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Note O - Segment and Geographic Data - Summary by Reporting and Operating Segments (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Product sales, net $ 11,281,886 $ 10,482,005
Operating Income (Loss) (5,234,318) (6,513,960)
Depreciation and Amortization
Income before taxes and equity in earnings of affiliates: (5,229,950) (6,517,763)
Total assets 15,628,787 14,181,640
Corporate, Non-Segment [Member]    
Operating Income (Loss) (5,972,743) (5,335,360)
Depreciation and Amortization 573,150 162,925
Income before taxes and equity in earnings of affiliates: (5,975,035) (5,395,918)
Total assets 4,718,130 (2,794,921)
Segment Reconciling Items [Member]    
Depreciation and Amortization 528,895 82,586
Dental Segment [Member]    
Product sales, net 11,279,886 10,460,752
Dental Segment [Member] | Operating Segments [Member]    
Product sales, net 11,279,886 10,460,752
Operating Income (Loss) 3,127,570 2,087,002
Depreciation and Amortization 17,305 17,619
Income before taxes and equity in earnings of affiliates: 3,136,167 2,097,652
Total assets 10,255,144 10,472,879
Medical Segment [Member]    
Product sales, net 2,000 21,253
Medical Segment [Member] | Operating Segments [Member]    
Product sales, net 2,000 21,253
Operating Income (Loss) (2,389,145) (3,265,602)
Depreciation and Amortization 26,950 62,720
Income before taxes and equity in earnings of affiliates: (2,391,082) (3,219,497)
Total assets $ 655,513 $ 913,840