Note M - Segment and Geographic Data - Summary by Reporting and Operating Segments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Product sales, net	$ 8,374,501	$ 9,622,076
Operating Income (Loss)	(3,998,993)	(7,999,335)
Depreciation and Amortization	100,508	881,285
Income (loss) before taxes and equity in earnings of affiliates	(7,643,438)	(7,999,120)
Dental	6,556,289	6,400,968
Total loss before taxes and equity in earnings of affiliate	6,556,289	6,400,968
Corporate, Non-Segment [Member]
Operating Income (Loss)	(4,424,606)	(6,761,282)
Depreciation and Amortization	76,323	840,319
Income (loss) before taxes and equity in earnings of affiliates	(8,064,576)	(6,658,152)
Dental	957,238	902,816
Total loss before taxes and equity in earnings of affiliate	957,238	902,816
Dental Segment [Member]
Product sales, net	8,336,901	9,502,276
Dental Segment [Member] | Operating Segments [Member]
Product sales, net	8,336,901	9,502,276
Operating Income (Loss)	2,775,716	1,373,178
Depreciation and Amortization	15,793	16,474
Income (loss) before taxes and equity in earnings of affiliates	2,774,332	1,363,662
Dental	5,008,324	5,169,944
Total loss before taxes and equity in earnings of affiliate	5,008,324	5,169,944
Medical Segment [Member]
Product sales, net	37,600	119,800
Medical Segment [Member] | Operating Segments [Member]
Product sales, net	37,600	119,800
Operating Income (Loss)	(2,350,103)	(2,611,231)
Depreciation and Amortization	8,392	24,492
Income (loss) before taxes and equity in earnings of affiliates	(2,353,194)	(2,704,630)
Dental	590,727	328,208
Total loss before taxes and equity in earnings of affiliate	$ 590,727	$ 328,208