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Unaudited Condensed Statements of Income - USD ($)
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Income Statement [Abstract]    
Product sales $ 3,543,930 $ 2,986,359
Costs of goods sold 1,391,997 1,228,799
Gross margin 2,151,933 1,757,560
Sales and marketing expenses 514,475 418,998
Administrative expenses 379,633 337,155
Product development expenses 339,616 302,443
Operating expenses 1,233,724 1,058,596
NET OPERATING INCOME 918,209 698,964
Other expenses, net 30,242 23,387
INCOME BEFORE INCOME TAXES 887,967 675,577
Income tax expense 303,725 223,129
NET INCOME $ 584,242 $ 452,448
Weighted average common shares outstanding:    
Basic 4,847,557 3,833,056
Diluted 4,940,293 3,944,350
NET INCOME PER SHARE:    
Basic $ 0.12 $ 0.12
Diluted $ 0.12 $ 0.11