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Stock-Based Incentive Plan (Details 2) (USD $) | 1 Months Ended |  |  |  | 12 Months Ended
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Dec. 31, 2010 Common stock | Jul. 31, 2010 Common stock | Jun. 30, 2010 Common stock | Jun. 30, 2012 Common stock | Sep. 10, 2010 Common stock | Sep. 08, 2009 Common stock | Jun. 30, 2012 Stock Options and Incentive Warrants | Jun. 30, 2012 Stock Options | Jun. 30, 2011 Stock Options | Jun. 30, 2010 Stock Options
Number of Stock Options and Incentive Warrants |  |  |  |  |  |  |  |  |  |
Stock Options and Incentive Warrants outstanding at the beginning of the period (in shares) |  |  |  |  |  |  | 5,392,820 |  |  |
Exercised (in shares) |  |  |  |  |  |  | (20,000) |  |  |
Stock Options and Incentive Warrants outstanding at the end of the period (in shares) |  |  |  |  |  |  | 5,372,820 |  |  |
Vested or expected to vest at the end of the period (in shares) |  |  |  |  |  |  | 5,372,820 |  |  |
Exercisable at the end of the period (in shares) |  |  |  |  |  |  | 5,353,898 |  |  |
Weighted Average Exercise Price |  |  |  |  |  |  |  |  |  |
Stock Options and Incentive Warrants outstanding at the beginning of the period (in dollars per share) |  |  |  |  |  |  | $ 1.85 |  |  |
Exercised (in dollars per share) |  |  |  |  |  |  | $ 4.10 |  |  |
Stock Options and Incentive Warrants outstanding at the end of the period (in dollars per share) |  |  |  |  |  |  | $ 1.83 |  |  |
Vested or expected to vest at the end of the period (in dollars per share) |  |  |  |  |  |  | $ 1.83 |  |  |
Exercisable at the end of the period (in dollars per share) |  |  |  |  |  |  | $ 1.83 |  |  |
Aggregate Intrinsic Value |  |  |  |  |  |  |  |  |  |
Stock Options and Incentive Warrants outstanding at the end of the period |  |  |  |  |  |  | $ 34,957,022 |  |  |
Vested or expected to vest at the end of the period |  |  |  |  |  |  | 34,957,022 |  |  |
Exercisable at the end of the period (in dollars) |  |  |  |  |  |  | 34,875,456 |  |  |
Weighted Average Remaining Contractual Term (in years) |  |  |  |  |  |  |  |  |  |
Stock Options and Incentive Warrants outstanding at the end of the period |  |  |  |  |  |  | 3 years 4 months 24 days |  |  |
Vested or expected to vest at the end of the period |  |  |  |  |  |  | 3 years 4 months 24 days |  |  |
Exercisable at the end of the period |  |  |  |  |  |  | 3 years 4 months 24 days |  |  |
Additional disclosures of Stock Options and Incentive Warrants |  |  |  |  |  |  |  |  |  |
Market price of common stock on the last trading date of the period (in dollars per share) |  |  |  | $ 8.34 | $ 5.49 | $ 2.68 |  |  |  |
Number of Stock Options exercised (in shares) | 30,000 | 6,875 | 3,000 |  |  |  |  | 20,000 | 86,875 | 3,000
Aggregate intrinsic value of Stock Options exercised |  |  |  |  |  |  |  | $ 54,000 | $ 493,923 | $ 13,620

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- Definition Weighted average remaining contractual term for option and incentive warrants awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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