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Condensed Statements of Operations (Unaudited) - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Income Statement [Abstract]    
Revenues $ 3,981,055 $ 5,622,093
Cost of revenues 1,916,786 2,709,399
Gross profit 2,064,269 2,912,694
Operating expenses:    
Research and development 946,746 796,608
Sales and marketing 737,856 759,248
General and administrative 664,704 688,804
Total operating expenses 2,349,306 2,244,660
Operating income (loss) (285,037) 668,034
Interest expense, net (19,919) (29,676)
Net income (loss) before income taxes (304,956) 638,358
Income tax expense (benefit) (79,927) 252,551
Net income (loss) $ (225,029) $ 385,807
Net income (loss) per share:    
Basic $ (0.03) $ 0.07
Diluted $ (0.03) $ 0.05
Weighted average shares outstanding:    
Basic 6,744,108 5,912,088
Diluted 6,744,108 7,771,210