CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net sales	$ 13,163,048	$ 12,287,174	$ 27,032,964	$ 29,168,128
Costs and expenses:
Cost of goods sold	8,298,286	7,060,701	15,470,617	20,401,439
Sales and marketing	3,856,796	3,692,188	7,477,354	7,038,277
General and administrative	2,601,554	2,474,882	4,689,823	5,544,452
Research and development	0	3,143	3,714	2,848
Loss on abandonment of property and equipment	0	0	0	117,930
Total costs and expenses	14,756,636	13,230,914	27,641,508	33,104,946
Loss from operations	(1,593,588)	(943,740)	(608,544)	(3,936,818)
Other income (expense):
Interest expense	(293)	(92)	(541)	(1,737)
Gain on insurance claim settlement	0	0	183,217	0
Loss on foreign currency exchange	(5)	0	0	0
Total other income (expense), net	(298)	(92)	182,676	(1,737)
Loss before income taxes from continuing operations	(1,593,886)	(943,832)	(425,868)	(3,938,555)
Income tax benefit (expense) from continuing operations	318,060	(18,595)	(27,609)	(13,480)
Net loss from continuing operations	(1,275,826)	(962,427)	(453,477)	(3,952,035)
Discontinued operations:
Loss from discontinued operations	0	0	0	(586,124)
Gain on sale of assets from discontinued operations	0	0	0	12,398
Net loss from discontinued operations	0	0	0	(573,726)
Net loss	$ (1,275,826)	$ (962,427)	$ (453,477)	$ (4,525,761)
Net loss per common share:
Basic - continuing operations (in dollars per share)	$ (0.06)	$ (0.05)	$ (0.02)	$ (0.19)
Basic - discontinued operations (in dollars per share)	0	0	0	(0.03)
Basic - total (in dollars per share)	(0.06)	(0.05)	(0.02)	(0.22)
Diluted - continuing operations (in dollars per share)	(0.06)	(0.05)	(0.02)	(0.19)
Diluted - discontinued operations (in dollars per share)	0	0	0	(0.03)
Diluted - total (in dollars per share)	$ (0.06)	$ (0.05)	$ (0.02)	$ (0.22)
Weighted average number of shares used in computing net loss per common share:
Basic (in shares)	21,406,487	21,166,799	21,193,793	20,926,120
Diluted (in shares)	21,406,487	21,166,799	21,193,793	20,926,120