Condensed Statement of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net sales	$ 8,336,867	$ 5,145,889
Cost of goods sold	5,055,477	3,411,618
Gross profit	3,281,390	1,734,271
Operating expenses:
Selling	2,054,557	1,846,533
General and administrative	448,078	431,392
Research and development	410,258	507,970
Total	2,912,893	2,785,895
Operating profit (loss)	368,497	(1,051,624)
Other income (expense):
Interest income	104	22
Interest expense	(6,168)	(25,797)
Other, net	43	(11,103)
Total other income (expense)	(6,021)	(36,878)
Income (loss) before income taxes	362,476	(1,088,502)
Income taxes	3,598	0
Net income (loss)	$ 358,878	$ (1,088,502)
Net income (loss) per share: Basic	$ 0.02	$ (0.07)
Net income (loss) per share: Diluted	$ 0.02	$ (0.07)
Weighted average common and common equivalent shares:
Basic	15,727,163	14,781,887
Diluted	16,510,632	14,781,887