Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Segment and Geographic Data - Summary by Reporting and Operating Segments (Details)

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Note 11 - Segment and Geographic Data - Summary by Reporting and Operating Segments (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Product sales, net $ 1,246,110 $ 1,899,821 $ 3,225,170 $ 6,073,580  
Operating Income (Loss) (1,476,728) (946,734) (6,258,225) (2,872,749)  
Depreciation and Amortization 16,505 25,418 74,861 76,919  
Income (loss) before taxes and equity in earnings of affiliates (1,477,297) (2,848,667) (6,266,952) (4,725,577)  
Total assets 19,945,621   19,945,621   $ 6,556,289
Corporate, Non-Segment [Member]          
Operating Income (Loss) (855,123) (1,036,541) (3,928,521) (2,927,652)  
Depreciation and Amortization 15,429 19,044 60,653 57,620  
Income (loss) before taxes and equity in earnings of affiliates (853,834) (2,937,140) (3,931,333) (4,777,690)  
Total assets 13,576,619   13,576,619   957,238
Dental Segment [Member]          
Product sales, net 1,240,110 1,884,321 3,209,370 6,042,580  
Dental Segment [Member] | Operating Segments [Member]          
Product sales, net 1,240,110 1,884,321 3,209,370 6,042,580  
Operating Income (Loss) 191,235 644,650 (32,624) 1,766,087  
Depreciation and Amortization 402 3,950 9,202 11,875  
Income (loss) before taxes and equity in earnings of affiliates 190,472 645,442 (35,376) 1,765,475  
Total assets 5,391,842   5,391,842   5,008,324
Medical Segment [Member]          
Product sales, net 6,000 15,500 15,800 31,000  
Medical Segment [Member] | Operating Segments [Member]          
Product sales, net 6,000 15,500 15,800 31,000  
Operating Income (Loss) (812,840) (554,843) (2,297,080) (1,711,184)  
Depreciation and Amortization 674 2,424 5,006 7,424  
Income (loss) before taxes and equity in earnings of affiliates (813,935) $ (556,969) (2,300,243) $ (1,713,362)  
Total assets $ 977,160   $ 977,160   $ 590,727