Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Warrant Activity and Related Balances Outstanding (Detail)

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Stockholders' Equity - Warrant Activity and Related Balances Outstanding (Detail)
 12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Number    
Shares purchasable under outstanding warrants at June 30, 2013, re-priced 2,907,347  
Stock purchase warrants issued 19,891,000  
Stock purchase warrants exercised 0  
Shares purchasable under outstanding warrants at June 30, 2014 22,798,347  
Weighted Average Exercise Price Per Share    
Shares purchasable under outstanding warrants at June 30, 2013, re-priced 0.27  
Stock purchase warrants issued 0.20  
Stock purchase warrants exercised 0  
Shares purchasable under outstanding warrants at June 30, 2014 0.21  
Maximum [Member]
    
Remaining Contract Term    
Shares purchasable under outstanding warrants at June 30, 2013, re-priced 4 years 8 months 12 days 3 years 4 months 2 days
Stock purchase warrants issued 4 years 8 months 12 days  
Shares purchasable under outstanding warrants at June 30, 2014 4 years 8 months 12 days 3 years 4 months 2 days
Minimum [Member]
    
Remaining Contract Term    
Shares purchasable under outstanding warrants at June 30, 2013, re-priced 2 years 11 months 12 days 2 years 11 months 16 days
Stock purchase warrants issued 2 years 11 months 12 days  
Shares purchasable under outstanding warrants at June 30, 2014 2 years 11 months 12 days 2 years 11 months 16 days