Condensed Consolidated Statements of Net Income (Loss) and Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net Revenues	$ 8,257,013	$ 8,459,741	$ 17,746,517	$ 18,462,980
Costs and expenses:
Cost of goods sold	2,268,992	2,356,274	4,702,723	4,706,016
Distributor royalties and commissions	2,665,093	2,827,357	5,782,665	6,219,102
Selling, general and administrative	3,688,944	4,215,641	7,428,472	8,701,536
Total costs and expenses	8,623,029	9,399,272	17,913,860	19,626,654
Loss from operations	(366,016)	(939,531)	(167,343)	(1,163,674)
Other income (expense):
Interest income	46,218	23,547	95,480	47,499
Interest expense	(10,075)	(45,222)	(15,487)	(76,787)
Other income (expense)	4,768	7,214	(660)	13,865
Gain on sale of fixed assets		(962)	434,549	2,838
Income (loss) before income taxes	(325,105)	(954,954)	346,539	(1,176,259)
Provision for income taxes	63,000	23,000	111,000	40,000
Net income (loss)	(388,105)	(977,954)	235,539	(1,216,259)
Other comprehensive income (loss):
Foreign currency translation adjustment	(10,458)	(78,591)	11,753	(53,363)
Comprehensive income (loss)	$ (398,563)	$ (1,056,545)	$ 247,292	$ (1,269,622)
Basic earnings (loss) per share (in dollars per share)	$ (0.22)	$ (0.53)	$ 0.13	$ (0.66)
Weighted average shares (in shares)	1,746,000	1,845,000	1,746,000	1,845,000
Diluted earnings (loss) per share (in dollars per share)	$ (0.22)	$ (0.53)	$ 0.13	$ (0.66)
Weighted average shares (in shares)	1,746,000	1,845,000	1,746,000	1,845,000
Product [Member]
Net Revenues	$ 7,603,041	$ 7,920,596	$ 16,414,038	$ 17,311,977
Freight Income [Member]
Net Revenues	479,881	539,145	999,822	1,151,003
Product and Service, Other [Member]
Net Revenues	$ 174,091		$ 332,657