CONDENSED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Revenues	$ 2,329,681	$ 1,862,684	$ 6,414,084	$ 5,147,103
Cost of sales	582,760	564,653	2,082,986	1,639,650
Gross profit	1,746,921	1,298,031	4,331,098	3,507,453
Operating expenses:
Selling, general and administrative	1,112,318	888,105	3,352,227	3,080,953
Income from operations	634,603	409,926	978,871	426,500
Gain (Loss) on currency exchange	(1,420)	(1,595)	(5,249)	(7,644)
Interest income	11,825	24,718	52,087	83,310
Gain on sale of assets	0	0	0	1,500
Income before taxes	645,008	433,049	1,025,709	503,666
Income tax expense	180,600	161,000	330,600	191,000
Net Income	$ 464,408	$ 272,049	$ 695,109	$ 312,666
Net income per share - basic (in dollars per share)	$ 0.1	$ 0.06	$ 0.16	$ 0.07
Net income per share - diluted (in dollars per share)	$ 0.1	$ 0.06	$ 0.16	$ 0.07
Weighted-average shares outstanding - basic (in shares)	4,468,602	4,511,965	4,474,531	4,511,965
Weighted-average shares outstanding - diluted (in shares)	4,475,982	4,511,965	4,482,148	4,511,965