Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue	$ 5,704,882	$ 4,027,768	$ 14,100,261	$ 19,616,879
Cost of revenue	4,305,059	4,083,752	12,595,340	14,795,731
Gross profit	1,399,823	(55,984)	1,504,921	4,821,148
Operating expenses
Research and development	112,724	240,613	453,724	465,536
Selling and shipping	175,760	331,280	680,183	1,244,004
General and administrative	1,359,910	2,225,593	4,728,021	6,434,123
Total operating expenses	1,648,394	2,797,486	5,861,928	8,143,663
Operating loss	(248,571)	(2,853,470)	(4,357,007)	(3,322,515)
Other income (expense):
Interest income	26,774	40,720	115,643	86,994
Interest expense	(124,449)	(114,692)	(365,255)	(355,325)
Other income	207,237		207,237
Total other income (expense), net	109,562	(73,972)	(42,375)	(268,331)
Loss before income tax	(139,009)	(2,927,442)	(4,399,382)	(3,590,846)
Income tax benefit	(1,000)	(424,640)	(691,697)	(315,922)
Net loss	$ (138,009)	$ (2,502,802)	$ (3,707,685)	$ (3,274,924)
Basic loss per common share (in dollars per share)	$ (0.02)	$ (0.39)	$ (0.57)	$ (0.51)
Diluted loss per common share (in dollars per share)	$ (0.02)	$ (0.39)	$ (0.57)	$ (0.51)
Outstanding-basic (in shares)	6,556,767	6,494,986	6,550,279	6,482,870
Outstanding-diluted (in shares)	6,556,767	6,494,986	6,550,279	6,482,870