XML 62 R29.htm IDEA: XBRL DOCUMENT v2.4.0.8
Summary of Significant Accounting Policies (Details) (USD $)
12 Months Ended
Jun. 30, 2013
Plan
Jun. 30, 2012
Jun. 30, 2011
Summary of Significant Accounting Policies [Abstract]      
Period considered for classification of cash equivalents 3 months    
Level 1 assets measured at fair value [Abstract]      
Number of stock based compensation plans 4    
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) 2,578,753 2,644,209 2,619,807
Non-vested stock options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected life 4 years 4 years 4 years
Risk-free interest rate (in hundredths) 0.50% 1.20% 1.30%
Expected volatility (in hundredths) 78.00% 82.00% 87.00%
Dividend yield (in hundredths) 0.00% 0.00% 0.00%
Weighted average grant date fair value of options granted (in dollars per share) $ 0.52 $ 1.17 $ 1.77
Level 1 [Member] | Money market funds [Member]
     
Level 1 assets measured at fair value [Abstract]      
Level 1 financial instruments $ 0 $ 1,059,000