Quarterly report pursuant to Section 13 or 15(d)

Stock Option Activity (Detail)

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Stock Option Activity (Detail) (USD $)
3 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Number of Shares    
Outstanding Begining 2,527,389 4,536,949
Granted 3,010,973 0
Exercised 0 (549,552)
Forfeited and cancelled 0 (1,460,009)
Outstanding Ending 5,538,362 2,527,388
Exercisable 3,635,462 1,997,279
Weighted Average Exercise Price    
Outstanding Begining $ 0.15 $ 0.17
Outstanding Ending $ 0.12 $ 0.17
Exercisable $ 0.19 $ 0.17
Weighted Average Remaining Contract Term (in years)    
Outstanding 8 years 2 months 23 days 7 years 4 months 6 days
Exercisable 7 years 5 months 26 days 5 years 6 months 29 days