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Consolidated Statements of Shareholders' Equity (USD $) | Series A Convertible Preferred Stock | Common Stock | Accumulated Deficit | Total
--- | --- | --- | --- | ---
Balance at Jun. 30, 2009 | $ 3,614,554 | $ 194,948,693 | $ (178,590,975) | $ 19,972,272
Balance (in shares) at Jun. 30, 2009 | 510,270 | 15,423,022 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Issuance of common stock at $2.00 per share, less issuance costs of $1,613,425 |  | 12,958,159 |  | 12,958,159
Issuance of common stock at $2.00 per share, less issuance costs of $1,613,425 (in shares) |  | 7,285,792 |  |
Issuance of common stock at $0.90 per share less issuance cost |  | 1,974,014 |  | 1,974,014
Issuance of common stock at $0.90 per share less issuance cost (in shares) |  | 2,753,454 |  |
Issuance of fully-vested shares of common stock to officers and employees and vesting of shares granted under the 2008 Stock Incentive Plan |  | 87,354 |  | 87,354
Issuance of fully-vested shares of common stock to officers and employees and vesting of shares granted under the 2008 Stock Incentive Plan (in shares) |  | 40,000 |  |
Retirement of common stock |  | (9,668) |  | (9,668)
Retirement of common stock (in shares) |  | (5,113) |  |
Retirement of preferred stock | (465,878) |  | (132,586) | (598,464)
Retirement of preferred stock (in shares) | (65,802) |  |  |
Net loss |  |  | (11,571,495) | (11,571,495)
Balance at Jun. 30, 2010 | 3,148,676 | 209,958,552 | (190,295,056) | 22,812,172
Balance (in shares) at Jun. 30, 2010 | 444,468 | 25,497,155 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Issuance of common stock at $0.90 per share less issuance cost |  | 5,671 |  | 5,671
Issuance of common stock at $0.90 per share less issuance cost (in shares) |  | 261,953 |  |
Issuance of common stock to Lincoln Park Capital |  |  |  |
Issuance of common stock to Lincoln Park Capital (in shares) |  | 150,000 |  |
Issuance of common stock at $2.064 per share less the fair value of warrants issued of $1,917,122 and less cash issuance costs of $838,705 |  | 7,976,973 |  | 7,976,973
Issuance of common stock at $2.064 per share less the fair value of warrants issued of $1,917,122 and less cash issuance costs of $838,705 (in shares) |  | 5,200,000 |  |
Exercise of warrants at $2.20 resulting in the issuance of common stock |  | 827,981 |  | 827,981
Exercise of warrants at $2.20 resulting in the issuance of common stock (in shares) |  | 376,355 |  |
Exercise of warrants at $1.13 resulting in the issuance of common stock |  | 562,025 |  | 562,025
Exercise of warrants at $1.13 resulting in the issuance of common stock (in shares) |  | 497,367 |  |
Cashless exercise of warrants resulting in the issuance of common stock |  |  |  |
Cashless exercise of warrants resulting in the issuance of common stock (in shares) |  | 83,472 |  |
Conversion of preferred stock into common stock | (10,620) | 10,620 |  |
Conversion of preferred stock into common stock (in shares) | (1,500) | 15 |  |
Conversion of preferred dividends into common stock |  | 33,000 | (33,000) |
Conversion of preferred dividends into common stock (in shares) |  | 33 |  |
Issuance of fully-vested shares of common stock to officers and employees and vesting of shares granted under the 2008 Stock Incentive Plan |  | 10,208 |  | 10,208
Issuance of fully-vested shares of common stock to officers and employees and vesting of shares granted under the 2008 Stock Incentive Plan (in shares) |  | 20,747 |  |
Issuance of fully-vested shares of common stock to employees and directors and vesting of shares granted under the 2010 Stock Incentive Plan |  | 292,263 |  | 292,263
Issuance of fully-vested shares of common stock to employees and directors and vesting of shares granted under the 2010 Stock Incentive Plan (in shares) |  | 109,918 |  |
Issuance of common stock for settlement of the Long-Term Equity Incentive Program for Fiscal Year 2010 |  | 97,566 |  | 97,566
Issuance of common stock for settlement of the Long-Term Equity Incentive Program for Fiscal Year 2010 (in shares) |  | 86,342 |  |
Retirement of common stock |  | (2,261) |  | (2,261)
Retirement of common stock (in shares) |  | (2,217) |  |
Net loss |  |  | (6,457,067) | (6,457,067)
Balance at Jun. 30, 2011 | 3,138,056 | 219,772,598 | (196,785,123) | 26,125,531
Balance (in shares) at Jun. 30, 2011 | 442,968 | 32,281,140 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |
Exercise of warrants at $2.20 resulting in the issuance of common stock |  | 10,010 |  | 10,010
Exercise of warrants at $2.20 resulting in the issuance of common stock (in shares) |  | 4,550 |  |
Cashless exercise of warrants resulting in the issuance of common stock |  |  |  |
Cashless exercise of warrants resulting in the issuance of common stock (in shares) |  | 990 |  |
Issuance of fully-vested shares of common stock to employees and directors and vesting of shares granted under the 2010 Stock Incentive Plan |  | 248,851 |  | 248,851
Issuance of fully-vested shares of common stock to employees and directors and vesting of shares granted under the 2010 Stock Incentive Plan (in shares) |  | 120,472 |  |
Issuance of fully-vested shares of common stock to employees and directors and vesting of shares under the 2011 Stock Incentive Plan |  | 335,636 |  | 335,636
Issuance of fully-vested shares of common stock to employees and directors and vesting of shares under the 2011 Stock Incentive Plan (in shares) |  | 141,666 |  |
Vesting of shares under the 2012 stock incentive plan |  | 197,613 |  | 197,613
Retirement of common stock |  | (51,381) |  | (51,381)
Retirement of common stock (in shares) |  | (38,749) |  |
Net loss |  |  | (5,211,238) | (5,211,238)
Balance at Jun. 30, 2012 | $ 3,138,056 | $ 220,513,327 | $ (201,996,361) | $ 21,655,022
Balance (in shares) at Jun. 30, 2012 | 442,968 | 32,510,069 |  |

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