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Statements of Operations (Unaudited) - USD ($)
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Income Statement [Abstract]    
Revenues $ 4,220,686 $ 4,628,592
Cost of revenues 1,996,971 2,228,749
Gross profit 2,223,715 2,399,843
Operating expenses    
Research and development 880,638 893,737
Sales and marketing 767,796 755,914
General and administrative 666,116 703,182
Total operating expenses 2,314,550 2,352,833
Operating income (loss) (90,835) 47,010
Interest expense, net (19,492) (28,501)
Other income 20,000
Net income (loss) before income taxes (90,327) 18,509
Income tax (benefit) expense 6,670
Net income (loss) $ (90,327) $ 11,839
Net income (loss) per share:    
Basic $ (0.01) $ 0.00
Diluted $ (0.01) $ 0.00
Weighted average shares outstanding:    
Basic 6,014,007 5,939,845
Diluted 6,014,007 6,133,849