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Statements of Operations (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Statement [Abstract]      
Revenues $ 13,564,764 $ 17,510,780 $ 13,498,196
Cost of revenues 8,517,648 10,261,612 8,096,520
Gross profit 5,047,116 7,249,168 5,401,676
Operating expenses:      
Research and development 2,710,754 2,775,058 2,463,268
Sales and marketing 3,372,692 3,606,982 4,106,260
General and administrative 1,972,820 2,142,214 2,546,648
Total operating expenses 8,056,266 8,524,254 9,116,176
Operating loss (3,009,150) (1,275,086) (3,714,500)
Interest expense and other, net (256,992) (1,115,335) (245,822)
Net loss before deferred taxes (3,266,142) (2,390,421) (3,960,322)
Deferred tax expense (31,940) (31,940) (15,515)
Net loss $ (3,298,082) $ (2,422,361) $ (3,975,837)
Net loss per common share:      
Basic and diluted $ (0.68) $ (0.56) $ (1.05)
Weighted average shares outstanding:      
Basic and diluted 4,853,630 4,360,217 3,795,673