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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) (USD $) | Total | Convertible Preferred Stock Series A [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Treasury Stock [Member] | Accumulated Deficit [Member]
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2012 | $ 20,007,302 | $ 0 | $ 88,423 | $ 89,627,601 | $ (25,000) | $ (69,683,722)
Balance (in shares) at Dec. 31, 2012 |  | 0 | 88,423,169 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Share-based compensation expense | 4,155,005 | 0 |  | 4,155,005 | 0 | 0
Exercise of stock options | 1,516,580 | 0 | 1,610 | 1,514,970 | 0 | 0
Exercise of stock options (in shares) | 1,610,426 | 0 | 1,610,426 |  |  |
Exercise of warrants | 1,480,124 | 0 | 1,206 | 1,478,918 | 0 | 0
Exercise of warrants (in shares) |  | 0 | 1,205,499 |  |  |
Common stock issued for 5% convertible note | 5,272,004 | 0 | 5,272 | 5,266,732 | 0 | 0
Common stock issued for 5% convertible note (in shares) | 5,272,004 | 0 | 5,272,004 |  |  |
Common stock issued for earn-out liability | 5,792,330 | 0 | 1,175 | 5,791,155 | 0 | 0
Common stock issued for earn-out liability (in shares) | 1,174,915 | 0 | 1,174,915 |  |  |
Net income (loss) | (2,684,915) | 0 | 0 | 0 | 0 | (2,684,915)
Balance at Sep. 30, 2013 | $ 35,538,430 | $ 0 | $ 97,686 | $ 107,834,381 | $ (25,000) | $ (72,368,637)
Balance (in shares) at Sep. 30, 2013 |  | 0 | 97,686,013 |  |  |

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