018
   
2019
   
2018
 
Devices
  $
146,289
    $
11,505
    $
270,285
    $
132,553
 
Handpieces
   
1,030,391
     
1,158,975
     
1,819,544
     
1,927,506
 
Other
   
32,463
     
22,377
     
49,279
     
51,228
 
Total Domestic US & Canada
  $
1,209,143
    $
1,192,857
    $
2,139,108
    $
2,111,287
 
International ROW
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Devices
  $
339,570
    $
367,450
    $
624,915
    $
652,518
 
Handpieces
   
631,129
     
839,194
     
1,262,839
     
1,418,021
 
Other
   
28,009
     
28,997
     
46,897
     
52,277
 
Total International-ROW
  $
998,708
    $
1,235,641
    $
1,934,651
    $
2,122,816
 
International-China
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Devices
  $
-
    $
-
    $
-
    $
-
 
Handpieces
   
50,000
     
-
     
100,000
     
-
 
Other
   
-
     
-
     
-
     
-
 
Total International
  $
50,000
    $
-
    $
100,000
    $
-
 
Domestic. International Analysis
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Domestic-US & Canada
  $
1,209,143
    $
1,192,857
    $
2,139,108
    $
2,111,287
 
International -ROW
   
998,708
     
1,235,641
     
1,934,651
     
2,122,816
 
International -China
   
50,000
     
-
     
100,000
     
-
 
Total Product Sales
  $
2,257,851
    $
2,428,498
    $
4,173,759
    $
4,234,103