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Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Warrant, USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jun. 30, 2010
Jun. 30, 2009
Warrant
   
Level 3 activity    
Beginning Balance $ 128 $ 67
Interest and other income (expense), net for change in fair value of preferred stock warrants 702 61
Net settlement of preferred stock warrant liability (830)  
Ending balance    $ 128