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Summary of Significant Accounting Policies (Details) (USD $)
12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2010
Summary of Significant Accounting Policies      
Period considered for classification of cash equivalents 3 months    
Period considered for classification of short term investment, minimum 90 days    
Period considered for classification of short term investment, maximum 1 year    
Level 1 assets measured at fair value on a recurring basis [Abstract]      
Number of stock based compensation plans 3    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Anti-dilutive securities not included in diluted net loss per common share (in shares) 2,644,209 2,619,807 1,230,830
Non-vested stock options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
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
Recurring [Member] | Quoted Prices in Active Markets [Member] | Money market funds [Member]
     
Level 1 assets measured at fair value on a recurring basis [Abstract]      
Cash equivalents 1,059,000