Annual report pursuant to Section 13 and 15(d)

Employee Option Grants and Non-employee Option Grants (Detail)

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Employee Option Grants and Non-employee Option Grants (Detail) (USD $)
12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Total stock-based compensation expense $ 94,000 $ 45,000
Research and Development Expense [Member]
   
Total stock-based compensation expense 10,000 8,000
General and Administrative Expense [Member]
   
Total stock-based compensation expense $ 84,000 $ 37,000