Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue	$ 9,153,833	$ 9,650,617
Cost of revenue	5,392,919	5,479,482
Gross profit	3,760,914	4,171,135
Operating expenses
Research and development	96,806	70,335
Selling and shipping	513,475	285,416
General and administrative	2,240,065	2,098,156
Total operating expenses	2,850,346	2,453,907
Operating income	910,568	1,717,228
Other income (expense)
Interest income	16,960	8,575
Interest expense	(121,354)	(17,637)
Total other (expense)	(104,394)	(9,062)
Income before income tax (expense)/benefit	806,174	1,708,166
Income tax expense	247,770	684,132
Net income	$ 558,404	$ 1,024,034
Basic income per common share (in dollars per share)	$ 0.09	$ 0.16
Diluted income per common share (in dollars per share)	$ 0.09	$ 0.16
Weighted average common shares outstanding- basic (in shares)	6,467,252	6,353,269
Net effect of potential common share issuance (in shares)	10,447	32,286
Weighted average common shares outstanding- diluted (in shares)	6,477,699	6,385,555