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Statements of Income - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Income Statement [Abstract]        
Revenues $ 4,485,253 $ 4,391,072 $ 8,490,997 $ 8,186,411
Cost of revenues 2,370,284 2,490,507 4,568,390 4,662,786
Gross profit 2,114,969 1,900,565 3,922,607 3,523,625
Operating expenses:        
Research and development 550,284 586,371 1,125,335 1,140,057
Sales and marketing 609,308 526,834 1,227,574 1,002,780
General and administrative 466,326 511,827 1,069,552 1,032,750
Total operating expenses 1,625,918 1,625,032 3,422,461 3,175,587
Operating income 489,051 275,533 500,146 348,038
Interest expense and other, net $ (79,999) (113,234) (154,669) (249,178)
Loss on extinguishment of debt   (61,500)   61,500
Net income before income taxes $ 409,052 100,799 345,477 37,360
Income tax expense (7,985) (7,985) (15,970) (15,970)
Net income $ 401,067 $ 92,814 $ 329,507 $ 21,390
Net income per share:        
Basic $ 0.07 $ 0.02 $ 0.06 $ 0.00
Diluted $ 0.07 $ 0.02 $ 0.06 $ 0.00
Weighted average shares outstanding:        
Basic 5,545,270 4,915,710 5,529,429 4,906,803
Diluted 5,911,253 5,162,197 5,960,681 4,961,413