Quarterly report pursuant to Section 13 or 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 $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Mar. 31, 2012
Total stock-based compensation expense $ 29,000 $ (7,000) $ 67,000 $ 22,000
Research and Development Expense [Member]
       
Total stock-based compensation expense 3,000 2,000 10,000 4,000
General and Administrative Expense [Member]
       
Total stock-based compensation expense $ 26,000 $ (9,000) $ 57,000 $ 18,000