Condensed Statement of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Net sales	$ 8,010,089	$ 8,336,867
Cost of goods sold	5,591,772	5,055,477
Gross profit	2,418,317	3,281,390
Operating expenses:
Selling	2,447,513	2,054,557
General and administrative	567,799	448,078
Research and development	482,403	410,258
Total	3,497,715	2,912,893
Operating income (loss)	(1,079,398)	368,497
Other income (expense):
Interest income	35	104
Interest expense	(32,217)	(6,168)
Other, net	(1,750)	43
Total other income (expense)	(33,932)	(6,021)
Income (loss) before income taxes	(1,113,330)	362,476
Income taxes (benefit)	7,788	3,598
Net income (loss)	$ (1,121,118)	$ 358,878
Net income (loss) per share:
Basic	$ (0.07)	$ 0.02
Diluted	$ (0.07)	$ 0.02
Basic weighted average common and common equivalent shares	16,137,598	15,727,163
Diluted weighted average common and common equivalent shares	16,137,598	16,510,632