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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Revenues $ 8,963,261 $ 8,181,193
Cost of sales 107,968 147,131
Gross profit 8,855,293 8,034,062
Operating expenses:    
Sales and marketing 3,749,845 3,801,717
Research and development 2,402,897 2,313,675
General and administrative 3,547,989 1,668,187
Total operating expenses 9,700,731 7,783,579
Operating (loss) income (845,438) 250,483
Other income, net 33,712 44,667
(Loss) income before income taxes (811,726) 295,150
Income taxes   2,783
Net (loss) income $ (811,726) $ 292,367
Net (loss) income per common share:    
Basic (in dollars per share) $ (0.06) $ 0.02
Diluted (in dollars per share) $ (0.06) $ 0.02
Weighted average shares used in the per common share calculation:    
Basic (in shares) 14,317,006 14,866,238
Diluted (in shares) 14,317,006 15,884,335