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Summary of Significant Accounting Policies (Details) (USD $)
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12 Months Ended |
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Jun. 30, 2012
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Jun. 30, 2011
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Jun. 30, 2010
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| Summary of Significant Accounting Policies |
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| Period considered for classification of cash equivalents |
3 months |
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| Period considered for classification of short term investment, minimum |
90 days |
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| Period considered for classification of short term investment, maximum |
1 year |
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| Level 1 assets measured at fair value on a recurring basis [Abstract] |
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| Number of stock based compensation plans |
3 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Anti-dilutive securities not included in diluted net loss per common share (in shares) |
2,644,209 |
2,619,807 |
1,230,830 |
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Non-vested stock options [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Expected life |
3 years 10 months 24 days |
3 years 6 months |
3 years 4 months 24 days |
| Risk-free interest rate |
1.20% |
1.30% |
1.60% |
| Expected volatility |
82.00% |
87.00% |
87.00% |
| Dividend yield |
0.00% |
0.00% |
0.00% |
| Weighted average grant date fair value of options granted (in dollars per share) |
1.17 |
1.77 |
1.48 |
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Recurring [Member] | Quoted Prices in Active Markets [Member] | Money market funds [Member]
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| Level 1 assets measured at fair value on a recurring basis [Abstract] |
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| Cash equivalents |
1,059,000 |
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