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Statements of Operations - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Income Statement [Abstract]    
Revenues $ 21,285,800 $ 20,787,588
Cost of revenues 9,895,791 10,353,370
Gross profit 11,390,009 10,434,218
Operating expenses:    
Research and development 3,473,610 2,889,168
Sales and marketing 2,952,898 2,774,809
General and administrative 2,545,786 2,207,225
Total operating expenses 8,972,294 7,871,202
Operating income 2,417,715 2,563,016
Interest expense and other, net (79,443) (131,349)
Net income before income taxes 2,338,272 2,431,667
Income tax benefit (expense) 3,768,926 (9,715,422)
Deferred taxes revaluation 2,646,814
Net income (loss) $ (1,430,731) $ 12,147,088
Net income (loss) per share:    
Basic $ (0.23) $ 2.10
Diluted $ (0.23) $ 1.80
Weighted average shares outstanding:    
Basic 6,292,898 5,793,245
Diluted 6,292,898 6,819,821