Condensed Consolidated Statements of Net Income (Loss) and Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net sales	$ 10,003,239	$ 12,777,782
Costs and expenses:
Cost of products sold	2,349,742	2,835,525
Distributor royalties and commissions	3,391,745	4,498,553
Selling, general and administrative	4,485,895	4,926,279
Total costs and expenses	10,227,382	12,260,357
Income (loss) from operations	(224,143)	517,425
Other income (expense):
Interest income	23,952	25,526
Interest expense	(31,565)	(24,841)
Other income	10,451	32,683
Income (loss) before income taxes	(221,305)	550,793
Provision for income taxes	17,000	27,000
Net income (loss)	(238,305)	523,793
Other comprehensive income (loss):
Foreign currency translation adjustment	25,228	25,472
Comprehensive income (loss)	$ (213,077)	$ 549,265
Earnings (loss) per common share - Basic (in dollars per share)	$ (0.13)	$ 0.28
Weighted average shares (in shares)	1,845,000	1,845,000
Earnings (loss) per common share - Diluted (in dollars per share)	$ (0.13)	$ 0.28
Weighted average shares (in shares)	1,845,000	1,846,000
Product [Member]
Net sales	$ 9,391,381	$ 11,835,116
Shipping and Handling [Member]
Net sales	$ 611,858	$ 942,666