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Condensed Statements of Operations (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Income Statement [Abstract]        
Revenues $ 4,391,072 $ 4,435,431 $ 8,186,411 $ 8,700,606
Cost of revenues 2,490,507 2,630,841 4,662,786 5,187,931
Gross profit 1,900,565 1,804,590 3,523,625 3,512,675
Operating expenses:        
Research and development 586,371 594,140 1,140,057 1,118,890
Sales and marketing 526,834 585,088 1,002,780 1,144,287
General and administrative 511,827 448,695 1,032,750 909,757
Total operating expenses 1,625,032 1,627,923 3,175,587 3,172,934
Operating income 275,533 176,667 348,038 339,741
Interest expense and other, net (113,234) (125,173) (249,178) (205,460)
Loss on extinguishment of debt (61,500)    61,500   
Net income before income taxes 100,799 51,494 37,360 134,281
Income tax expense (7,985) (7,985) (15,970) (15,970)
Net income $ 92,814 $ 43,509 $ 21,390 $ 118,311
Net income per share:        
Basic $ 0.02 $ 0.01 $ 0.00 $ 0.02
Diluted $ 0.02 $ 0.01 $ 0.00 $ 0.02
Weighted average shares outstanding:        
Basic 4,915,710 4,864,953 4,906,803 4,863,008
Diluted 5,162,197 4,987,156 4,961,413 4,946,155