Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Segment and Geographic Data - Summary by Reporting and Operating Segments (Details)

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Note 10 - Segment and Geographic Data - Summary by Reporting and Operating Segments (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Product sales, net $ 1,915,909 $ 1,805,605  
Operating Income (Loss) (818,181) (2,001,668)  
Depreciation and Amortization 26,045 264,991  
Income (loss) before taxes and equity in earnings of affiliates (779,166) (2,000,704)  
Assets 7,961,631 6,400,968 $ 6,400,968
Corporate, Non-Segment [Member]      
Operating Income (Loss) (818,464) (1,650,451)  
Depreciation and Amortization 19,512 243,973  
Income (loss) before taxes and equity in earnings of affiliates (779,765) (1,651,572)  
Assets 2,618,862 902,816  
Dental Segment [Member]      
Product sales, net 1,915,509 1,769,105  
Dental Segment [Member] | Operating Segments [Member]      
Product sales, net 1,915,509 1,769,105  
Operating Income (Loss) 491,966 357,165  
Depreciation and Amortization 3,936 4,141  
Income (loss) before taxes and equity in earnings of affiliates 492,985 359,822  
Assets 4,977,176 5,169,944  
Medical Segment [Member]      
Product sales, net 400 36,500  
Medical Segment [Member] | Operating Segments [Member]      
Product sales, net 400 36,500  
Operating Income (Loss) (491,683) (708,382)  
Depreciation and Amortization 2,597 16,877  
Income (loss) before taxes and equity in earnings of affiliates (492,386) (708,954)  
Assets $ 365,593 $ 328,208