Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Segment and Geographic Data - Summary by Reporting and Operating Segments (Details)

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Note 12 - Segment and Geographic Data - Summary by Reporting and Operating Segments (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Product sales, net $ 1,622,246 $ 2,853,813 $ 5,856,351 $ 9,066,550  
Operating Income (Loss) (4,547,580) (1,413,607) (7,973,924) (3,491,917)  
Depreciation and Amortization 344,984 164,868 855,101 231,255  
Income before taxes and equity in earnings of affiliates: (4,547,820) (1,411,071) (7,973,028) (3,488,700)  
Total assets 7,625,221   7,625,221   $ 15,628,787
Corporate, Non-Segment [Member]          
Operating Income (Loss) (3,200,126) (1,607,258) (6,084,685) (4,293,125)  
Depreciation and Amortization 338,565 155,092 821,084 196,632  
Income before taxes and equity in earnings of affiliates: (3,133,819) (1,607,513) (6,088,167) (4,294,346)  
Total assets 860,058   860,058   4,718,130
Dental Segment [Member] | Operating Segments [Member]          
Product sales, net 1,622,246 2,853,813 5,780,251 9,066,550  
Operating Income (Loss) (893,148) 711,589 119,613 2,547,599  
Depreciation and Amortization 3,889 4,261 12,133 13,187  
Income before taxes and equity in earnings of affiliates: (959,095) 714,840 125,734 2,553,437  
Total assets 6,380,314   6,380,314   10,255,144
Medical Segment [Member] | Operating Segments [Member]          
Product sales, net 76,100  
Operating Income (Loss) (454,306) (517,938) (2,008,852) (1,746,391)  
Depreciation and Amortization 2,530 5,515 21,884 21,436  
Income before taxes and equity in earnings of affiliates: (454,906) $ (518,398) (2,010,595) $ (1,747,791)  
Total assets $ 384,849   $ 384,849   $ 655,513